For the 6th year in a row, Igalia has organized a hackfest focused on web engines. The 5 years before this one were actually focused on the GTK+ port of WebKit, but the number of web engines that matter to us as Free Software developers and consultancies has grown, and so has the scope of the hackfest. It was a very productive and exciting event. It has already been covered by Manuel Rego, Philippe Normand, Sebastian Dr ge and Andy Wingo! I am sure more blog posts will pop up. We had Martin Robinson telling us about the new Servo engine that Mozilla has been developing as a proof of concept for both Rust as a language for building big, complex products and for doing layout in parallel. Andy gave us a very good summary of where JS engines are in terms of performance and features. We had talks about CSS grid layouts, TyGL a GL-powered implementation of the 2D painting backend in WebKit, the new Wayland port, announced by Zan Dobersek, and a lot more. With help from my colleague ChangSeok OH, I presented a description of how a team at Collabora led by Marco Barisione made the combination of WebKitGTK+ and GNOME s web browser a pretty good experience for the Raspberry Pi. It took a not so small amount of both pragmatic limitations and hacks to get to a multi-tab browser that can play youtube videos and be quite responsive, but we were very happy with how well WebKitGTK+ worked as a base for that. One of my main goals for the hackfest was to help drive features that were lingering in the bug tracker for WebKitGTK+. I picked up a patch that had gone through a number of iterations and rewrites: the HTML5 notifications support, and with help from Carlos Garcia, managed to finish it and land it at the last day of the hackfest! It provides new signals that can be used to authorize notifications, show and close them. To make notifications work in the best case scenario, the only thing that the API user needs to do is handle the permission request, since we provide a default implementation for the show and close signals that uses libnotify if it is available when building WebKitGTK+. Originally our intention was to use GNotification for the default implementation of those signals in WebKitGTK+, but it turned out to be a pain to use for our purposes. GNotification is tied to GApplication. This allows for some interesting features, like notifications being persistent and able to reactivate the application, but those make no sense in our current use case, although that may change once service workers become a thing. It can also be a bit problematic given we are a library and thus have no GApplication of our own. That was easily overcome by using the default GApplication of the process for notifications, though. The show stopper for us using GNotification was the way GNOME Shell currently deals with notifications sent using this mechanism. It will look for a .desktop file named after the application ID used to initialize the GApplication instance and reject the notification if it cannot find that. Besides making this a pain to test our test browser would need a .desktop file to be installed, that would not work for our main API user! The application ID used for all Web instances is org.gnome.Epiphany at the moment, and that is not the same as any of the desktop files used either by the main browser or by the web apps created with it. For the future we will probably move Epiphany towards this new era, and all users of the WebKitGTK+ API as well, but the strictness of GNOME Shell would hurt the usefulness of our default implementation right now, so we decided to stick to libnotify for the time being. Other than that, I managed to review a bunch of patches during the hackfest, and took part in many interesting discussions regarding the next steps for GNOME Web and the GTK+ and Wayland ports of WebKit, such as the potential introduction of a threaded compositor, which is pretty exciting. We also tried to have Bastien Nocera as a guest participant for one of our sessions, but it turns out that requires more than a notebook on top of a bench hooked up to a TV to work well. We could think of something next time ;D. I d like to thank Igalia for organizing and sponsoring the event, Collabora for sponsoring and sending ChangSeok and myself over to Spain from far away Brazil and South Korea, and Adobe for also sponsoring the event! Hope to see you all next year!

Dave Johnson wrote an interesting article for Salon about companies ripping off the tax system by claiming that all their income is produced in low tax countries [1]. Seb Lee-Delisle wrote an insightful article about how to ask to get paid to speak [2]. I should do that. Daniel Pocock wrote an informative article about the reConServer simple SIP conferencing server [3]. I should try it out, currently most people I want to conference with are using Google Hangouts, but getting away from Google is a good thing. Fran ois Marier wrote an informative post about hardening ssh servers [4]. S. E. Smith wrote an interesting article I Am Tired of Hearing Programmers Defend Gender Essentialism [5]. Bert Archer wrote an insightful article about lazy tourism [6]. His initial example of love locks breaking bridges was a bit silly (it s not difficult to cut locks off a bridge) but his general point about lazy/stupid tourism is good. Daniel Pocock wrote an insightful post about new developments in taxis, the London Taxi protest against Uber, and related changes [7]. His post convinced me that Uber is a good thing and should be supported. I checked the prices and unfortunately Uber is more expensive than normal taxis for my most common journey. Cory Doctorow wrote an insightful article for The Guardian about the moral issues related to government spying [8]. The Verge has an interesting review of the latest Lytro Lightbox camera [9]. Not nearly ready for me to use, but interesting technology. Prospect has an informative article by Kathryn Joyce about the Protestant child sex abuse scandal in the US [10]. Billy Graham s grandson is leading the work to reform churches so that they protect children instead of pedophiles. Prospect also has an article by Kathryn Joyce about Christians home-schooling kids to try and program them to be zealots and how that hurts kids [11]. The Daily Beast has an interesting article about the way that the extreme right wing in the US are trying to kill people, it s the right wing death panel [12]. Jay Michaelson wrote an informative article for The Daily Beast about right-wing hate groups in the US who promote the extreme homophobic legislation in Russia and other countries [13]. It also connects to the Koch brothers who seem to be associated with most evil. Elias Isquith wrote an insightful article for Salon about the current right-wing obsession with making homophobic discrimination an issue of religious liberty will hurt religious people [14]. He also describes how stupid the right-wing extremists are in relation to other issues too. EconomixComix.com has a really great comic explaning the economics of Social Security in the US [15]. They also have a comic explaining the TPP which is really good [16]. They sell a comic book about economics which I m sure is worth buying. We need to have comics explaining all technical topics, it s a good way of conveying concepts. When I was in primary school my parents gave me comic books covering nuclear physics and other science topics which were really good. Mia McKenzie wrote an insightful article for BlackGirlDangerous.com about dealing with racist white teachers [17]. I think that it would be ideal to have a school dedicated to each minority group with teachers from that group.

• [1] http://tinyurl.com/m8syp4q
• [2] http://seb.ly/2014/05/how-to-ask-to-get-paid-to-speak/
• [3] http://danielpocock.com/reConServer-for-easy-sip-conferencing
• [4] http://feeding.cloud.geek.nz/posts/hardening-ssh-servers/
• [5] http://tinyurl.com/lj3s6ne
• [6] http://tinyurl.com/l9w84pf
• [7] http://danielpocock.com/protest-or-uber-marketing-stunt
• [8] http://tinyurl.com/lrob483
• [9] http://www.theverge.com/2014/7/30/5949913/lytro-illum-review
• [10] http://prospect.org/article/next-christian-sex-abuse-scandal
• [11] http://prospect.org/article/homeschool-apostates
• [12] http://tinyurl.com/m653fda
• [13] http://tinyurl.com/pb2a2bd
• [14] http://tinyurl.com/nz8a99t
• [15] http://economixcomix.com/home/social-security/
• [16] http://economixcomix.com/home/tpp/
• [17] http://tinyurl.com/pkcgkwd

Twenty years ago, I was sixteen and in high school. The school at the time, if memory serves right, was the "Kunsthumaniora voor muziek en woord van het gemeenschapsonderwijs" in Brussels (which translates approximately to "art high school for music and word of the communal educational branch"... that's not entirely right, but it's late and I'm too tired to look for a dictionary). I was taking drama classes there. No, I'm not making this up. Except maybe the sixteen bit I might be off by one or two years. Hey, I did a lot of things during high school. Stop looking at me like that. At one point in time during my stint in drama, a group of educational interns the sort of people who would be teaching some sort of stuff somewhere after their graduation cooperated with our school to come up with a whole day of classes around one subject. I'll never forget the title: "Can art rescue the democracy?" If that sounds pompous and silly, that's because it was. However, I was at art school, fer crying out loud, so I drank it up like it was cool-aid. Which it wasn't. It was worse. At the end of the day (literally, that is), the educational interns had booked some hot shot art person for a debate. I've since completely forgotten his name. He must've been not that hot shot after all, since I never even once read anything about him in the next few years. Of course I can't exclude the most recent decade, not remembering him and all, but whatever. I also don't remember whether he was a hot shot art critic, a hot shot artist, or just some random hot shot person who writes about art, but doesn't actually do it himself. Whatever. One of the main topics during the whole day was the point about how artsy people find it extremely difficult to define what art actually is. I mean, it's all they do all day, but they can't come up with a decent definition of the damn thing. During the afternoon break, just before the debate with this maybe-sortof-semi hot shot art person, I walk around the playground and think about the whole thing. And come up with some personal definition of art. My definition. As the time of the debate comes up, the hot shot art person sits in the front of the gym behind some table, and the whole school (literally) is sitting in chairs in the rest of the gym. Some questions are asked. Many of those are just shot down. At some point, I raise my finger when it's asked if anyone has further questions. I walk up to the microphone. I ask him: "Could we maybe define art as that thing that, though it might be easy to reproduce, in no case is easy to produce?" He sits (he never got up, really). He thinks. I stand, and wait. After a few seconds of this, he answers. He seems impressed. His reply is something along the lines of "that's not a perfect definition, but it's pretty good. There's a lot to be said for that, and I urge you to write about art when you grow older". I never followed his advice. I got a bit more interested in art, but quickly found out that art consists of one group of people who spend their time doing things other people find pretty, and another group of people who spend their time doing things that makes other people "think", whatever that is. They may not have a brain, they may be silly as hell, but they still want to "think". It's not for me, it's never been. Art, that is -- not the think bit. That is something I don't mind doing. Don't get me wrong. I still like art. I like going to museums from time to time; I like the performing arts. I mean, I play the flute. Not the piano, not the guitar, not the flipping drums, the flute. Which I like, for what it's worth. But if the intent is to make people think, there are better ways to do that. If I want to make people think, I'm not going to make some obscure object that may or may not have a message, in the hope that a millionaire with no better use for his money would buy it just to make his friends jealous, after which he's going to put it in a safe for a few years so he can sell it at a higher value. Without thinking about it. If I want to make people think, I'm not going to write a play or piece of music that's so obscure it will make people all confused, so they can fill their evening afterwards drinking cocktails at a reception, claiming it was all nice and thought-provoking, quoting little parts of it to people they've never met, just so they can make their social status look more than it actually is. Good thing I never finished drama school, I suppose. No, if I want to make people think, I'll try doing so where it actually matters. Like, say, in politics. Not that I have any political ambitions, mind you. But I think the answer to that question of twenty years ago should be a firm "no." Art cannot rescue democracy. Not if they don't have a lot of interesting things to say to anyone but themselves. Maybe the reverse is true, though; maybe democracy can rescue art. Not that I care much. Why is all this relevant today? A few days ago, as I was driving somewhere, there was some show on the radio relating to the current exploits of the Belgian national soccer team. There are a lot of them these days. Radio shows about that subject, that is not Belgian national soccer teams. I suppose having a lot of competition makes it hard to find a new angle to come up with, and still keep things interesting. I also suppose having a lot of stuff going on about that squad gets people annoyed if they're not the least bit interested. I suppose that could be a new angle. Presumably that radio host supposed the same, because he'd been looking for, and asking questions of, people who didn't like soccer and who weren't going to watch the match. Most of them said they weren't interested and added one or two words about what they were going to be doing instead. One of them said that "they" would be better off spending money on "art and culture", rather than on soccer. No, I don't know who "they" were, he didn't say. Never mind that, let me go on now. I don't know who this dude was; they the radio people didn't say. He sounded like someone between 50 and 65, and had a somewhat tenor-y voice. I suspect he had two kids, and a mercedes. Yes, I just made that up. The part about the kids. And the car. No, it doesn't matter. But it's still likely. He sounded like that sort of guy. Whoever this dude was, though, I'd like to just say one thing: Dude, you're an idiot. There's a time and a place for everything. The time and place for art is "everywhen", and "in any random art gallery, opera house, or theatre, out of the public eye". Not because the rest of us doesn't want to deal with art, but because artsy people like it that way. They like to feel all pompous and important, and therefore use difficult words. Words that nobody except those along with them in their ivory tower like to use. Words that don't actually mean anything. But in doing so, they make this Art thing uninteresting to look at for people who don't care about their pompous and silly words. And strengthen the walls of their ivory tower. Only to complain later on that nobody ever shows up at art galleries, and that the really good ones keep going out of business. The time and place for the world championship soccer is "once every four years", and "everywhere". Not because soccer people want to annoy you although, yes, I'll grant you that the KBVB has gone a little overboard with the merchandising this time around but rather because it's so simple. You kick the ball, and you hit the goal. There, done. Everyone can do it. Yes, true, there are some pompous people talking about it on TV, too. And yes, true, some people are better at it than others. But nobody claims you can't do soccer unless you're part of the "in" club. There are plenty of people who claim you can't do art unless you are. And if everyone can do it, then everyone can understand it. If you can understand it, it's easier to enjoy it. This is why so few people enjoy cricket or baseball outside of the few countries where it's popular. That's also why so few people enjoy art: because you make it so difficult. And people just don't care. They want to be entertained. I'm not saying that soccer is the best sport in the world, or that watching it is the most entertaining thing one can do. It isn't. In fact, beyond the national team, I'm not really following it all that well myself. If through some weird spacial anomaly the world championship would suddenly cease to exist and I would be the only person alive remembering it, I don't think I'd spend a lot of time trying to get it back. But don't compare it to art. Because, well, in the grand scheme of things, neither of those two really matters all that much. That is all.

I ve done some clean-up in the Debian BTS. The result can be seen in the QA graphs: The last remaining 6 bugs are only affecting OpenStack Essex (which is what Wheezy ships, and which unfortunately I have not enough time to support properly), and the last one is waiting for FTP masters approval after I added Python 3 support to oslo-config (OpenStack is slowly moving to Python3, and I ve tried to add support to Python3 in the packages as well each time it was possible). Also, the Icehouse packages have passed the tempest tests (a set of functional tests) which we run in our continuous integration system. As I was doing some triaging, it is possible that some bugs have been closed a bit quickly (like for example the Ceilometer FTBFS which I couldn t reproduce, even with sbuild and cowbuilder), so it is well possible that some more QA work will be needed later on. I m also expecting a new set of patches for supporting Ceph in Nova. I m sure there s issues which we will discover later on, however, it is nice to have this result right after the first Icehouse release of OpenStack. Next up: testing new components that I uploaded for this release: Trove (DB as a Service), Designate (DNS as a Service), Ironic (Metal as a Service, or cloud computing on bare-metal), and TripleO (OpenStack on OpenStack). I unfortunately know already that TripleO and Tuskar wont really work yet, and that it needs some patches to be sent upstream for it to support Debian correctly (let s work it out for Juno!). So please consider it as a technology preview only. Though Trove, Designate and Ironic are supposed to be in good enough shape, I didn t have the chance to test them more than just installing the packages and checking daemons are running and connected to the various components of OpenStack (eg: database, keystone and RabbitMQ). Please do test them and report bugs in the BTS. I d like to thanks Gustavo Panizzo & Thomas Bechtold who contributed to this release, and also the folks at eNovance (Emilien, Cyril, Seb ) who provided precious help with the CI and package quality. See you in the Juno Atlanta design summit next week (as hopefully, my plane ticket issue will be soon solved).

To "pedestal" an aerobar means to elevate the bars above the basebar using risers instead of using headset spacers: You might do this for a few reasons:

• The rider is in a more aerodynamic position when cornering or descending on the basebars.
• Lowers the rider's centre of gravity, improving cornering confidence.
• Less flex when climbing or accelerating under high wattage.
• Teardrop-shaped risers are more aerodynamic than a cylindrical steerer tube:

So, assuming you currently have a bike that uses headset spacers, what would be the effect on your position if you were to replace, say, a 10mm headset spacer with a 10mm armrest riser? First, let us consider the effect of removing the headset spacer. The crucial insight is that removing a 10mm spacer will not lower the stack height ie. the vertical distance relative to the bottom bracket by 10mm. This is because spacers are not oriented perpendicular to the ground; they are stacked along the steerer tube at the head tube angle of the frame. We will assume a head tube angle of 72.5 degrees. We can calculate that removing a 10mm spacer will reduce the stack height by:

sin(72.5 )   10mm = 9.54mm

... and by the same argument it will also increase the effective reach ie. the horizontal distance relative to the bottom bracket by:

cos(72.5 )   10mm = 3.01mm

Next, let us consider the impact of adding the riser. These are oriented perpendicular to the ground, so its addition makes no further change to the reach. However, we can now calculate the overall change in stack height:

  stack = -(sin(72.5 )   10mm) + 10mm = 0.46mm

We can then repeat the calculation for any length of replacement:

Replacement (mm)	stack (mm)	reach (mm)
10	+0.46	+3.01
20	+0.93	+6.01
30	+1.39	+9.02
40	+1.85	+12.0
50	+2.31	+15.0
60	+2.78	+18.0

From this table, I can discover that if I were to replace 30mm of headset spacers with 30mm of risers it would:

1. Increase my effective stack height by 1.39mm (likely neglible).
2. Increase my reach by 9.02mm. This might require me to use a shorter stem to get the same position. If that was undesirable for example, if was already using an extremely short stem I might be forced to abandon the idea altogether.

Three further considerations must be noted:

1. The resultant low height of the base bar could be quite drastic and prevent you breathing properly whilst climbing.
2. Having the steerer tube cut down after to removing headset spacers will reduce the resale value of your bike.
3. You might need to re-cable your brakes as you may have changed the distance the cables must span.

(It may seem odd to provide results for up to 60mm of headset spacers when such a large number of spacers would at the very least void one's warranty. However, I suspect such setups are transiently common within the confines of a fitting studio.)

I spent last week looking into the firmware configuration protocol used on current IBM system X servers. IBM provide a tool called ASU for configuring firmware settings, either in-band (ie, running on the machine you want to reconfigure) or out of band (ie, running on a remote computer and communicating with the baseboard management controller - IMM in IBM-speak). I'm not a fan of using vendor binaries for this kind of thing. They tend to be large (ASU is a 20MB executable) and difficult to script, so I'm gradually reimplementing them in Python. Doing that was fairly straightforward for Dell and Cisco, both of whom document their configuration protocol. IBM, on the other hand, don't. My first plan was to just look at the wire protocol, but it turns out that it's using IPMI 2.0 to communicate and that means that the traffic is encrypted. So, obviously, time to spend a while in gdb.

The most important lesson I learned last time I did this was "Check whether the vendor tool has a debug option". ASU didn't mention one in its help text and there was no sign of a getopt string, so this took a little longer - but nm helpfully showed a function called DebugLog and setting a breakpoint on that in gdb showed it being called a bunch of the time, so woo. Stepping through the function revealed that it was checking the value of a variable, and looking for other references to that variable in objdump revealed a -l argument. Setting that to 255 gave me rather a lot of output. Nearby was a reference to --showsptraffic, and passing that as well gave me output like:

BMC Sent: 2e 90 4d 4f 00 06 63 6f 6e 66 69 67 2e 65 66 69
BMC Recv: 00 4d 4f 00 21 9e 00 00

which was extremely promising. 2e is IPMI-speak for an OEM specific command, which seemed pretty plausible. 4d 4f 00 is 20301 in decimal, which is the IANA enterprise number for IBM's system X division (this is required by the IPMI spec, it wasn't an inspired piece of deduction on my behalf). 63 6f 6e 66 69 67 2e 65 66 69 is ASCII for config.xml. That left 90 and 06 to figure out. 90 appeared in all of the traces, so it appears to be the command to indicate that the remaining data is destined for the IMM. The prior debug output indicated that we were in the QuerySize function, so 06 presumably means query the size. And this is supported by the response - 00 (a status code), 4d 4f 00 (the IANA enterprise number again, to indicate that the responding device is speaking the same protocol as you) and 21 9e 00 00 - or, in rational endianness, 40481, an entirely plausible size.

Once I'd got that far the rest started falling into place fairly quickly. 01 rather than 06 indicated a file open request, returning a four byte file handle of some description. 02 was read, 03 was write and 05 was close. Hacking this together with pyghmi meant I could open a file and read it. Success!

Well, kind of. I was getting back a large blob of binary. The debug trace showed calls to an EfiDecompress function, so on a whim I tried just decompressing it using the standard UEFI compression format. Shockingly, it worked and now I had a 345K XML blob and presumably many more problems than I'd previously had. Parsing the XML was fairly straightforward, and now I could retrieve the full set of config options, along with the default, current and possible values for them.

Making changes was pretty much just the reverse of this. A small XML blob containing the new values is compressed and written to asu_update.efi. One of the elements is a random identifier, which will then appear in another file called config_log along with a status. Just keep re-reading this until the value changes to CM_DONE and we're good.

The in-band configuration appears to be identical, but rather than sending commands over the wire they're send through the system's IPMI controller directly. Yes, this does mean that it's sending compressed XML through a single io port. Yes, I'd rather be drinking.

I've documented the protocol here and hope to be able to release this code before too long - right now I'm trying to nail down the interface a little, but it's broadly working.

comments

I have always loved Drum and Bass. In 2013 I rediscovered my love for Darkstep and Neurofunk, and found that these genres have developed quite a lot in the recent years. Some labels like Black Sun Empire and Evol Intent produce mixes/sets on a regular basis as podcasts these days. This article aggregates some neurofunk podcasts I like a lot, most recent first. Enjoy 33 hours and 57 minutes of fun with dark and energizing beats. Thanks to BSE Contrax and Evol Intent for providing such high quality sets.

• Evolcast Episode 002 hosted by Gigantor (00:56:25) This is the second Evolcast episode, hosted by Gigantor. Featuring a mix spanning various genres.
  
  01 - The Sickness - SPL
  02 - Catch 22 - Misanthrop
  03 - Neo - Audio Remix - Hive
  04 - Can U Feel It VIP - Drumsound and Bassline Smith
  05 - Head Shrinker - NC-17 and Nusense
  06 - Lights - The Prototypes
  07 - Dibby Dibby Sound - Sigma Remix - Jay Fay and DJ Fresh feat. Ms. Dynamite
  08 - Operation Ivy - June Miller
  09 - Fire - Craze and Tropkillaz
  10 - The Illest - Rell The Soundbender Remix - Far East Movement feat. Riff Raff
  11 - Power Move - Evol Intent Reflip - Jackal
  12 - Kronos - Smooth and Markoman
  13 - Acid Howl - Rampage Anthem - Murdock and Doctrine
  14 - No Operative - State Of Mind
  15 - Jim Skynner - Evol Intent and Eye-D
  16 - Cata - Savoy and LoBounce
  17 - Chumps - The Al Gore Rhythm Method
  18 - Hideous - Haywyre Remix - Black Sun Empire and Noisia
  19 - Patty Cake - Bro Safari and Jesse Slayter
  20 - Temptation - Neosignal
  21 - KNAS Dillon Francis Remix - Steve Angello
  22 - Pay Me v4 - MUST DIE! and Mantis
  23 - Mistrust - Teddy Killerz and Aeph
  24 - Punish Me In The Middle Of The Night VIP - Evol Intent vs. Dom and Roland
  25 - Nightfall - Stealth feat. Codebreaker
  26 - Additional Faces - Computer Club Reflip - The M Machine
  27 - Undertaker - The Upbeats
  28 - Before The Sun - Doco
  29 - Click Clack - Buku
  30 - Fuk Yo Scene v5.9.i - Evol Intent
  31 - The Dealer - Evol Intent Remix - FINAL - Bro Safari and UFO!
  32 - Flare - Des McMahon Remix - Carver and Clock
  33 - Coffins - Pegboard Nerds feat. Misterwives
  34 - The Ladies - Throwback Mix - Evol Intent
  35 - Experts - The Prototypes Remix - SKiSM
  36 - We Are Not Alone - Evol Intent and Gridlok
  37 - Tsunami Jump - Friction Remix - Borgeous feat. Tinie Tempah
  38 - This Is Not A Dream v8c - Evol Intent
  
• Timeless Shock Podcast 008 (01:05:43) Contrax
  check our Homepage: http://contrax-dnb.com
  
  check our twitter: https://twitter.com/Contrax_DnB
  
  check our facebook: http://www.facebook.com/ContraxEyepax
  
  check our soundcloud: https://soundcloud.com/contraxmusik
  https://soundcloud.com/dnb_contrax
  Tracklist Contrax:
  coming soon
  
  BlacKShark
  check Homepage: http://www.fsw-cru.de/
  
  check facebook: https://www.facebook.com/DJBlacKSharKFSW
  Tracklist BlacKShark:
  01 Calvin Clark-Oblivion
  02 Olly F-Special Bulletin
  03 Bassline Terrorist-Death Rattle (Majistrate RMX)
  04 Eski B-I am the Danger
  05 Misanthrop-Greed of Gain
  06 Lockjaw-Flatline
  07 Deadmau5-Ghosts 'N' Stuff ((Sub Focus RMX) The Ripper Master Edit)
  08 Loadstar-Give It To Me (DC Breaks RMX)
  09 Rammstein-Spring (BlacKSharK DnB Bootleg)
  10 Misanthrop-Deadlock
  11 Cyantific-Ice Cream
  12 Dj Emotion-No Fear
  13 Draven-Venom
  14 Serial Killaz-Killa Klash Annix Remix-Serial Killaz
  15 Deichkind-bon voyage (BlacKSharK DnB Bootleg)
  16 Dangerous-Work Boots VIP
  17 Kenesis feat. Talabun-Get Darker
  18 Nico Suave-Vergesslich (BlacKSharK DnB Bootleg)
• Timeless Shock Podcast 007 (00:47:54) Contrax
  check our Homepage: http://contrax-dnb.com
  
  check our twitter: https://twitter.com/Contrax_DnB
  
  check our facebook: http://www.facebook.com/ContraxEyepax
  
  check our soundcloud: https://soundcloud.com/contraxmusik
  https://soundcloud.com/dnb_contrax
  Tracklist:
  01 Unknown Error - The Yearning (Apex VIP)
  02 Seba - Under The Sun
  03 Brother - Still Blue (Command Strange & Intelligent Manners RMX)
  04 Submatik - Sunset feat. Greg Cooke
  05 R-Monix - You Bring Nothing
  06 Technimatic - Sheltered Storm
  07 Contrax - The End Of Time
  08 Midnight Request - Come Home
  09 Jaydan - Shes Heaven
  10 Erick Trodly & Impish - Be Around
  11 Martin Solveig - The Night Out (Hosta RMX)
  12 Paramount - Electric Blue
  13 Tenorio Junior - Nebulosa (Nu:Tone RMX)
  14 Spillage - Systematic
  15 Bank - Magic Hour
  16 Chase & Status feat. Liam Bailey - Blind Faith (Loadstar RMX)
  17 Virtue feat. Bonnie Rabson - Hello Insomnia
  18 Korus - Humming Bird
  19 Whiney - Wasting Time
  20 Sound Tactix - Understand
  21 Keeno - Little Son (VIP RMX)
  22 Mars & Gala - Just One Night
• BSE - Podcast 028 - Guestmix by Maztek (01:32:38) First Podcast of 2014, This time a brand new 1,5 hour exclusive mix by Maztek!
• Evolcast Episode 001 Gigantor Live at Beta Nightclub (00:54:53) This is the inaugural episode of the Evol intent podcast. Starting things off with Gigantor's set from 22 November, 2013 in Denver at Beta Nightclub.
• BSE - Podcast 027 - Variations on Black (01:04:15) Brand new 45 min mix to celebrate the release of our new album 'Variations on Black',this time mixed by Black Sun Empire!
• Timeless Shock Podcast 006 (01:07:40) Contrax
  check our Homepage: http://contrax-dnb.com
  
  check our twitter: https://twitter.com/Contrax_DnB
  
  check our facebook: http://www.facebook.com/ContraxEyepax
  
  check our soundcloud: https://soundcloud.com/contraxmusik
  https://soundcloud.com/dnb_contrax
  Tracklist Contrax:
  1.Future Primitive - Kryptic
  2.Amalgan - Space Hornet
  3.Contrax - ??? (unfinished track)
  4.Apolloud - Transmission
  5.Computerartist - Orbit
  6.Encode & Valrus - Face 2 Face
  7.Fourward - Robot (insideinfo remix)
  8.Receptor & Freqax - First Step
  9.June Miller - From autumn to Ashes
  10.Semantics & Kalu - 2025
  11.Quadrant & Cease - Built for War
  12.Rusty K - Kali
  13.The Prototypes - Blackout (feat Mc ID)
  14.Black Sun Empire & Eye D - Milkshake
  15.Optiv & BTK - Bad Attitude
  16.Rawtekk - Monopolists & Robberies
  17.State of MInd - Max Headroom
  18.Telekinesis - Diabolo
  
  Blind:Sight
  check Soundcloud: https://soundcloud.com/blind-sight
  
  check facebook: https://www.facebook.com/DJBlindSight
  Tracklist BlindSight:
  1) Manufactured Superstars feat. Selina Albright - SERIOUS (Ed Rush RMX)
  2) MSTRKRFT - PARIS (Upbeats RMX)
  3) EWUN - SCREW UP
  4) State of Mind - DESTINESIA
  5) AMC & T Phonic -WHERE U OUT
  6) Friction & K Tee - SET IT OFF (Icicle RMX)
  7) BTK & Mindscape - Bandits
  8) Suspicious Stench feat. FLOWDAN - SHUTDOWN (LoKo RMX)
  9) Dextems - QUARK (Absurd RMX)
  10) Twisted Facts & Brain Crisis feat MC DON - MURK
  11) BTK feat. Sam Wills - TRY
  12) D Iolax - KILLING THE FUTURE
  13) BTK - DROP IT (Optiv RMX)
  14) Engage & Forbidden Society - RIGID CRASH
  15) Bad Company - BULLET TIME (SPOR RMX)
• BSE - Podcast 026 - Guestmix by Neonlight (00:45:08) Brand new hour long mix for drum'n'bass this time mixed by Neonlight!
• Timeless Shock Podcast 005 (01:00:08) Contrax
  check our Homepage: http://contrax-dnb.com
  
  check our twitter: https://twitter.com/Contrax_DnB
  
  check our facebook: http://www.facebook.com/ContraxEyepax
  
  check our soundcloud: https://soundcloud.com/contraxmusik
  https://soundcloud.com/dnb_contrax
  Tracklist Contrax:
  01.Danny Howells - September (Furney Remix)
  02.Calibre - Broken
  03.BCee feat Lingby - Count The Stars (Joe Syntax Remix)
  04.BCee feat Lingby - Count The Stars (Hybrid Minds Remix)
  05.Command Strange - Do Me Right
  06.Eveson feat Jo-S - Time Flows By
  07.Hibea - The Form (Phil Tangent Remix)
  08.Lenzman - Empty Promise
  09.LSB - The Hurting
  10.London Elektricity - Just One Second (Apex Remix)
  11.Lomax, Eveson - Under The Bridge
  12.Pedestrian - Hoyle Road (SpectraSoul Remix)
  13.S.P.Y - One Last Quest
  14.Technimatic - The Unspoken
  15.Utah Jazz - Burn Out
  16.Colossus - Under The Weather
  
  Discord
  check Soundcloud: http://soundcloud.com/discorddnb
  
  check facebook: https://www.facebook.com/pages/Discord
  Tracklist Discord:
  01.Fields - Behind The Curtains
  02.London Elecricity - Ugotta Be Crazy
  03.Calyx & Teebee - Scavenger
  04.Calyx & TeeBee - Elevate This Sound
  05.Commix - Ultra Clean
  06.Nickbee - Alien
  07chris su - Fade
  08.Lenzman - Ever so slghtly
  09.?
  10.Marky & Spy - Yellow Shoes
• BSE - Podcast 025 - Guestmix by State of Mind (00:57:58) Brand new hour long drum'n'bass mix, this time mixed by State of Mind!
• Timeless Shock Podcast 004 (00:43:51) 01.Yanntek-Night Flight
  02.The Upbeats-Beyond Reality
  03.Black Sun Empire-Eraser (Neonlight RMX)
  04.Blockhe4d & Gridlok-Dumptruck
  05.Phace & Misanthrop-Motor
  06.Defazed-Am i Dreaming
  07.Effector-Revival
  08.Braincrack-Bad Business
  09.Black Sun Empire-All Is Lost (Memtrix RMX)
  10.Joe Ford-City 17
  11.Contrax-Elevator
  12.Contrax-Predator
  13.Fourward-Talk To Me
  14.Telekinesis-She Wants To Skate
  15.Braincrack-Board Steppa
  16.Insom-Final Decision (Braincrack RMX)
  17.Chris Su-F.A.T.E.
  18.Tenet-Krasnodar
  19.The Upbeats-Alone (Fourward RMX)
  20.Fourward-Steady State VIP Mix
• BSE - Podcast 024 - Special Edition (01:00:15) A bit different then usual The first 30 mins contains just demos that were send to podcastdemo(at)gmail.com, feel free to send us more track (just mail 320mp3s) and maybe you will make it to the next edition or more ... The second part is the mix we did for Crissy Criss s show on one extra, notice the new label =)
• BSE - Podcast 023 (00:49:53) Brand new hour long mix for drum'n'bass this time mixed by State of Mind!
• Timeless Shock Podcast 003 (01:02:40) 1.S.P.Y.-What The Future Holds Feat. Ian Shaw
  2.Tokyo Prose-Raised By Wolves
  3.A Sides-Undeniable
  4.Static-Bad For Me Original Mix
  5.Benzla-Dusk
  6.June Miller-Brave Man
  7.Jakwob-Blinding Hybrid Minds Remix
  8.Macca and Vector-Dawn
  9.Blueprint And Self Definition-Embrace
  10.Bungle-Astral Travel
  11.Hybrid Minds-Meant to Be
  12.Getz-Just Don t
  13.Ivy Lab-Afterthought feat. Frank Carter III
  14.Gerwin amp Nuage-Lying Portraits feat. 2Shy
  15.BrokenDrum-In My Dreams
  16.Hybrid Minds-Blame
  17.Roy Green amp Protone-2 Hours
  18.Survival amp Silent Witness-Feel It Original Mix
  19.S.P.Y-Love Hurts
  20.Technimatic-Solace
  21.Technimatic-Unfinished Business
  22.Original Sin-only love
• BSE - Podcast 022 - Guestmix by The Upbeats (01:02:00) Brand new hour long mix for drum'n'bass this time mixed by the Upbeats!
• BSE - Podcast 021 (01:01:18) Brand new hour long mix for drum'n'bass!
• BSE - Podcast 020 - BBC1xtra Black Sun Empire guestmix (00:43:37) This is the mix we did for Bailey on BBC 1xtra! Full of fresh bits check itout
• Timeless Shock Podcast 002 (00:54:42) 1.Yanntek - Ancients Of Future Original Mix
  2.Incube amp Lost - Lifepath
  3.Agressor bunx - Chupacabra original mix
  4.Jade - Test Subject Original Mix
  5.Audio - Headroom Original Mix
  6.Vidual - Nile feat. Annihilus
  7.Semantics - Too Close
  8.Optiv BTK - Whatever Mefjus Remix
  9.Royalston - Late Nights
  10.Vidual amp Voice EE - Code Of The Samurai
  11.Mefjus M Force - Abandon Original Mix
  12.Mindscape - Stardust
  13.Teddy Killerz NPhonix - Scary
  14.No Remorse - The Circular Motion
  15.Brainfuzz - Method Lean Original Mix
  16.Blokhe4d amp Prolix - Switchblade
  17.Teddy Killerz - New Drums
  18.Incube amp Lost - Satellite
  19.Black Sun Empire feat. Foreign Beggars - Dawn Of A Dark Day Original
  20.Enei - Movin Fast June Miller Remix
  21.Contrax - Black Orbit
  22.Aeph - One Last Chance
• Timeless Shock Podcast 001 (00:46:23) 1.hybrid minds - fade
  2.spectrasoul - away with me
  3.bcee-beyond belief(technicolour komatic remix)
  4.hybrid minds - i am trough
  5.bachelors of science - beast
  6.hybrid minds - inner beauty
  7.hybrid minds - lost
  8.lsb - overthinking
  9.hybrid minds - summer rain
  10.sabre - oblique
  11.totally enormous - gareden ( calibre remix)
  12.eatherwood - spoken
  13.override - white lights
  14.madmen - scandinavian
  15.flirt with dirt - beyond the rise
  16.survival - locked
  17.hybrid minds - patience
• BSE - Podcast 019 - Guestmix by Optiv and BTK (00:43:37) Warming up for Blackout Belgium June 23rd a special mix by BTK and Optiv! BTK is playing a b2b set with Optical at Blackout Belgium and a solo set Blackout London in Cable July 21st! For more information check www.blackoutbelgium.be or www.facebook.com/blackoutbelgium
• BSE - Podcast 018 - Guestmix by N.Phect (00:53:15) This edition N.Phect brings you a fresh mix to celebrate his new release on Obsessions! enjoy! If you like the podcast make sure to like us at www.facebook.com/blacksunempire
• BSE - Podcast 017 - Guestmix by Audio (00:25:21) This edition Audio takes control and brings it hard! enjoy! If you like the podcast make sure to like us at www.facebook.com/blacksunempire
• BSE - Podcast 016 (00:34:21) Lets start of 2012 with loads of new dark beats! If you like the podcast make sure to like us at www.facebook.com/blacksunempire
• BSE - Podcast 015 (01:04:21) End of the summer holiday is near so its time for new beats!
• BSE - Podcast 014 Guestmix by Rido (01:04:21) New Podcast specially mixed for you by Rido, who is about release on our label oBSEssions.
• BSE - Podcast 013 Studio Brussel mix by Black Sun Empire (01:04:21) A mix we did for Studio Brussel to promote the release of our new album "Lights and Wires".
• BSE - Podcast 012 Guestmix by Chris.SU (01:04:21) New Podcast specially mixed for you by Chris.SU, who is about to finish his solo album F.A.T.E., but you can listen to some of the forthcoming tracks right here.
• BSE - Podcast 011 - Guestmix by Nymfo (01:04:21) Special deep guest mix by our buddy Nymfo, Big upppppp
• BSE - Podcast 010 - Classics for the New Year (01:04:21) Special mix with a collection of classic but still inspirational tracks
• BSE - Podcast 009 - Subsessions guest mix by BSE (00:39:21) A mix we did for Bulletproofs Subsessions radio show on George FM
• BSE - Podcast 008 - Studio Brussel mix by BSE (00:34:04) A mix we did for Studio Brussel
• BSE - Podcast 007 - Guestmix by Mindscape and Jade (00:54:25) A slamming new mix our friends Mindscape & Jade made for us with mashing it up hungerian style :)
• BSE - Podcast 006 - Guestmix by Eye-D (00:54:25) A slamming new mix our friend Eye-D made for us exploring the harder sides of d'n'b :)
• BSE - Podcast 005 - Guestmix for DNB Arena by Black Sun Empire (00:54:25) A new mix including some dubstep tracks by us which will be released on our new label Shadows of the Empire and of course tons of new tracks on Black Sun Empire Recordings, oBSessions and many others!
• BSE - Podcast 004 (00:54:25) A new mix including some dubstep tracks by us which will be released on our new label Shadows of the Empire and of course tons of new tracks on Black Sun Empire Recordings, oBSessions and many others!
• BSE - Podcast 003 - Guestmix by Isotone (00:41:27) this episode consists of a guest mix by Isotone!
• BSE - Podcast 002 (00:51:17) mix by black sun empire and an interview with telemetrik
• BSE - Podcast 001 (00:13:17) mix by black sun empire

You can also see the Python source for the program that was used to generate this page.

In 2011, Mika and I bought in big at the Boston Red Bones party s charity raffle supporting MassBike and NEMBA and came out huge. I won $500 off a custom frame at Geekouse Bikes. For years, Mika and I have been planning to do the Tour d Afrique route (Capetown to Cairo), unsupported, on bike. People that do this type of ride sometimes use an expedition touring frame. I worked with Marty Walsh at Geekhouse to design a bike based on this idea. The concept was a rugged steel touring frame, built for my body and comfortable over long distances, with two quirks:

1. It s designed for 26 inch mountain bike wheels and mountain bike components to ensure that the bike is repairable with parts from the kinds of cheap mountain bikes that can be found almost everywhere in the world.
2. It includes S&S torque couplers that let me split the frame in half to travel with the bike as standard luggage.

As our pan-Africa trip kept getting pushed back, so did the need for the bike. Last week, I finally picked up the finished bike from Marty s shop in Boston. It is gorgeous. I absolutely love it. I m looking forward to building up the bicycle over the next couple months and I ll post more pictures when it s finished. I am blown away by Marty s craftsmanship and attention to detail. I am psyched that his donation made this bike possible and that I was able to get the frame while helping cycling in Massachusetts!

Quest for a terminal emulator The requirements I need a terminal emulator. This is a checklist of the features that I need:

• Foreground colour: #aaaaaa.
• Background colour: black.
• "Linux console" colour palette.
• Font: Monospace-10.
• Alt+Fnn to directly switch to one of the first 12 terminals, like in the Linux console.
• F11 to toggle fullscreen.
• Alt+'+', Alt+'-', Alt+'0' to control font sizes.
• All other keybindings disabled, so that terminal programs are free to use them.
• I occasionally need to switch to black-on-white for presentations.
• Tabs.
• When I open a new tab it needs to contain a shell opened inside the same directory of the last tab I was in. The way I normally start working is something like: cd workdir; x-terminal-emulator -e vim todolist and then I start opening new tabs.
• I need -e to work. In fact, I need the terminal to work as x-terminal-emulator -e cmd args...
• I need to conveniently pick a URL in a terminal and open it in Chromium, and not any other browser. Even better, open it in x-www-browser

My experience is that getting all of this to work is not being as easy as it seems, so I'm creating this page to track progress. gnome-terminal I've been happily using this for years, and it did everything I needed, until some months ago it started to open new tabs in the terminal's working directory instead of the last tab's working directory. This is a big point of frustration for me. It also started opening https urls with Firefox, although the preferred browser was Chromium. There seemed to be no way to control it: I looked for firefox or iceweasel in all gconf and dconf settings and found nothing. The browser issue was fixed by accident when I used Xfce4's settings application to change the browser from Chromium to Firefox and then back to Chromium. update, thanks to Mathieu Parent, Josh Triplett, Peter De Wachter, Julien Cristau, and Charles Plessy: It is also possible to restore the "new tab opened inside the same directory of the last tab I was in" behaviour, by enabling "run command as a login shell" so that /etc/profile.d/vte.sh is run (thanks Mathieu Parent for the link). That in turn spawned extra cleanup work in my .bashrc/.bash_profile/.profile setup, which has been randomly evolving since even before my first Debian "buzz" system. I found that it was setting PROMPT_COMMAND to something else to set the terminal title, conflicting with what vte.sh wants to do. With regards to loading /etc/profile.d/vte.sh by default, Peter De Watcher sent pointers to relevant bugs: here, here, and here. An alternative strategy is to work using the prompt rather than PROMPT_COMMAND; an example is in Josh Triplett's .bashrc from git://joshtriplett.org/git/home. Josh Triplett also said:

To fix the browser launched for URLs, you either need to use a desktop environment following GNOME's mechanism for setting the default browser, or edit ~/.local/share/applications/mimeapps.list and make sure x-scheme-handler/http, x-scheme-handler/https, and x-scheme-handler/ftp are set to your preferred browser's desktop file basename under [Added Associations].

All my issues with gnome-terminal are now gone and I'm only too happy to go back to it. rxvt-unicode-256color urxvt took some work. This is where I got with configuration:

URxvt.font: xft:Monospace-10:antialias=true
URxvt.foreground: #aaaaaa
URxvt.background: black
URxvt.scrollBar_right: true
URxvt.cursorBlink: true
URxvt.perl-ext-common: default,matcher,tabbedex
URxvt.url-launcher: /usr/bin/x-www-browser
URxvt.matcher.button: 1
URxvt.perl-lib: /home/enrico/.urxvt/perl
URxvt.color0: black
URxvt.color1: #aa0000
URxvt.color2: #00aa00umask
URxvt.color3: #aa5500
URxvt.color4: #0000aa
URxvt.color5: #aa00aa
URxvt.color6: #00aaaa
URxvt.color7: #aaaaaa
URxvt.color8: #555555
URxvt.color9: #ff5555
URxvt.color10: #55ff55
URxvt.color11: #ffff55
URxvt.color12: #5555ff
URxvt.color13: #ff55ff
URxvt.color14: #55ffff
URxvt.color15: #ffffff

I got all of the tab behaviour that I need by "customizing" the tab script (yuck github ). Missing

• Bold fonts only work if I set TERM=rxvt
• The implementation for opening a new tab in the directory of the current tab is rather fragile.
• Resizing the terminal window causes an annoying flicker

sakura Configuration is in .config/sakura/sakura.conf and these bits help:

colorset1_fore=rgb(170,170,170)
colorset1_back=rgb(0,0,0)
colorset1_opacity=99
colorset2_fore=rgb(0,0,0)
colorset2_back=rgb(254,254,254)
colorset2_opacity=99
font=Monospace 10
show_always_first_tab=No
scrollbar=false
fullscreen_key=F11
palette=linux

Missing

• Alt+Fnn to directly switch to one of the first 12 terminals, like in the Linux console. Sakura hardcodes using numbers for switching, and only allows to change the modifier.
• Alt+'+', Alt+'-', Alt+'0' to control font sizes.
• Tabs are huge and take way too much screen space.

lxterminal Configuration is in .config/lxterminal/lxterminal.conf and this is relevant to me:

[general]
fontname=DejaVu Sans Mono 10
fgcolor=#aaaaaaaaaaaa
disallowbold=false
cursorblinks=true
tabpos=top
hidescrollbar=false
hidemenubar=true
hideclosebutton=true
disablef10=true
disablealt=true

Also, to open a url directly you control+click it. Missing

• Alt+Fnn to directly switch to one of the first 12 terminals, like in the Linux console.
• F11 to toggle fullscreen.
• Alt+'+', Alt+'-', Alt+'0' to control font sizes.
• I occasionally need to switch to black-on-white for presentations: this is inconvenient, as it requires to set foreground and background separately each time.

terminator Configuration is in .config/terminator/config and this is relevant to me:

[global_config]
  use_custom_url_handler = True
  custom_url_handler = x-www-browser
  inactive_color_offset = 1.0
[keybindings]
  close_term = None
  close_window = None
  copy = None
  cycle_next = None
  cycle_prev = None
  go_down = None
  go_next = None
  go_prev = None
  go_up = None
  group_all = None
  group_tab = None
  hide_window = None
  move_tab_left = None
  move_tab_right = None
  new_tab = None
  new_terminator = None
  new_window = None
  next_tab = None
  paste = None
  prev_tab = None
  reset_clear = None
  reset = None
  resize_down = None
  resize_left = None
  resize_right = None
  resize_up = None
  rotate_ccw = None
  rotate_cw = None
  scaled_zoom = None
  search = None
  split_horiz = None
  split_vert = None
  switch_to_tab_1 = <Alt>F1
  switch_to_tab_2 = <Alt>F2
  switch_to_tab_3 = <Alt>F3
  switch_to_tab_4 = <Alt>F4
  switch_to_tab_5 = <Alt>F5
  switch_to_tab_6 = <Alt>F6
  switch_to_tab_7 = <Alt>F7
  switch_to_tab_8 = <Alt>F8
  switch_to_tab_9 = <Alt>F9
  switch_to_tab_10 = <Alt>F10
  toggle_scrollbar = None
  toggle_zoom = None
  ungroup_all = None
  ungroup_tab = None
[profiles]
  <span class="createlink">default</span>
    palette = "#000000:#aa0000:#00aa00:#aa5500:#0000aa:#aa00aa:#00aaaa:#aaaaaa:#555555:#ff5555:#55ff55:#ffff55:#5555ff:#ff55ff:#55ffff:#ffffff"
    copy_on_selection = True
    icon_bell = False
    background_image = None
    show_titlebar = False

Missing

• I need -e to work. In fact, I need the terminal to work as x-terminal-emulator -e cmd args.... #734655 but should be fixed soon
• New windows start with the title bar visible, even if I configured it not to show. It disappears as soon as the window gets focused, causing the terminal contents to resize. It is just a glitch, but oh so annoying!

update: Richard Hartmann pointed out that terminator's upstream maintainer now changed after the old one didn't have time any more, and it should have a release with a ton of improvements anytime soon. xfce4-terminal Configuration is in .config/xfce4/terminal, and this is relevant to me: terminalrc:

[Configuration]
FontName=Monospace 10
MiscAlwaysShowTabs=FALSE
MiscBell=FALSE
MiscBordersDefault=TRUE
MiscCursorBlinks=FALSE
MiscCursorShape=TERMINAL_CURSOR_SHAPE_BLOCK
MiscDefaultGeometry=80x24
MiscInheritGeometry=FALSE
MiscMenubarDefault=FALSE
MiscMouseAutohide=FALSE
MiscToolbarDefault=FALSE
MiscConfirmClose=TRUE
MiscCycleTabs=TRUE
MiscTabCloseButtons=TRUE
MiscTabCloseMiddleClick=TRUE
MiscTabPosition=GTK_POS_TOP
MiscHighlightUrls=TRUE
ShortcutsNoMenukey=TRUE
ShortcutsNoMnemonics=TRUE
ColorForeground=#aaaaaaaaaaaa

accels.scm:

(gtk_accel_path "<Actions>/terminal-window/goto-tab-1" "<Alt>F1")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-2" "<Alt>F2")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-3" "<Alt>F3")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-4" "<Alt>F4")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-5" "<Alt>F5")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-6" "<Alt>F6")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-7" "<Alt>F7")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-8" "<Alt>F8")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-9" "<Alt>F9")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-10" "<Alt>F10")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-11" "<Alt>F11")
(gtk_accel_path "<Actions>/terminal-window/goto-tab-12" "<Alt>F12")

update: Yves-Alexis Perez points out that to disable the F1 for help in the terminal, you need to remove the accelerator. I tried this and this and didn't have success, but I confess I did not dig too much into it. Although xfce4-terminal -e does not work as I expect, xfce4-terminal registers a wrapper for x-terminal-emulator that does the right thing with respect to -e (also thanks Yves-Alexis Perez). Missing

• Alt+'+', Alt+'-', Alt+'0' to control font sizes.
• All other keybindings disabled, so that terminal programs are free to use them. I could not find a way to disable F1 for help.
• I occasionally need to switch to black-on-white for presentations. I can switch to a "Black on white" preset, but there is no "Gray on black" to switch back to. I can switch back to "White on black", but then I need to manually set the text colour to #aaaaaa. update: Yves-Alexis Perez found that you can add presets to .local/share/colorthemes taking examples from /usr/share/xfce4/terminal/colorschemes; next time I consider switching to xfce4-terminal I'll try that.

roxterm Configuration is in .config/roxterm.sourceforge.net/ split in several files corresponding to profiles. This is a reasonable starting point for me: Profiles/Default:

[roxterm profile]
colour_scheme=Default
disable_menu_access=1
disable_menu_shortcuts=1
disable_tab_menu_shortcuts=0
tab_close_btn=0
hide_menubar=1
always_show_tabs=0

Colours/Default:

[roxterm colour scheme]
0=#000000000000
1=#aaaa00000000
2=#0000aaaa0000
3=#aaaa55550000
4=#00000000aaaa
5=#aaaa0000aaaa
6=#0000aaaaaaaa
7=#aaaaaaaaaaaa
8=#555555555555
9=#ffff55555555
10=#5555ffff5555
11=#ffffffff5555
12=#55555555ffff
13=#ffff5555ffff
14=#5555ffffffff
15=#ffffffffffff
palette_size=16
foreground=#aaaaaaaaaaaa
background=#000000000000
cursor=#cccccccccccc
bold=
dim=

Shortcuts/Default:

[roxterm shortcuts scheme]
File/New Window=
File/New Tab=
File/Close Window=
File/Close Tab=
Tabs/Previous Tab=
Tabs/Next Tab=
Edit/Copy=
Edit/Paste=
View/Zoom In=<Control>plus
View/Zoom Out=<Control>minus
View/Normal Size=<Control>0
View/Full Screen=F11
View/Scroll Up One Line=
View/Scroll Down One Line=
Help/Help=
Edit/Copy & Paste=
Search/Find...=
Search/Find Next=
Search/Find Previous=
File/New Window With Profile/Default=
File/New Tab With Profile/Default=
Tabs/Select_Tab_0=<Alt>F1
Tabs/Select_Tab_1=<Alt>F2
Tabs/Select_Tab_2=<Alt>F3
Tabs/Select_Tab_3=<Alt>F4
Tabs/Select_Tab_4=<Alt>F5
Tabs/Select_Tab_5=<Alt>F6
Tabs/Select_Tab_6=<Alt>F7
Tabs/Select_Tab_7=<Alt>F8
Tabs/Select_Tab_8=<Alt>F9
Tabs/Select_Tab_9=<Alt>F9
Tabs/Select_Tab_10=<Alt>F10
Tabs/Select_Tab_11=<Alt>F11
Tabs/Select_Tab_12=<Alt>F12

Global:

[roxterm options]
edit_shortcuts=0
prefer_dark_theme=1
colour_scheme=Default
warn_close=1

Missing Nothing of my initial requirements seems to be missing, really, so I'm sticking to it for a while to see what happens. The first itch to scratch is that when the menubar is hidden, the popup menu becomes the entire menubar contents, which does not fit the general use case to have a contextual menu with the most common shortcuts. I'll just declare it useless and get myself used to some new hotkey for starting a new terminal. update: after fixing my issues with gnome-terminal I've switched back to gnome-terminal: its interface feels less clunky as I'm already used to it. Other references Guillem Jover made a similar analysis in 2009, it can be found here. Thomas Koch mentioned that termit should be able to do all I need, and is scriptable in Lua. I like the sound of that, and it's definitely one I should look next time I find myself shopping for terminal emulators.

There are numerous benefits to shopping online you can order stuff and pay for it from the comfort of your own home and it ll arrive on your doorstep in just a few days. wonderful, and so many words have been written about the benefits over the years that there s no need to belabour the point, But there are some things about it that really suck and make me NOT want to order stuff online most of the time my distaste for the privacy and delivery problems is enough to dissauade me from buying anything, helped by the fact that I live a fairly non-consumerist lifestyle (and for a geek, I have an almost non-existent gadget-fetish) but occasionally I want or need something that isn t available locally or which my ill-health makes impractical to buy in person (i ve been effectively housebound or in hospital for most of the year) so here are the things that piss me off most about shopping online.

1. Loss of anonymity and privacy. You can walk into any shop and pay cash for whatever you want, they don t need to know who you are or where you live, and they don t get to accidentally add you to a mailing list against your express wishes oh, we didn t realise that when you said DO NOT SPAM ME, you actually meant DO NOT SPAM ME we ll just keep spamming you for another six months until we get around to processing your removal request . partial solution: use a different email address with each online shop. boycott the shop and destroy the address if they spam. what sucks is that this is actually necessary. it doesn t matter how loudly I say DO NOT SPAM ME. DO NOT ADD ME TO ANY MAILING LISTS. DO NOT ASK ME TO COMPLETE A SURVEY. DO NOT CONTACT ME FOR ANY REASON NOT DIRECTLY RELATED TO DELIVERING MY ORDER. MY PERSONAL INFORMATION IS PROVIDED SOLELY SO THAT YOU CAN SHIP MY ORDER TO ME AND MAY NOT BE USED FOR ANY OTHER PURPOSE. FAILURE TO RESPECT MY PRIVACY WILL RESULT IN IMMEDIATE AND PERMANENT BOYCOTT (yes, that IS the text I use in the comments/instructions field of every order I place), marketing vermin will decide that I really want their spam after all because their spam is super interesting and important and isn t really spam at all.
2. nosy demands for unneccessary information. OK, they need your addresss to ship your parcel but they don t need your phone number, and they don t need to tie your order to your facebook or other bullshit social-spam account. most online order forms have phone number as a required field. Fortunately, they usually accept 0000000 or some other bogus non-phone number as a valid number .if not, i give them their own phone number.
3. the thing that really shits me the most about online shopping is that both couriers and australia post suck. the lazy fuckers usually don t even bother attempting to deliver to residential addressess. at best, they just stick a non-delivery card in your letterbox without even attempting to knock on the door ..and sometimes they don t even bother doing that. the delivery driver just files a bogus failed to deliver or recipient refused delivery with their office.

i ve made four online purchases in the last month and a half. only one of them was delivered correctly to my door, even though I was sitting at my desk in the front room of the house, a few feet from my front door, and regularly monitoring the parcel s tracking web page so I knew it was arriving. parcel 1 (Nov 16): DHL from NZ to AU. delivered perfectly. delivered in about two days for $17. order value: around $35. parcel 2 (Nov 20): Aust Post from WA to Vic, Express Post (costs a few bucks more than standard post). order value: around $80. lazy driver didn t bother to attempt delivery. left card in letter box. i had to pick it up 2 days later from a post office the next suburb over (it wasn t there yet on the first attempt to pick up, the next day). Aust Post offered to maybe put me in touch with their re-delivery people who might possibly be able to re-deliver the parcel next week sometime maybe, if they felt like it. knowing that I had another hospital appt the next week, I declined (if i hadn t, it would have been an absolute certainty that they would try to deliver it while i was out). parcel 3 (nov 29): DHL from NZ to AU. order value: around $85. lazy courier didn t even bother to leave a card, just logged it as Recipient refused delivery . This refused delivery lie infuriated me when i saw it on the tracking page so i phoned and yelled at them a lot. DHL delivered it later the same day. if they hadn t I would have had to get myself over to the other side of town during business hours and pick it up from their South Melbourne depot. parcel 4 (today, Dec 16): Aust Post from NSW to Vic, Express Post . order value: around $160. lazy driver didn t even bother to leave a card, just logged it as Attempted delivery being carded to Australia Post outlet . Complete bullshit. There was no delivery attempt, not even a card in the letterbox, let alone a knock on the door with my parcel. Rang Aust Post on 8847 9045 (a phone number curiously absent from their tracking page, but which I had written down after their failure to deliver on Nov 20) and complained. they claim that they will try to deliver it today. i ll believe it when I see it. UPDATE @4.30pm: no, it s not going to be delivered today. they say they might choose to deliver it tomorrow or sometime in the future, if the delivery center manager feels like it. i told them that this is not an option my parcel WILL be delivered, it is what they were paid to do so it is what they ARE going to do. btw, the tracking page says that they attempted delivery at 12.15 today (they didn t not even a card in the letterbox), but the tracking page wasn t updated with that until about 2.30pm. by a complete non-coincidence their delivery center allegedly closes at 2pm, so it s impossible to complain about non-delivery in time for the complaint to do any good. Score so far: DHL 50% delivery rate. Aust Post: 100% failure rate. Annoyance Rate: extremely high. Desire to repeat the experience: non-existent. The Australia Post delivery problems are particularly annoying. I ve always thought of the network of local post offices to be a huge advantage for parcel delivery if i m not home, my parcel will go to a local post office and I can pick it up from there. And this is a great advantage. I used to take advantage of it when I was well enough to work. In fact, I d insist on delivery by Aust. Post rather than by a courier for exactly this reason, a local post office is far more convenient than some courier s depot on the other side of town or out in some far outer-suburban hellhole. But when it s used as an excuse to not even bother attempting delivery, it sucks. I m not well, and I should have been lying in bed reading or sleeping today, not wasting what little energy I have waiting for a parcel that never arrived and I certainly shouldn t have to phone Aust Post or DHL to yell at them for failing to do the job that they have been paid to do. shopping online whinge of the day is a post from: Errata

Some of you might have noticed there is a new nagios-plugins version in the row. To support upstream in evaluating bugs and bringing the code to a wider audience, I uploaded the latest development version into Debian unstable. Since this package version contrib/ is dropped by upstream. But we stopped shipping the latest plugins of contrib/ with Debian wheezy. We also removed perlmods/ from the upstream tarball, as this was never used by our package. The packaging changes are:

* New upstream git snapshot (b15adb7762)
  - Adjust debian/copyright
* Droped the following upstream integrated patches
  - 05_fix_gets_undefined_in_iso_c11.dpatch
  - 10_check_apt_perfdata.dpatch
  - 11_check_nt_npe.dpatch
  - 12_check_smtp_double_threshold.dpatch
* Fix removing empty /usr/include
* Add new check_dbi into nagios-plugins-standard
* Remove whois from Recommands, as check_bgpstate is removed
* Cleanup debian/rules from unused stuff
* Provide information about repackaging
  - Extend debian/README.source
  - Add debian/bin/repack.sh
* Updating standards version to 3.9.4 (no changes needed)
* Add libfreeradius-client-dev to build-deps and remove libradiusclient-ng-dev
  (Closes: #721621)
* Remove traces of contrib/ from debian/copyright
* Remove command.cfg from examples in nagios-plugins-common, it was removed
  upstream

The Debian Nagios Maintainer and Upstream Developer are asking you to try out this new package on non production systems. Not that we think there might be a high risk for damage, but you know .. :) The latest version of the plugins are running on several systems already, but it is nearly impossible to test all scenarios even automated. If you find bugs, please report all packaging bugs into the BTS. Upstream bugs you might consider to report in the upstream bugtracker. If you want to give it a try on Debian wheezy, you could install the packages from our wheezy-backports repository:

    # wget "http://ftp.cyconet.org/debian/sources.list.d/wheezy-backports-cyconet.list" \
        -O /etc/apt/sources.list.d/wheezy-backports-cyconet.list
    # aptitude update
    # aptitude -t wheezy-backports install nagios-plugins

For adding our archive key, you can just install the package "debian-cyconet-archive-keyring"

this week(end) I was more in the "RC bug fix flow" than in the last weeks, & here are the results:

• #665518 src:clipit: "clipit: Including individual glib headers no longer supported"
  add patch from Michael Biebl, upload to DELAYED/2 (NMU originally prepared by Sebastian Ramacher)
• #701406 src:nagios-plugins: "nagios-plugins: ftbfs with eglibc-2.17"
  add patch from Ubuntu / Robie Basak, upload to DELAYED/2, then cancelled on maintainer's request, who uploaded the fixed package himself
• #707393 src:gorm.app: "gorm.app: FTBFS: GormCore/./obj/libGormCore.so: undefined reference to class_pose_as'"
  add patch from Ubuntu / Julian Taylor, upload to DELAYED/2
• #710768 ganglia-webfrontend: "ganglia-webfrontend: please update libgd dependencies"
  drop dependency on libgd2*, upload to DELAYED/2
• #711800 src:python-poppler: "python-poppler: FTBFS: /usr/bin/make: unrecognized option '--prefix --exec-prefix --includes --libs --cflags --ldflags --extension-suffix --help --configdir'"
  apply changes from Ubuntu / Matthias Klose, upload to DELAYED/2
• #713204 src:voms-api-java: "voms-api-java: FTBFS: cp: cannot stat 'target/site/javadoc/apidocs': No such file or directory"
  upload NMU with BouncyCastle patch prepared by Emmanuel Bourg to DELAYED/2
• #713360 src:regina-normal: "regina-normal: FTBFS: CMake Error: The following variables are used in this project, but they are set to NOTFOUND. PYTHON_LIBRARY"
  apply improved patch from Peter Green, upload to DELAYED/2
• #713450 src:oregano: "oregano: FTBFS: ld: sheet/libsheet.a(grid.o): undefined reference to symbol 'floor@@GLIBC_2.2.5'"
  add patch from Petter Reinholdtsen, upload to DELAYED/2
• #713627 src:rox: "rox: FTBFS: ld: support.o: undefined reference to symbol 'floor@@GLIBC_2.2.5'"
  add patch to link against math lib, upload to DELAYED/2
• #713649 src:gdis: "gdis: FTBFS: gdis.h:269:18: fatal error: glib.h: No such file or directory"
  propose a patch

I know it's been ages since I last blogged anything at all. To some degree I had a down phase, but I hope to get out of it. It's nice to see that there are people out there who give me a prod every now and then, and don't let me drown. Thanks, most of you probably know that I mean exactly you, and in case you are uncertain, you probably are meant if you contact me every now and then. Anyway, if you remember that I blogged about Lindsey Stirling last year and you started to follow her you might have already stumbled upon the next band I'd like to present. I'm speaking of Pentatonix. These five humans have terrific voices that they use in a very special way that is quite unique. I don't want to delay the songs I want to present to you any longer, so here they are:

• Somebody That I Used To Know (Gotye cover): The song in itself is already great, but this version definitely gives me goosebumps.
• Thrift Shop (Macklemore & Ryan Lewis cover): Avi has the perfect bass voice, and I totally have to agree with the chorus, this is freaking awesome.
• Carol of the Bells: I know it's not this time of the year, but the song shows another great facet of their work.

Like always, enjoy! And hopefully read me again more regularly again.

/music permanent link Comments: 1 Flattr this

As most people that are using that funny grey on black thing with the blinking white box AKA a commandline, I do have a heavily configured shell. zsh in my case. Some while ago my old configuration for it started to annoy me and so I set out to redo it. With the basic requirement to be flexible and able to adjust to various zsh versions (back as far as Lenny). I ve set out and looked how others do it and took the (I hope) best bits and put them together in a way I like it. Maybe others want to pick from me, so here I describe a little, maybe someone is interested First - the config is completly inside .zsh. The only thing directly in my $HOME is a symlink from $HOME/.zshenv to $HOME/.zsh/zshenv.home. All in one place, nicer this way. The zshenv just sets ZDOTDIR, so zsh then uses the .zsh itself. Next I am using modules . Well, actually everything is splitted out in small(er) files, so its way easier to maintain. And to overwrite stuff wherever I need to. So my .zshrc just loads those module files - and then goes and checks if it finds the same file inside a series of subdirectories. Those subdirectories are based on the hostname, the kernel name, the username, the domain name and the name of the distribution of the system. And a number of combinations of those. That system allows me, for example, to have a set of aliases defined only on Debian systems (like those to do with apt-get & co). Or define some extra variables if I login to the host franck, domain debian.org. Or whatever more. I m also on the way of doing something similar for all my dotfiles. While I was working at that I finally got fed up with the fact that my prompt, which is based on Phil! s wasn t doing what I wanted it on various of the hosts I access. Thankfully someone pointed me at a change to the grml zsh config: Frank Terbeck rewrote their prompt to make use of the zstyle system. Now that got me going, I like the idea of having the whole prompt easily configurable and changeable. My prompt always has shown slight differences depending on where the shell runs, which meant I had to carefully craft PS1 for every such change, and when one changes something one had to check all the places to adjust them too. No longer. I took Franks work and extended it for me. I wanted to still have a design matching my old prompt (minus colors, I changed color themes anyways), but with full flexibility the zstyle system can offer here. Now I am at a point where

• One zstyle call can change the information or order in my prompt.
• The prompt automagically leaves out information when the terminal width gets under a limit,
• I can have whatever extra information items in the prompt, even if the prompt never defined a default for it. Including running neccessary functions to update those extra items.
• the prompt switches between color and black/white mode with one zstyle change,
• the prompt draws lines differently, depending on the capabilities of the terminal.

As an example, on the ftp-master host my prompt, while otherwise being the same as everywhere else, contains one extra item - displaying the current status of the archive (dinstall). If you want to try it, the setup file is available, but note that I don t give any warranty. :) Works for me . I load it in my Prompts module, while having the prompt setup file in my function path. The 4 commented lines, my testcase, are a nice example of a custom token, though a real life one, the setup for the ftp-master prompt with the one extra item can be found over here. Comments? Bugfixes? Enhancements? Update: Got asked for an example how to use my prompt to fake another. So here is what you need to do to use my prompt setup to imitate the prompt clint, as delivered with zsh:

autoload promptinit && promptinit
zstyle ':prompt:ganneff' vcs_info true
# Alternatively you can set whatever you like it to be.
zstyle ':prompt:ganneff' set_vcs_info_defaults true
zstyle ':prompt:ganneff' colors true
## no right prompt
zstyle ':prompt:ganneff:right:setup' use-rprompt false
## color of brackets depending on variable
zstyle ':prompt:ganneff:*:items:openbracket' pre '$ $ SSH_CLIENT+"$ PR_YELLOW " :-"$ PR_RED " '
zstyle ':prompt:ganneff:*:items:openbracket' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:*:items:closebracket' pre '$ $ SSH_CLIENT+"$ PR_YELLOW " :-"$ PR_RED " '
zstyle ':prompt:ganneff:*:items:closebracket' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:*:items:openanglebracket' pre '$ $ SSH_CLIENT+"$ PR_YELLOW " :-"$ PR_RED " '
zstyle ':prompt:ganneff:*:items:openanglebracket' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:*:items:closeanglebracket' pre '$ $ SSH_CLIENT+"$ PR_YELLOW " :-"$ PR_RED " '
zstyle ':prompt:ganneff:*:items:closeanglebracket' post '$ PR_NO_COLOR '
## extra date format, and its color
zstyle ':prompt:ganneff:*:items:date' token '%D %a %y/%m/%d %R %Z '
zstyle ':prompt:ganneff:*:items:date' pre '$ PR_CYAN '
## pts. %l instead of %y, also color again
zstyle ':prompt:ganneff:*:items:pts' token '%l'
zstyle ':prompt:ganneff:*:items:pts' pre '$ PR_GREEN '
zstyle ':prompt:ganneff:*:items:pts' post '$ PR_NO_COLOR '
## host ends with :
zstyle ':prompt:ganneff:*:items:host' token '%m:'
## and a different style for the rc level
zstyle ':prompt:ganneff:*:items:rc' token '%(?..[%?%1v] )'
zstyle ':prompt:ganneff:*:items:rc' pre ''
## change color for other parts that differ to my default
zstyle ':prompt:ganneff:*:items:user' pre '$ PR_GREEN '
zstyle ':prompt:ganneff:*:items:host' pre '$ PR_GREEN '
zstyle ':prompt:ganneff:*:items:at' pre '$ PR_GREEN '
zstyle ':prompt:ganneff:*:items:path' pre '$ PR_GREEN '
zstyle ':prompt:ganneff:*:items:history' pre ''
## Show the shell level in a different way
zstyle ':prompt:ganneff:*:items:shell-level' pre ''
zstyle ':prompt:ganneff:*:items:shell-level' token 'zsh%(2L./$SHLVL.) '
## And history is just a bold number. Lazy here, not using pre and post
zstyle ':prompt:ganneff:*:items:history' token '%B%h%b '
## And the last part in prompt, a # or % depending on privileges
## Using standard zsh tokens for bold
zstyle ':prompt:ganneff:*:items:privileges' pre '%B'
zstyle ':prompt:ganneff:*:items:privileges' post '%b'
## Now there are two parts not defined by default, so lets create them
## Both are simple existing variables, no need for extra precmd functions
## system info
zstyle ':prompt:ganneff:extra:ostype' pre '$ PR_CYAN '
zstyle ':prompt:ganneff:extra:ostype' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:extra:ostype' token "$ MACHTYPE /$ OSTYPE /$(uname -r)"
## zsh version
zstyle ':prompt:ganneff:extra:zshvers' pre '$ PR_CYAN '
zstyle ':prompt:ganneff:extra:zshvers' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:extra:zshvers' token "$ ZSH_VERSION "
zstyle ':prompt:ganneff:left:full:setup' items \
    openbracket date closebracket openbracket pts closebracket openbracket ostype closebracket \
    openbracket zshvers closebracket newline openanglebracket user at host \
    path closeanglebracket newline \
    shell-level space history rc space vcs privileges space
prompt ganneff

And if you now tell me Uh, thats so much more than just saying /prompt clint/ , then you are right. But then: This way is flexible. As I wrote above, my prompt on the ftpmaster host is different. Actually, my prompt on all machines inside the domain debian.org differs, by having

zstyle ':prompt:ganneff:*:items:host' pre '$ PR_YELLOW '

in the Prompts definition for domain:debian.org. And thats enough to show me im on a .debian.org machine by a yellow hostname, instead of my default red. On the ftpmaster host I have the additional few lines: # Want one more piece in my prompt here, dinstall status zstyle :prompt:ganneff:left:full:setup items \ ulcorner line openparentheses user at host pts closeparentheses line history \ line dinstall line shell-level line flexline openparentheses path closeparentheses line urcorner newline \ llcorner line rc openparentheses time closeparentheses line vcs line change-root pipe space

zstyle ':prompt:ganneff:extra:dinstall' pre '$ PR_CYAN '
zstyle ':prompt:ganneff:extra:dinstall' post '$ PR_NO_COLOR '
zstyle ':prompt:ganneff:extra:dinstall' token '$DINSTALL'
zstyle ':prompt:ganneff:extra:dinstall' precmd jj_update_dinstall
zmodload zsh/mapfile
jj_update_dinstall ()  
    DINSTALL="$ $ (z)$ (f)mapfile[/srv/ftp.debian.org/web/dinstall.status] [2] [3,99] "
 

And woo, thats simple. I think. (There ought to be a way to just easily add the item at a defined place in the items zstyle, but meh, too lazy to look).

The new release of dose, apart from a few bug fixes, ships a new and improved version of dose-builddebcheck (man page). All the improvements done to dose-builddebcheck are from a set of patches submitted by Johannes Schauer in the context of the Bootstrap GSoC. We are still actively working on this. I invite you to read josh's recent blog post on the topic. For more background and discussion, you can have a look at the archives of this mailing list. Dose-builddebcheck (or buildcheck for short) is similar in intent to dose-debcheck but for source packages. Buildcheck allows you to check, just by looking at the Source and Packages files, if all the dependencies can be satisfied and installed, all this in a matter of seconds (less then 30 secs to test all the source packages in sid on my laptop). A simple example : This will check for all source packages in the Source file if their build dependencies can satisfied on amd64 given the Packages binary file. This is nice but nothing new. A script based on the old edos tools has been around for quite a long time. We want more ! The new exciting feature brought by Johannes is the capability of checking source packages for cross-compilation : This will check, if the source package 'picolisp' in the Sources file can be cross compiled for 'armel' on the native architecture 'amd64' given the list of binary packages in the Packages file. The generated report is, as for dose-debcheck, encoded in yaml and it can be simply parsed using an off-the-shelf library. Apt is the canonical tool that can be used to check if a package can be cross compiled. Josh found a few discrepancies between dose and apt results. This was a very good test for both tools: Bug #683786 is a very interesting read... Dose 3.1.1 (the latest release) should land soon in experimental. Otherwise you can get it from our (new) project homepage.

good to see that there are again Bug Squashing Parties going on, & that quite a few people send patches to the Bug Tracking System &/or make Non-Maintainer Uploads. here are my contributions for this week:

• #636158 maradns: "maradns: Debian default config is not robust to user change + upgrade"
  send a patch to the BTS
• #687604 libkdtree++-dev: "libkdtree++-dev: kdtree headers are unusable on gcc 4.7.1"
  sponsor NMU from Sebastian Ramacher, upload to DELAYED/2
• #687825 src:icinga: "FTBFS on kfreebsd-* due to missing build dependency"
  add info to bug report, fixed by maintainer the day after
• #687879 readpst: "readpst: copyright file missing after upgrade (policy 12.5)"
  replace directory with symlink in postinst, upload to DELAYED/2
• #688112 gummi: "gummi leaks file descriptors leading to a crash if the fd limit is reached"
  add patch from Justus Winter, upload to DELAYED/2
• #688194 prewikka: "prewikka: modifies conffiles (policy 10.7.3): /etc/prewikka/prewikka.conf"
  don't ship configuration file in /etc, upload to DELAYED/2
• #688249 nuauth: "nuauth: postinst deletes files from /usr/share/nuauth/"
  copy template configuration file instead of moving it, upload to DELAYED/2
• #688615 nufw: "nufw: postinst deletes /usr/share/nufw/nufw.conf breaking package reconfiguration"
  copy template configuration files instead of moving them, upload to DELAYED/2

Last week, I was invited to give a talk about my Debian bootstrapping efforts at IRILL in Paris. The slides of my talk are online as pdf. The time I spent in Paris with Pietro Abate was very fruitful. I have to thank him and Roberto di Cosmo for inviting me and even compensating for my travel expenses. The things we actually managed to implement during my visit:

• removed huge chunks of code that were not needed anymore, making everything more concise and pretty: ended up removing over 1600 lines
• basebuildsystem.ml can now fill add-cross-sources.list with sources for debhelper (as debhelper is quite build-essential)
• start evaluating Gentoo as a source for reduced build dependencies
• add unit test skeleton and material
• compile with dose3 master
• add graphML output
• feed graphs into analysis tools for visualization

The two most important things (in my opinion) that we came up with for future implementation, were the idea to harvest reduced build dependency information from Gentoo as well as finding a flaw in the way the current dependency graph relates to binary packages and their installation sets. I am still busy with evaluating output from my trials with Gentoo, so I will cover this topic in a later blog post once I generated the actual impact on the dependency graph. The current status is, that Gentoo USE flags allow me to find possibly droppable build dependencies for 250 out of the 350 interesting Debian source packages that are part of the main scc. Pietro also found a current flaw in how the dependency graph is generated. While source package A and B might both depend on binary package C (and its installation set), it is wrong to add a dependency to C from both source packages without further verification. Due to virtual packages and disjunctive dependencies, C might have many possible installation sets. Only one of them is chosen in the current code. The problem is, that this one chosen set might conflict with the other build dependencies of source packages depending on C. Therefor, there must exist multiple binary package nodes C, each with a different installation set, dynamically generated as they are needed. Source packages must point to the node for C that possesses an installation set that doesnt conflict with its own build dependencies. Other TODO notes that we came up with and that I will be implementing are:

• integrating dose3 as a git submodule
• create a proper build system
• try using a different cudf solver
• unit tests
• finally coming up with a name (suggestions welcome - I'm bad at name-finding)
• building a Debian package (depends on having a name first)
• formalize/visualize/document the current algorithms
• to break the main scc, use additional heuristics like:
  • the order induced by reduced_dist to classify nodes in the graph
  • centrality/distance in graph
  • comparing scc of different Debian snapshots with each other

As I cannot always depend on new dose3 versions being pushed to Debian Sid right after their release, I will do the dose3 git submodule integration over the weekend. This will allow me to evaluate the results I got from my evaluation of Gentoo USE flags that I gathered over the past week.

A copy of this post is sent to soc-coordination@lists.alioth.debian.org as well as to debian-bootstrap@lists.mister-muffin.de.

Diary

July 2

• playing around with syntactic dependency graphs and how to use them to flatten dependencies

July 4

• make work with dose 3.0.2
• add linux-amd64 to source architectures
• remove printing in build_compile_rounds
• catch Not_found exception and print warning
• use the whole installation set in crosseverything.ml instead of flattened dependencies
• detect infinite loop and quit in crosseverything.ml
• use globbing in _tags file
• use wildcards and patsubst in makefile

July 5

• throw a warning if there exist binary packages without source packages
• add string_of_list and string_of_pkglist and adapt print_pkg_list and print_pkg_list_full to use them
• fix and extend flatten_deps - now also tested with Debian Sid

July 6

• do not exclude the crosscompiled packages from being compiled in crosseverything.ml
• clean up basebuildsystem.ml, remove old code, use BootstrapCommon code
• clean up basenocycles.ml, remove unused code and commented out code
• add option to print statistics about the generated dependency graph
• implement most_needed_fast_wrong as well as most_needed_slow_correct and make both available through the menu

July 7

• allow to investigate all scc, not only the full graph and the scc containing the investigated package
• handle Not_found in src_list_from_bin_list with warning message
• handle the event of the whole archive actually being buildable
• replace raise Failure with failwith
• handle incorrectly typed package names
• add first version of reduced_dist.ml to create a self-contained mini distribution out of a big one

July 8

• add script to quickly check for binary packages without source package
• make Debian Sid default in makefile
• add *.d.byte files to .gitignore
• README is helpful now
• more pattern matching and recursiveness everywhere

July 9

• fix termination condition of reduced_dist.ml
• have precise as default ubuntu distribution
• do not allow to investigate an already installable package

July 10

• milestone: show all cycles in a graph
• add copyright info (LGPL3+)

July 11

• advice to use dose tools in README

July 16

• write apt_pkg based python filter script replacing grep-dctrl

July 17

• use Depsolver.listcheck more often
• add dist_graph.ml
• refactor dependency graph code into its own module

July 18

• improve package selection for reduced_dist.ml
• improve performance of cycle enumeration code

July 20

• implement buildprofile support into dose3

July 22

• let dist_graph.ml use commandline arguments

July 23

• allow dose3 to generate source package lists without Build- Depends Conflicts -Indep

July 29

• implement crosscompile support into dose3

Results

Readme There is not yet a writeup on how everything works and how all the pieces of the code work together but the current README file provides a short introduction on how to use the tools.

• build and runtime dependencies
• compile instructions
• execution examples for each program
• step by step guide how to analyze the dependency situation
• explanation of general commandline options

A detailed writeup about the inner workings of everything will be part of a final documentation stage.

License All my code is now released under the terms of the LGPL either version 3, or (at your option) any later version. A special linking exception is made to the license which can be read at the top of the provided COPYING file. The exception is necessary because Ocaml links statically, which means that without that exception, the conditions of distribution would basically equal GPL3+.

reduced_dist.ml Especially the Debian archive is huge and one might want to work on a reduced selection of packages first. Having a smaller selection of the archive would be significantly faster and would also not add thousands of packages that are not important for an extended base system. I call a reduced distribution a set of source packages A and a set of binary packages B which fulfill the following three properties:

• all source packages A must be buildable with only binary packages B being available
• all binary packages B except for architecture:all packages must be buildable from source packages A

The set of binary packages B and source packages A can be retrieved using the reduced_dist program. It allows to either build the most minimal reduced distribution or one that includes a certain package selection. To filter out the package control stanzas for a reduced distribution from a full distribution, I originally used a call to grep-dctrl but later replaced that by a custom python script called filter-packages.py. This script uses python-apt to filter Packages and Sources files for a certain package selection.

dist_graph.ml It soon became obvious that there were not many independent dependency cycle situation but just one big scc that would contain 96% of the packages that are involved in build dependency cycles. Therefor it made sense to write a program that does not iteratively build the dependency graph starting from a single package, but which builds a dependency graph for a whole archive.

Cycles I can now enumerate all cycles in the dependency graph. I covered the theoretical part in another blog post and wrote an email about the achievement to the list. Both resources contain more links to the respective sourcecode. The dependency graph generated for Debian Sid has 39486 vertices. It has only one central scc with 1027 vertices and only eight other scc with 2 to 7 vertices. All the other source and binary packages in the dependency graph for the archive are degenerate components of length one. Obtaining the attached result took 4 hours on my machine (Core i5 @ 2.53GHz). 1.5 h of that were needed to build the dependency graph, the other 2.5 hours were needed to run johnson's algorithm on the result. Memory consumption of the program was at about 700 MB. It is to my joy that apparently the runtime of the cycle finding algorithm for a whole Debian Sid repository as well as the memory requirements are within orders of magnitude that are justifiable when being run on off-the-shelf hardware. It must also be noted that nothing is optimized for performance yet. A list of all cycles in Debian Sid up to length 4 can be retrieved from this email. This cycle analysis assumes that only essential packages, build-essential and dependencies and debhelper are available. Debhelper is not an essential or build-essential package but 79% of the archive build-depends on it. The most interesting cycles are probably those of length 2 that need packages that they build themselves. Noticeable examples for these situations are vala, python, mlton, fpc, sbcl and ghc. Languages seem love to need themselves to be built.

Buildprofiles There is a long discussion of how to encode staged build dependency information in source packages. While the initial idea was to use Build-Depends-StageN fields, this solution would duplicate large parts of the Build-Depends field, which leads to bitrot as well as it is inflexible to possible other build "profiles". To remedy the situation it was proposed to use field names like Build-Depends[stage1 embedded] but this would also duplicate information and would break with the rfc822 format of package description files. A document maintained by Guillem Jover gives even more ideas and details. Internally, Patrick and me decided for another idea of Guillem Jover to annotate staged build dependencies. The format reads like:

Build-Depends: huge (>= 1.0) [i386 arm] <!embedded !bootstrap>, tiny

So each build profile would follow a dependency in <> "brackets" an have a similar format as architecture options. Patrick has a patch for dpkg that implements this functionality while I patched dose3.

Dropping Build-Depends-Indep and Build-Conflicts-Indep When representing the dependencies of a source package, dose3 concatenates its Build-Depends and Build-Depends-Indep dependency information. So up to now, a source package could only be compiled, if it manages to compile all of its binary packages including architecture:all packages. But when bootstrapping a new architecture, it should be sufficient to only build the architecture dependent packages and therefor to only build the build-arch target in debian/rules and not the build-indep target. Only considering the Build-Depends field and dismissing the Build-Depends-Indep field, reduced the main scc from 1027 vertices to 979 vertices. The amount of cycles up to length four reduced from 276 to 206. Especially the cycles containing gtk-doc-tools, doxygen, debiandoc-sgml and texlive-latex-base got much less. Patrick managed to add a Build-Depends-Indep field to four packages so far which reduced the scc further by 14 vertices down to 965 vertices. So besides staged build dependencies and cross building there is now a third method that can be applied to break dependency cycles: add Build-Depends-Indep information to them or update existing information. I submitted a list of packages that have a binary-indep and/or a build-indep target in their debian/rules to the list. I also submitted a patch for dose3 to be able to specify to ignore Build-Depends-Indep and Build-Conflicts-Indep information.

Dose3 crossbuilding So far I only looked at dependency situations in the native case. While the native case contains a huge scc of about 1000 packages, the dependency situation will be much nicer when cross building. But dose3 was so far not able to simulate cross building of source packages. I wrote a patch that implements this functionality and will allow me to write programs that help analyze the cross-situation as well.

Debconf Presentation Wookey was giving a talk at debconf12 for which I was supplying him with slides. The slides in their final version can be downloaded here

Future Patrick maintains a list of "weak" build dependencies. Those are dependencies that are very likely to be droppable in either a staged build or using Build-Depends-Indep. I must make use of this list to make it easier to find packages that can easily be removed of their dependencies. I will have to implement support for resolving the main scc using staged build dependencies. Since it is unlikely that Patrick will be fast enough in supplying me with modified packages, I will need to create myself a database of dummy packages. Another open task is to allow to analyze the crossbuilding dependency situation. What I'm currently more or less waiting on is the inclusion of my patches into dose3 as well as a decision on the buildprofile format. More people need to discuss about it until it can be included into tools as well as policy. Every maintainer of a package can help making bootstrapping easier by making sure that as many dependencies as possible are part of the Build-Depends-Indep field.

The big news for ASoC in 3.5 is the first two changes here which are pretty major features for the subsystem:

• Dynamic PCM support, allowing support for SoCs with internal routing through components with tight sequencing and formatting constraints within their internal paths or where there are multiple components connected with CPU managed DMA controllers inside the SoC.
• Greatly improved support for direct digital links between off-SoC devices, providing a much simpler way of connecting things like digital basebands to CODECs.
• Much more fine grained and robust locking, cleaning up some of the confusion that crept in with multi-component.
• CPU support for nVidia Tegra 30 I2S and audio hub controllers and ST-Ericsson MSP I2S controllers
• New CODEC drivers for Cirrus CS42L52, Freescale MC13783, LAPIS Semiconductor ML26124 and Texas Instruments LM49453.

good news of the RCBW week: more & more patches from people I haven't seen before in the BTS. keep them coming!

• #632604 src:libatomic-ops: "libatomic-ops: FTBFS on i386"
  apply patch from upstream git repo, upload to DELAYED/2, then fixed in a maintainer upload
• #644409 rapidsvn: "rapidsvn SEGV with Subversion 1.7"
  add upstream patch, do a QA upload
• #650060 snort: "snort: FTBFS when built with build-arch"
  send patch to the BTS, NMU uploaded by periapt
• #674329 src:gimp-dimage-color: "gimp-dimage-color: FTBFS: gimpmatrix.h:23:2: error: #error "Only <libgimpmath/gimpmath.h> can be included directly.""
  apply patch from Sebastian Ramacher, upload to DELAYED/2
• #676194 src:ruby-xmlparser: "ruby-xmlparser: FTBFS: xmlparser.c:1783:2: error: format not a string literal and no format arguments [-Werror=format-security]"
  add patch from Andreas St hrk, upload to DELAYED/2
• #676205 src:ruby-ldap: "ruby-ldap: FTBFS: sslconn.c:103:7: error: format not a string literal and no format arguments [-Werror=format-security]"
  add patch from Johannes Brandst tter, upload to DELAYED/2
• #677702 src:libdevice-cdio-perl: "libdevice-cdio-perl: FTBFS with libcdio 0.83"
  finalize, and update patches for new upstream release, uploaded by dam (pkg-perl)
• #678556 rapidsvn: "rapidsvn: please drop Build-Depends: libserf-0-0-dev"
  drop build dependency, do a QA upload
• #678772 src:libpoe-component-client-http-perl: "libpoe-component-client-http-perl: FTBFS: tests failed"
  add patch (pkg-perl)