Another minor update 0.3.14 for our nanotime package is now on CRAN, and has compiled for r2u (and will have to wait to be uploaded to Debian until dependency bit64 has been updated there). nanotime relies on the RcppCCTZ package (as well as the RcppDate package for additional C++ operations) and offers efficient high(er) resolution time parsing and formatting up to nanosecond resolution, using the bit64 package for the actual integer64 arithmetic. Initially implemented using the S3 system, it has benefitted greatly from a rigorous refactoring by Leonardo who not only rejigged nanotime internals in S4 but also added new S4 types for periods, intervals and durations. This release has been driven almost entirely by Michael, who took over as bit64 maintainer and has been making changes there that have an effect on us downstream . He reached out with a number of PRs which (following occassional refinement and smoothing) have all been integrated. There are no user-facing changes, or behavioural changes or enhancements, in this release. The NEWS snippet below has the fuller details.

Changes in version 0.3.14 (2026-04-22)

• Tests were refactored to use NA_integer64_ (Michael Chirico in #149 and Dirk in #156)
• nanoduration was updated for changes in nanotime 4.8.0 (Michael Chirico in #152 fixing #151)
• Use of as.integer64(keep.names=TRUE) has been refactored (Michael Chirico in #154 fixing #153)
• In tests, nanotime is attached after bit64; this still needs a better fix (Michael Chirico in #155)
• The package now has a hard dependency on the just released bit64 version 4.8.0 (or later)

Thanks to my CRANberries, there is a diffstat report for this release. More details and examples are at the nanotime page; code, issue tickets etc at the GitHub repository and all documentation is provided at the nanotime documentation site.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can now sponsor me at GitHub. You can also sponsor my Tour de Shore 2026 ride in support of the Maywood Fine Arts Center.

Vertical rhythm aligns lines to a consistent spacing cadence down the page. It creates a predictable flow for the eye to follow. Thanks to the rlh CSS unit, vertical rhythm is now easier to implement for text.¹ But illustrations and tables can disrupt the layout. The amateur typographer in me wants to follow Bringhurst s wisdom:

Headings, subheads, block quotations, footnotes, illustrations, captions and other intrusions into the text create syncopations and variations against the base rhythm of regularly leaded lines. These variations can and should add life to the page, but the main text should also return after each variation precisely on beat and in phase. Robert Bringhurst, The Elements of Typographic Style

Text Three factors govern vertical rhythm: font size, line height and margin or padding. Let s set our baseline with an 18-pixel font and a 1.5 line height:

html  
  font-size: 112.5%;
  line-height: 1.5;
 
h1, h2, h3, h4  
  font-size: 100%;
 
html, body,
h1, h2, h3, h4,
p, blockquote,
dl, dt, dd, ol, ul, li  
  margin: 0;
  padding: 0;
 

CSS Values and Units Module Level 4 defines the rlh unit, equal to the computed line height of the root element. All browsers support it since 2023.² Use it to insert vertical spaces or to fix the line height when altering font size:³

h1, h2, h3, h4  
  margin-top: 2rlh;
  margin-bottom: 1rlh;
 
h1  
  font-size: 2.5rem;
  line-height: 2rlh;
 
h2  
  font-size: 1.5rem;
  line-height: 1rlh;
 
h3  
  font-size: 1.25rem;
  line-height: 1rlh;
 
p, blockquote, pre  
  margin-top: 1rlh;
 
aside  
  font-size: 0.875rem;
  line-height: 1rlh;
 

We can check the result by overlaying a grid⁴ on the content:

Using CSS rlh unit to set vertical space works well for text. You can display the grid using Ctrl+Shift+G.

If a child element uses a font with taller intrinsic metrics, it may stretch the line s box beyond the configured line height.⁵ A workaround is to reduce the line height to 1. The glyphs overflow but don t push the line taller.

code, kbd  
  line-height: 1;
 

Responsive images Responsive images are difficult to align on the grid because we don t know their height. CSS Rhythmic Sizing Module Level 1 introduces the block-step property to adjust the height of an element to a multiple of a step unit. But most browsers don t support it yet. With JavaScript, we can add padding around the image so it does not disturb the vertical rhythm:

const targets = document.querySelectorAll(".lf-media-outer");
const adjust = (el, height) =>  
  const rlh = parseFloat(getComputedStyle(document.documentElement).lineHeight);
  const padding = Math.ceil(height / rlh) * rlh - height;
  el.style.padding =  $ padding / 2 px 0 ;
 ;
targets.forEach((el) => adjust(el, el.clientHeight));

The image is snapped to the grid thanks to the additional padding computed with JavaScript. 216 is divisible by 27, our line height in this example.

As the image is responsive, its height can change. We need to wrap a resize observer around the adjust() function:

const ro = new ResizeObserver((entries) =>  
  for (const entry of entries)  
    const height = entry.contentBoxSize[0].blockSize;
    adjust(entry.target, height);
   
 );
for (const target of targets)  
  ro.observe(target);
 

Tables Table cells could set 1rlh as their height but they would feel constricted. Using 2rlh wastes too much space. Instead, we use incremental leading: we align one in every five lines.

table  
  border-spacing: 2px 0;
  border-collapse: separate;
  th  
    padding: 0.4rlh 1em;
   
  td  
    padding: 0.2rlh 0.5em;
   
 

To align the elements after the table, we need to add some padding. We can either reuse the JavaScript code from images or use a few lines of CSS that count the regular rows and compute the missing vertical padding:

table:has(tbody tr:nth-child(5n):last-child)     padding-bottom: 0.2rlh;  
table:has(tbody tr:nth-child(5n+1):last-child)   padding-bottom: 0.8rlh;  
table:has(tbody tr:nth-child(5n+2):last-child)   padding-bottom: 0.4rlh;  
table:has(tbody tr:nth-child(5n+3):last-child)   padding-bottom: 0  
table:has(tbody tr:nth-child(5n+4):last-child)   padding-bottom: 0.6rlh;  

A header cell has twice the padding of a regular cell. With two regular rows, the total padding is 2 2 0.2+2 0.4=1.6. We need to add 0.4rlh to reach 2rlh of extra vertical padding across the table.

One line out of five is aligned to the grid. Additional padding is added after the table to not break the vertical rhythm. 405 is divisible by 27, our line height in this example.

---

None of this is necessary. But once you start looking, you can t unsee it. Until browsers implement CSS Rhythmic Sizing, a bit of CSS wizardry and a touch of JavaScript is enough to pull it off. The main text now returns after each intrusion precisely on beat and in phase.

---

1. See Vertical rhythm using CSS lh and rlh units by Pawe Grzybek.
2. For broader compatibility, you can replace 2rlh with calc(var(--line-height) * 2rem) and set the --line-height custom property in the :root pseudo-class. I wrote a simple PostCSS plugin for this purpose.
3. It would have been nicer to compute the line height with calc(round(up, calc(2.4rem / 1rlh), 0) * 1rlh). Unfortunately, typed arithmetic is not supported by Firefox yet. Moreover, browsers support round() only since 2024. Instead, I coded a PostCSS plugin for this as well.
4. The following CSS code defines a grid tracking the line height:

   body  
     position: relative;
    
   body::after  
     content: "";
     position: absolute;
     inset: 0;
     z-index: 9999;
     background: linear-gradient(180deg, #c8e1ff99 1px, transparent 1px);
     background-size: 20px 1rlh;
     pointer-events: none;
    
   

5. See Deep dive CSS: font metrics, line-height and vertical-align by Vincent De Oliveira.

Armadillo is a powerful and expressive C++ template library for linear algebra and scientific computing. It aims towards a good balance between speed and ease of use, has a syntax deliberately close to Matlab, and is useful for algorithm development directly in C++, or quick conversion of research code into production environments. RcppArmadillo integrates this library with the R environment and language and is widely used by (currently) 1263 other packages on CRAN, downloaded 45.7 million times (per the partial logs from the cloud mirrors of CRAN), and the CSDA paper (preprint / vignette) by Conrad and myself has been cited 683 times according to Google Scholar. This versions updates to the 15.2.5 and 15.2.6 upstream Armadillo releases from, respectively, two and five days ago. The package has already been updated for Debian, and built for r2u. When we ran the reverse-dependency check for 15.2.5 at the end of last week, one package failed. I got in touch with the authors, filed an issue, poked some more, isolated the one line that caused an example to fail and right then 15.2.6 came out fixing just that. It was after all an upstream issue. We used to ran these checks before Conrad made a release, he now skips this and hence needed a quick follow-up release. It can happen. The other big change is that this R package release phases out the dual support for both C++14 or newer (as in current Armadillo) along with a C++11 fallback for more slowly updating packages. I am happy to say that after over eight months of this managed transition (during which CRAN expulsed some laggard packages that were not moving in from C++11) we are now at all packages using C++14 or newer which is nice. And I will take this as an opportunity to stress that one can in fact manage a disruptive API change this way as we just demonstrated. Sadly, R Core does not seem to have gotten that message and rollout of this package was also still a little delayed because of the commotion created by the last minute API changes preceding the R 4.6.0 release later this week. Smaller changes in the package are a switch in pdf vignette production to the Rcpp::asis() driver, and a higher-precision computation in rmultinom() (matching a change made in R-devel during last week in its use of Kahan summation). All detailed changes since the last CRAN release follow.

Changes in RcppArmadillo version 15.2.6-1 (2026-04-20)

• Upgraded to Armadillo release 15.2.6 (Medium Roast Deluxe)
  • Ensure internally computed tolerances are not NaN
• The rmultinom deploys 'Kahan summation' as R-devel does now.

Changes in RcppArmadillo version 15.2.5-1 [github-only] (2026-04-18)

• Upgraded to Armadillo release 15.2.5 (Medium Roast Deluxe)
  • Fix for handling NaN elements in .is_zero()
  • Fix for handling NaN in tolerance and conformance checks
  • Faster handling of diagonal views and submatrices with one row>

• Sunset the C++11 fallback of including Armadillo 14.6.3 (#504 closing #503)
• The vignettes have refreshed bibliographies, and are now built using the Rcpp::asis vignette builder (#506)
• One rmultinom test is skipped under R-devel which has switched to a higher precisions calc

Courtesy of my CRANberries, there is a diffstat report relative to previous release. More detailed information is on the RcppArmadillo page. Questions, comments etc should go to the rcpp-devel mailing list off the Rcpp R-Forge page.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can sponsor me at GitHub. You can also sponsor my Tour de Shore 2026 ride in support of the Maywood Fine Arts Center.

I recently released version 0.3.0 of my recipe manager application Kookbook find it in git in KDE Invent or as released tarballs in https://download.kde.org/stable/kookbook/ Changes since last time is more or less Minor bugfixes and a Qt6 port nothing as such noteworthy unless you aim to get rid of Qt5 on your system. so what is kookbook?
It is a simple recipe viewer that works with semi-structured markdown. More details can be seen in the quite old 0.1.0 announcement At some point I should do a 10 recipe example collection, but my personal collection is in danish, so I m not sure it is going to be useful. Unless someone will donate me some handfuls of pre-formatted recipes, I will happily announce it.

Review: Collision Course, by Michelle Diener

Series:	Class 5 #6
Publisher:	Eclipse
Copyright:	November 2024
ISBN:	1-7637844-0-1
Format:	Kindle
Pages:	289

Collision Course is the sixth novel in the Class 5 science fiction series and the first that doesn't use the Dark X naming convention. There are lots of spoilers in this story for the earlier books, but you don't have to remember all the details of previous events. Like the novella, Dark Ambitions, this novel returns to Rose, Sazo, and Dav instead of introducing another Earth woman and Class 5 ship. In Dark Class, Ellie discovered an interesting artifact of a previously-unknown space-faring civilization. Rose, Sazo, and Dav are on their way to make first contact when, during a routine shuttle flight between the Class 5 and Dav's Grih military ship, Rose is abducted. The aliens they came to contact have an aggressive, leverage-based negotiating strategy. They're also in the middle of a complicated war with more sides than are readily apparent. What I liked most about Dark Horse, the first book of this series and our introduction to Rose, was the revealed ethical system and a tense plot that hinged primarily on establishing mutual trust when there were excellent reasons for the characters to not trust each other. As the series has continued, I think the plots have become more complicated but the ethical dilemmas and revealing moments of culture shock have become less common. That is certainly true of Collision Course; this is science fiction as thriller, with a complex factional conflict, a lot of events, more plot reversals than the earlier books, but also less ethics and philosophy. I'm not sure if this is a complaint. I kind of miss the ethics and philosophy, but Diener also hasn't had much new to say for the past few books. The plot of Collision Course is quite satisfyingly twisty for a popcorn-style science fiction series. I was kept guessing about the merits of some of the factions quite late into the book, although admittedly I was in the mood for light entertainment and was not trying too hard to figure out where the book was going. I did read nearly the entire book in one sitting and stayed up until 2am to finish it, which is a solid indication that something Diener was doing worked. I do have quibbles, though. One is that the ending is a bit unsatisfying. Like Sazo, I was getting quite annoyed at the people capturing (and recapturing) Rose and would have enjoyed somewhat more decisive consequences. Also, and here I have to be vague to avoid spoilers, I was expecting a bit more of a redemption arc for one of the players in the multi-sided conflict. The ending I did get was believable but rather sad, and I wish Diener had either chosen a different outcome (this is light happily-ever-after science fiction, after all) or wrestled more directly with the implications. There were a bit too many "wait, one more thing" ending reversals and not quite enough emotional payoff for me. The other quibble is that Collision Course was a bit too damsel in distress for this series. Rose is pregnant, which Diener uses throughout the book as a way to raise the stakes of the plot and also make Rose more annoyed but also less capable than she was in her earlier novel. Both Sazo and Dav are in full heroic rescue mode, and while Diener still ensures Rose is primarily responsible for her own fate, there is some "military men attempt to protect the vulnerable woman" here. One of the things I like about this series is that it does not use that plot, so while the balance between Rose rescuing herself and other people rescuing her is still tilted towards Rose, I would have liked this book more if Rose were in firmer control of events. I will mostly ignore the fact that a human and a Grih sexually reproducing makes little to no biological sense, since Star Trek did similar things routinely and it's an established genre trope. But I admit that it still annoys me a bit that the alien hunk is essentially human except that he's obsessed with Rose's singing and has pointy ears. Diener cares about Rose's pregnancy a lot more than I did, which added to my mild grumpiness at how often it came up. Overall, this was fine. I prefer a bit more of a protagonist discovering how powerful she is by making ingenious use of the ethical dilemmas her captors have trapped themselves in, and a bit less of Rose untangling a complicated political situation by getting abducted by every player serially, but it still kept the pages turning. Any book that is sufficiently engrossing for me to read straight through is working at some level. Collision Course was highly readable, undemanding, and distracting, which is what I was looking for when I read it. I would put it about middle of pack in the series. If Rose's pregnancy is more interesting to you than it was to me, that might push it a bit higher. If you have gotten this far in the series, you will probably enjoy this, although it does feel like Diener is running out of new things to say about this universe. That's unfortunate given the number of threads about AI sentience and rights that could still be followed, but I think tracing them properly would require more philosophical meat than Diener intends for these books. Which is why the next book I grabbed was a Culture novel. Currently this is the final book in the Class 5 series, but there is no inherent reason why Diener couldn't write more of them. Rating: 7 out of 10

A while ago, CommBank started asking for MFA confirmation on its mobile app for every NetBank login on a browser. Previously, there was an option to use SMS for MFA, which isn t as secure as I would like, but it was at least usable. Since I m switching away from Android to Mobian and won t be able to use the CommBank app for much longer, I applied for a physical NetCode token. The hardware is made by Digipass and looks disposable. It is a small, battery powered gadget with a screen and a button. When pressed, it shows a temporary NetCode for authentication. Such a NetCode is required both for NetBank logins and approving online transactions. The letter that came with it has the wrong link for activation, the correct link is under NetBank -> Settings -> NetCode (under the Security section) To apply for a physical token, call the NetBank team, mention you can t use the app and need a physical NetCode token, and make sure they actually submit your request for a token. It took me 2 calls to get them to ship me a token. The hardware is free of charge but can only be applied for via phone call; unfortunately staff members at my local branch are unable to do anything in relation to NetBank. I was told privately by a CommBank employee that they are deprecating the hardware token in favor of the mobile app, I hope that won t happen anytime soon, or that they add support for passkeys before they do. The last time I checked, the CommBank app was LineageOS-friendly, but I don t want to configure WayDroid just to do online banking. PayID, the thing that allows you to receive payment via a phone number or email address, is not compatible with the hardware token, and existing PayID will be silently deactivated if you use hardware token. This looks to be an artificial restriction; I don t see why it has to be this way. Regular CommBank mobile app sessions will also be de-activated once the hardware token is activated (I was told so but my sessions weren t deactivated until I wiped my Android phone), and you won t be able to sign into mobile app again until you manually disable the NetCode token. Online banking has been getting progressively more invasive and anti-user over the last decade, from demanding remote attestation to requiring real time location data, each time locking certain features when those demands are not satisfied; all based on the flawed assumptions that everyone owns a phone running a certain flavor of iOS or Android, and has it ready all the time. I m not sure what can be done to reverse this trend, but on the personal level I will use NetBank less and go back to cash.

It s true processing data from software defined radios can be a bit complex which tends to keep all but the most grizzled experts and bravest souls from playing with it. While I wouldn t describe myself as either, I will say that I ve stuck with it for longer than most would have expected of me. One of the biggest takeaways I have from my adventures with software defined radio is that there s a lot of cool crossover opportunity between RF and nearly every other field of engineering. Fairly early on, I decided on a very light metadata scheme to track SDR captures, called rfcap. rfcap has withstood my test of time, and I can go back to even my earliest captures and still make sense of what they are IQ format, capture frequencies, sample rates, etc. A huge part of this was the simplicity of the scheme (fixed-lengh header, byte-aligned to supported capture formats), which made it roughly as easy to work with as a raw file of IQ samples. However, rfcap has a number of downsides. It s only a single, fixed-length header. If the frequency of operation changed during the capture, that change is not represented in the capture information. It s not possible to easily represent mulit-channel coherent IQ streams, and additional metadata is condemned to adjacent text files.

ARF (Archive of RF) A few years ago, I needed to finally solve some of these shortcomings and tried to see if a new format would stick. I sat down and wrote out my design goals before I started figuring out what it looked like. First, whatever I come up with must be capable of being streamed and processed while being streamed. This includes streaming across the network or merely written to disk as it s being created. No post-processing required. This is mostly an artifact of how I ve built all my tools and how I intereact with my SDRs. I use them extensively over the network (both locally, as well as remotely by friends across my wider lan). This decision sometimes even prompts me to do some crazy things from time to time. I need actual, real support for multiple IQ channels from my multi-channel SDRs (Ettus, Kerberos/Kracken SDR, etc) for playing with things like beamforming. My new format must be capable of storing multiple streams in a single capture file, rather than a pile of files in a directory (and hope they re aligned). Finally, metadata must be capable of being stored in-band. The initial set of metadata I needed to formalize in-stream were Frequency Changes and Discontinuities. Since then, ARF has grown a few more. After getting all that down, I opted to start at what I thought the simplest container would look like, TLV (tag-length-value) encoded packets. This is a fairly well trodden path, and used by a bunch of existing protocols we all know and love. Each ARF file (or stream) was a set of encoded packets (sometimes called data units in other specs). This means that unknown packet types may be skipped (since the length is included) and additional data can be added after the existing fields without breaking existing decoders.

tag

flags

length

value

Heads up! Once this is posted, I'm not super likely to update this page. Once this goes out, the latest stable copy of the ARF spec is maintained at draft-tagliamonte-arf-00.txt. This page may quickly become out of date, so if you're actually interested in implementing this, I've put a lot of effort into making the draft comprehensive, and I plan to maintain it as I edit the format.

Unlike a traditional TLV structure, I opted to add flags to the top-level packet. This gives me a bit of wiggle room down the line, and gives me a feature that I like from ASN.1 a critical bit. The critical bit indicates that the packet must be understood fully by implementers, which allows future backward incompatible changes by marking a new packet type as critical. This would only really be done if something meaningfully changed the interpretation of the backwards compatible data to follow.

Flag	Description
0x01	Critical (tag must be understood)

Within each Packet is a tag field. This tag indicates how the contents of the value field should be interpreted.

Tag ID	Description
0x01	Header
0x02	Stream Header
0x03	Samples
0x04	Frequency Change
0x05	Timing
0x06	Discontinuity
0x07	Location
0xFE	Vendor Extension

In order to help with checking the basic parsing and encoding of this format, the following is an example packet which should parse without error.

 00, // tag (0; no subpacket is 0 yet)
 00, // flags (0; no flags)
 00, 00 // length (0; no data)
 // data would go here, but there is none

Additionally, throughout the rest of the subpackets, there are a few unique and shared datatypes. I document them all more clearly in the draft, but to quickly run through them here too:

UUID This field represents a globally unique idenfifer, as defined by RFC 9562, as 16 raw bytes.

Frequency Data encoded in a Frequency field is stored as microhz (1 Hz is stored as 1000000, 2 Hz is stored as 2000000) as an unsigned 64 bit integer. This has a minimum value of 0 Hz, and a maximum value of 18446744073709551615 uHz, or just above 18.4 THz. This is a bit of a tradeoff, but it s a set of issues that I would gladly contend with rather than deal with the related issues with storing frequency data as a floating point value downstream. Not a huge factor, but as an aside, this is also how my current generation SDR processing code (sparky) stores Frequency data internally, which makes conversion between the two natural.

IQ samples ARF supports IQ samples in a number of different formats. Part of the idea here is I want it to be easy for capturing programs to encode ARF for a specific radio without mandating a single iq format representation. For IQ types with a scalar value which takes more than a single byte, this is always paired with a Byte Order field, to indicate if the IQ scalar values are little or big endian.

ID	Name	Description
0x01	f32	interleaved 32 bit floating point scalar values
0x02	i8	interleaved 8 bit signed integer scalar values
0x03	i16	interleaved 16 bit signed integer scalar values
0x04	u8	interleaved 8 bit unsigned integer scalar values
0x05	f64	interleaved 64 bit floating point scalar values
0x06	f16	interleaved 16 bit floating point scalar values

Header Each ARF file must start with a specific Header packet. The header contains information about the ARF stream writ large to follow. Header packets are always marked as critical .

magic

flags

start

guid

site guid

#st

In order to help with checking the basic parsing and encoding of this format, the following is an example header subpacket (when encoded or decoded this will be found inside an ARF packet as described above) which should parse without error, with known values.

00, 00, 00, fa, de, dc, ab, 1e, // magic
00, 00, 00, 00, 00, 00, 00, 00, // flags
18, 27, a6, c0, b5, 3b, 06, 07, // start time (1740543127)

// guid (fb47f2f0-957f-4545-94b3-75bc4018dd4b)
fb, 47, f2, f0, 95, 7f, 45, 45,
94, b3, 75, bc, 40, 18, dd, 4b,

// site_id (ba07c5ce-352b-4b20-a8ac-782628e805ca)
ba, 07, c5, ce, 35, 2b, 4b, 20,
a8, ac, 78, 26, 28, e8, 05, ca

Stream Header Immediately after the arf Header, some number of Stream Headers follow. There must be exactly the same number of Stream Header packets as are indicated by the num streams field of the Header. This has the nice effect of enabling clients to read all the stream headers without requiring buffering of unread packets from the stream.

id

flags

fmt

bo

rate

freq

guid

site

In order to help with checking the basic parsing and encoding of this format, the following is an example stream header subpacket (when encoded or decoded this will be found inside an ARF packet as described above) which should parse without error, with known values.

00, 01, // id (1)
00, 00, 00, 00, 00, 00, 00, 00, // flags
01, // format (float32)
01, // byte order (Little Endian)
00, 00, 01, d1, a9, 4a, 20, 00, // rate (2 MHz)
00, 00, 5a, f3, 10, 7a, 40, 00, // frequency (100 MHz)

// guid (7b98019d-694e-417a-8f18-167e2052be4d)
7b, 98, 01, 9d, 69, 4e, 41, 7a,
8f, 18, 16, 7e, 20, 52, be, 4d,

// site_id (98c98dc7-c3c6-47fe-bc05-05fb37b2e0db)
98, c9, 8d, c7, c3, c6, 47, fe,
bc, 05, 05, fb, 37, b2, e0, db,

Samples Block of IQ samples in the format indicated by this stream s format and byte_order field sent in the related Stream Header.

id

iq samples

In order to help with checking the basic parsing and encoding of this format, the following is an samples subpacket (when encoded or decoded this will be found inside an ARF packet as described above). The IQ values here are notional (and are either 2 8 bit samples, or 1 16 bit sample, depending on what the related Stream Header was).

01, // id
ab, cd, ab, cd, // iq samples

Frequency Change The center frequency of the IQ stream has changed since the Stream Header or last Frequency Change has been sent. This is useful to capture IQ streams that are jumping around in frequency during the duration of the capture, rather than starting and stopping them.

id

frequency

In order to help with checking the basic parsing and encoding of this format, the following is a frequency change subpacket (when encoded or decoded this will be found inside an ARF packet as described above).

01, // id
00, 00, b5, e6, 20, f4, 80, 00 // frequency (200 MHz)

Discontinuity Since the last Samples packet for this stream, samples have been dropped or not encoded to this stream. This can be used for a stream that has dropped samples for some reason, a large gap (radio was needed for something else), or communicating iq snippits .

id

In order to help with checking the basic parsing and encoding of this format, the following is a discontinuity subpacket (when encoded or decoded this will be found inside an ARF packet as described above).

01, // id

Location Up-to-date location as of this moment of the IQ stream, usually from a GPS. This allows for in-band geospatial information to be marked in the IQ stream. This can be used for all sorts of things (detected IQ packet snippits aligned with a time and location or a survey of rf noise in an area)

flags

sys

lat

long

el

accuracy

The sys field indicates the Geodetic system to be used for the provided latitude, longitude and elevation fields. The full list of supported geodetic systems is currently just WGS84, but in case something meaningfully changes in the future, it d be nice to migrate forward. Unfortunately, being a bit of a coward here, the accuracy field is a bit of a cop-out. I d really rather it be what we see out of kinematic state estimation tools like a kalman filter, or at minimum, some sort of ellipsoid. This is neither of those - it s a perfect sphere of error where we pick the largest error in any direction and use that. Truthfully, I can t be bothered to model this accurately, and I don t want to contort myself into half-assing something I know I will half-ass just because I know better.

System	Description
0x01	WGS84 - World Geodetic System 1984

In order to help with checking the basic parsing and encoding of this format, the following is a location subpacket (when encoded or decoded this will be found inside an ARF packet as described above).

00, 00, 00, 00, 00, 00, 00, 00, // flags
01, // system (wgs84)
3f, f3, be, 76, c8, b4, 39, 58, // latitude (1.234)
40, 02, c2, 8f, 5c, 28, f5, c3, // longitude (2.345)
40, 59, 00, 00, 00, 00, 00, 00, // elevation (100)
40, 24, 00, 00, 00, 00, 00, 00 // accuracy (10)

Vendor Extension In addition to the fields I put in the spec, I expect that I may need custom packet types I can t think of now. There s all sorts of useful data that could be encoded into the stream, so I d rather there be an officially sanctioned mechanism that allows future work on the spec without constraining myself. Just an example, I ve used a custom subpacket to create test vectors, the data is encoded into a Vendor Extension, followed by the IQ for the modulated packet. If the demodulated data and in-band original data don t match, we ve regressed. You could imagine in-band speech-to-text, antenna rotator azimuth information, or demodulated digital sideband data (like FM HDR data) too. Or even things I can t even think of!

id

data

In order to help with checking the basic parsing and encoding of this format, the following is a vendor extension subpacket (when encoded or decoded this will be found inside an ARF packet as described above).

// extension id (b24305f6-ff73-4b7a-ae99-7a6b37a5d5cd)
b2, 43, 05, f6, ff, 73, 4b, 7a,
ae, 99, 7a, 6b, 37, a5, d5, cd,

// data (0x01, 0x02, 0x03, 0x04, 0x05)
01, 02, 03, 04, 05

Tradeoffs The biggest tradeoff that I m not entirely happy with is limiting the length of a packet to u16 65535 bytes. Given the u8 sample header, this limits us to 8191 32 bit sample pairs at a time. I wound up believing that the overhead in terms of additional packet framing is worth it because always encoding 4 byte lengths felt like overkill, and a dynamic length scheme ballooned codepaths in the decoder that I was trying to keep as easy to change as possible as I worked with the format.

The nineteenth release of the qlcal package arrivied at CRAN just now, and has already been built for r2u. This version synchronises with QuantLib 1.42 released this week. qlcal delivers the calendaring parts of QuantLib. It is provided (for the R package) as a set of included files, so the package is self-contained and does not depend on an external QuantLib library (which can be demanding to build). qlcal covers over sixty country / market calendars and can compute holiday lists, its complement (i.e. business day lists) and much more. Examples are in the README at the repository, the package page, and course at the CRAN package page. This releases updates to the 2025 holidays for China, Singapore, and Taiwan. The full details from NEWS.Rd follow.

Changes in version 0.1.1 (2026-04-15)

• Synchronized with QuantLib 1.42 released two days ago
• Calendar updates for China, Singapore, Taiwan

Courtesy of my CRANberries, there is a diffstat report for this release. See the project page and package documentation for more details, and more examples.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can sponsor me at GitHub. You can also sponsor my Tour de Shore 2026 ride in support of the Maywood Fine Arts Center.

Debian Contributions: 2026-03 Contributing to Debian is part of Freexian s mission. This article covers the latest achievements of Freexian and their collaborators. All of this is made possible by organizations subscribing to our Long Term Support contracts and consulting services.

Debusine projects in Google s Summer of Code While Freexian initiated Debusine, and is investing a lot of resources in the project, we manage it as a true free software project that can and should have a broader community. We always had documentation for new contributors and we aim to be reactive with them when they interact via the issue tracker or via merge requests. We decided to put those intentions under stress tests by proposing five projects for Google s Summer of Code as part of Debian s participation in that program. Given that at least 11 candidates managed to get their merge request accepted in the last 30 days (interacting with the development team is part of the pre-requisites to apply to Google Summer of Code projects these days), the contributing experience must not be too bad. If you want to try it out, we maintain a list of quick fixes that are accessible to newcomers. And as always, we welcome your feedback!

Debian CI: incus backend and upgrade to Bootstrap 5, by Antonio Terceiro debci 3.14 was released on March 4th, with a followup 3.14.1 release with regression fixes a few days afterwards. Those releases were followed by new development and maintenance work that will provide extra capabilities and stability to the platform. This month saw the initial version of an incus backend land in Debian CI. The transition into the new backend will be done carefully so as to not disrupt testing migration. Each package will be running jobs with both the current lxc backend and with incus. Packages that have the same result on both backends will be migrated over, and packages that exhibit different results will be investigated further, resulting in bug reports and/or other communication with the maintainers. On the frontend side, the code has been ported to Bootstrap 5 over from the now ancient Bootstrap 3. This need has been originally reported back in 2024 based on the lack of security support for Bootstrap 3. Beyond improving maintainability, this upgrade also enables support for dark mode in debci, which is still work in progress. Both updates mentioned in this section will be available in a following debci release.

Salsa CI maintenance by Santiago Ruano Rinc n et al. Santiago reviewed some Salsa CI issues and reviewed associated merge requests. For example, he investigated a regression (#545), introduced by the move to sbuild, on the use of extra repositories configured as .source files; and reviewed the MR (!712) that fixes it. Also, there were conflicts with changes made in debci 3.14 and debci 3.14.1 (those updates are mentioned above), and different people have contributed to fix the subsequent issues, in a long-term way. This includes Rapha l who proposed MR !707 and who also suggested Antonio to merge the Salsa CI patches to avoid similar errors in the future. This happened shortly after. Those fixes finally required the unrelated MR !709, which will prevent similar problems when building images. To identify bugs related to the autopkgtest support in the backport suites as early as possible, Santiago proposed MR !708. Finally, Santiago, in collaboration with Emmanuel Arias also had exchanges with GSoC candidates for the Salsa CI project, including the contributions they have made as merge requests. It is important to note that there are several very good candidates interested in participating. Thanks a lot to them for their work so far!

Miscellaneous contributions

• Rapha l reported a zim bug affecting Debian Unstable users, which was already fixed in git apparently. He could thus cherry-pick the fix and update the package in Debian Unstable.
• Carles created a new page on the InstallingDebianOn in Debian Wiki.
• Carles submitted translation errors in the debian-installer Weblate.
• Carles, using po-debconf-manager, improved Catalan translations: reviewed and submitted 3 packages. Also improved error handling when forking or submitting an MR if the fork already existed.
• Carles kept improving check-relations: code base related general improvements (added strict typing, enabled pre-commit). Also added DebPorts support, virtual packages support and added commands for reporting missing relations and importing bugs from bugs.debian.org.
• Antonio handled miscellaneous Salsa support requests.
• Antonio improved the management of MiniDebConf websites by keeping all non-secret settings in git and fixed exporting these sites as static HTML.
• Stefano uploaded routine updates to hatchling, python-mitogen, python-virtualenv, python-discovery, dh-python, pypy3, python-pipx, and git-filter-repo.
• Faidon uploaded routine updates to crun, libmaxminddb, librdkafka, lowdown, platformdirs, python-discovery, sphinx-argparse-cli, tox, tox-uv.
• Stefano and Santiago continued to help with DebConf 26 preparations.
• Stefano reviewed some contributions to debian-reimbursements and handled admin for reimbursements.debian.net.
• Stefano attended the Debian Technical Committee meeting.
• Helmut sent 8 patches for cross build failures.
• Building on the work of postmarketOS, Helmut managed to cross build systemd for musl in rebootstrap and sent several patches in the process.
• Helmut reviewed several MRs of Johannes Schauer Marin Rodrigues expanding support for DPKG_ROOT to support installing hurd.
• Helmut incorporated a final round of feedback for the Multi-Arch documentation in Debian policy, which finally made it into unstable together with documentation of Build-Profiles.
• In order to fix python-memray, Helmut NMUed libunwind generally disabling C++ exception support as being an incompatible duplication of the gcc implementation. Unfortunately, that ended up breaking suricata on riscv64. After another NMU, python-memray finally migrated.
• Thorsten uploaded new upstream versions of epson-inkjet-printer-escpr and sane-airscan. He also fixed a packaging bug in printer-driver-oki. As of systemd 260.1-1 the configuration of lpadmin has been added to the sysusers.d configuration. All printing packages can now simply depend on the systemd-sysusers package and don t have to take care of its creation in maintainer scripts anymore.
• In collaboration with Emmanuel Arias, Santiago had exchanges with GSoC candidates and reviewed the proposals of the Linux livepatching GSoC 2026 project.
• Colin helped to fix CVE-2026-3497 in openssh and CVE-2026-28356 in multipart.
• Colin upgraded tango and pytango to new upstream releases and packaged pybind11-stubgen (needed for pytango), thanks to a Freexian customer. Tests of reproducible builds revealed that pybind11-stubgen didn t generate imports in a stable order; this is now fixed upstream.
• Lucas fixed CVE-2025-67733 and CVE-2026-21863 affecting src:valkey in unstable and testing. Also reviewed the same fixes targeting stable proposed by Peter Wienemann.
• Faidon worked with upstream and build-dep Debian maintainers on resolving blockers in order to bring pyHanko into Debian, starting with the adoption of python-pyhanko-certvalidator. pyHanko is a suite for signing and stamping PDF files, and one of the few libraries that can be leveraged to sign PDFs with eIDAS Qualified Electronic Signatures.
• Anupa co-organized MiniDebConf Kanpur and attended the event with many others from all across India. She handled the accommodation arrangements along with the registration team members, worked on the budget and expenses. She was also a speaker at the event.
• Lucas helped with content review/schedule for the MiniDebConf Campinas. Thanks Freexian for being a Gold sponsor!
• Lucas organized and took part in a one-day in-person sprint to work on Ruby 3.4 transition. It was held in a coworking space in Brasilia - Brazil on April 6th. There were 5 DDs and they fixed multiple packages FTBFSing against Ruby 3.4 (coming to unstable soon hopefully). Lucas has been postponing a blog post about this sprint since then :-)

A maintenance release 0.3.13 of the anytime package arrived on CRAN today, sticking with the roughly yearly schedule we have now. Binaries for r2u have been built already. The package is fairly feature-complete, and code and functionality remain mature and stable. anytime is a very focused package aiming to do just one thing really well: to convert anything in integer, numeric, character, factor, ordered, input format to either POSIXct (when called as anytime) or Date objects (when called as anydate) and to do so without requiring a format string as well as accomodating different formats in one input vector. See the anytime page, the GitHub repo for a few examples, the nice pdf vignette, and the beautiful documentation site for all documentation. This release was triggered by a bizarre bug seen on elementary os 8. For reason anytime was taking note on startup where it runs, and used a small and simply piece of code reading /etc/os-release when it exists. We assumed sane content, but this particular operating system and releases managed to have a duplicate entry throwing us spanner. So now this code is robust to duplicates, and no longer executed on each startup but as needed which is a net improvement. We also switched the vignette to being deployed by the new Rcpp::asis() driver. The short list of changes follows.

Changes in anytime version 0.3.13 (2026-04-14)

• Continuous integration has received minor updates
• The vignette now use the Rcpp::asis() driver, and references have been refreshed
• Stateful 'where are we running' detection is now more robust, and has been moved from running on each startup to a cached 'as needed' case

Courtesy of my CRANberries, there is also a diffstat report of changes relative to the previous release. The issue tracker tracker off the GitHub repo can be use for questions and comments. More information about the package is at the package page, the GitHub repo, in the vignette, and at the documentation site.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can now sponsor me at GitHub. You can also sponsor my Tour de Shore 2026 ride in support of the Maywood Fine Arts Center.

At last, I can run my own large language model artificial idiocy generator at home on a Debian testing host using Debian packages directly from the Debian archive. After months of polishing the llama.cpp, whisper.cpp and ggml packages, and their dependencies, I was very happy to see today that they all entered Debian testing this morning. Several release-critical issues in dependencies have been blocking the migration for the last few weeks, and now finally the last one of these has been fixed. I would like to extend a big thanks to everyone involved in making this happen. I've been running home-build editions of whisper.cpp and llama.cpp packages for a while now, first building from the upstream Git repository and later, as the Debian packaging progressed, from the relevant Salsa Git repositories for the ROCM packages, GGML, whisper.cpp and llama.cpp. The only snag with the official Debian packages is that the JavaScript chat client web pages are slightly broken in my setup, where I use a reverse proxy to make my home server visible on the public Internet while the included web pages only want to communicate with localhost / 127.0.0.1. I suspect it might be simple to fix by making the JavaScript code dynamically look up the URL of the current page and use that to determine where to find the API service, but until someone fixes BTS report #1128381, I just have to edit /usr/share/llama.cpp-tools/llama-server/themes/simplechat/simplechat.js every time I upgrade the package. I start my server like this on my machine with a nice AMD GPU (donated to me as a Debian developer by AMD two years ago, thank you very much):

  LC_ALL=C llama-server \
    -ngl 256  \
    -c $(( 42 * 1024)) \
    --temp 0.7 \
    --repeat_penalty 1.1 \
    -n -1 \
    -m Qwen3-Coder-30B-A3B-Instruct-Q5_K_S.gguf

It only takes a few minutes to load the model for the first time and prepare a nice API server for me at https://my.reverse.proxy.example.com:8080/v1/, available (note, this sets up the server up without authentication; use a reverse proxy with authentication if you need it) for all the API clients I care to test. I switch models regularly to test different new ones, the Qwen3-Coder one just happen to be the one I use at the moment. Perhaps these packages is something for you to have fun with too? As usual, if you use Bitcoin and want to show your support of my activities, please send Bitcoin donations to my address 15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b.

I ve been using the Furilabs FLX1s phone [1] as my daily driver for 6 weeks, it s a decent phone, not as good as I hoped but good enough to use every day and rely on for phone calls about job interviews etc. I intend to keep using it as my main phone and as a platform to improve phone software in Debian as you really can t effectively find bugs unless you use the platform for important tasks. Support Problems I previously wrote about the phone after I received it without a SIM caddy on the 13th of Jan. I had a saga with support about this, on the 16th of Jan one support person said that they would ship it immediately but didn t provide a tracking number or any indication of when it would arrive. On the 5th of Feb I contacted support again and asked how long it would be, the new support person seemed to have no record of my previous communication but said that they would send it. On the 17th of Feb I made another support request including asking for a way of direct communication as the support email came from an address that wouldn t accept replies, I was asked for a photo showing where the problem is. The support person also said that they might have to send a replacement phone! The last support request I sent included my disappointment at the time taken to resolve the issue and the proposed solution of replacing the entire phone (why have two international shipments of a fragile and expensive phone when a single letter with a cheap SIM caddy would do?). I didn t receive a reply but the SIM caddy arrived on the 2nd of Mar. Here is a pic of the SIM caddy and the package it came in: One thing that should be noted is that some of the support people seemed to be very good at their jobs and they were all friendly. It was the system that failed here, turning a minor issue of a missing part into a 6 week saga. Furilabs needs to do the following to address this issue:

1. Make it possible to reply directly to a message from a support person. Accept email with a custom subject to sort it, give a URL for a web form, anything. Collating discussions with a customer allows giving better support while taking less time for the support people.
2. Have someone monitor every social media address that is used by the company. When someone sends a support request in a public Mastodon post it indicates that something has gone wrong and you want to move quickly to resolve it.
3. Take care of the little things, like sending a tracking number for every parcel. If it s something too small for a parcel (the SIM caddy could have fit in a regular letter) then just tell the customer what date it was posted and where it was posted from so they have some idea of when it will arrive.

This is not just a single failure of Furilabs support, it s a systemic failure of their processes. Problems I Will Fix Unless Someone Beats Me to it Here are some issues I plan to work on. Smart Watch Support I need to port one of the smart watch programs to Debian. Also I want to make one of them support the Colmi P80 [2]. A smart watch significantly increases the utility of a phone even though IMHO they aren t doing nearly all the things that they could and should do. When we get Debian programs talking to the PineTime it will make a good platform for development of new smart phone and OS features. Nextcloud I have ongoing issues of my text Nextcloud installation on a Debian VM not allowing connection from the Linux desktop app (as packaged in Debian) and from the Android client (from f-droid). The desktop client works with a friend s Nextcloud installation on Ubuntu so I may try running it on an Ubuntu VM I run while waiting for the Debian issue to get resolved. There was a bug recently fixed in Nextcloud that appears related so maybe the next release will fix it. For the moment I ve been running without these features and I call and SMS people from knowing their number or just returning calls. Phone calls generally aren t very useful for me nowadays except when applying for jobs. If I could deal with recruiters and hiring managers via video calls then I would consider just not having a phone number. Wifi IPv6 Periodically IPv6 support just stops working, I can t ping the gateway. I turn wifi off and on again and it works. This might be an issue with my wifi network configuration. This might be an issue with the way I have configured my IPv6 networking, although that problem doesn t happen with any of my laptops. Chatty Sorting Chatty is the program for SMS that is installed by default (part of the phosh/phoc setup), it also does Jabber. Version 0.8.7 is installed which apparently has some Furios modifications and it doesn t properly support sorting SMS/Jabber conversations. Version 0.8.9 from Debian sorts in the same way as most SMS and Jabber programs with the most recent at the top. But the Debian version doesn t support Jabber (only SMS and Matrix). When I went back to the Furilabs version of Chatty it still sorted for a while but then suddenly stopped. Killing Chatty (not just closing the window and reopening it) seems to make it sort the conversations sometimes. Problems for Others to Fix Here are the current issues I have starting with the most important. Important The following issues seriously reduce the usability of the device. Hotspot The Wifi hotspot functionality wasn t working for a few weeks, this Gitlab issue seems to match it [3]. It started working correctly for a day and I was not sure if an update I applied fixed the bug or if it s some sort of race condition that worked for this boot and will return next time I reboot it. Later on I rebooted it and found that it s somewhat random whether it works or now. Also while it is mostly working it seemed to stop working about every 25 minutes or so and I had to turn it off and on again to get it going. On another day it went to a stage where it got repeated packet loss when I pinged the phone as a hotspot from my laptop. A pattern of 3 ping responses and 3 Destination Host Unreachable messages was often repeated. I don t know if this is related to the way Android software is run in a container to access the hardware. 4G Reliability Sometimes 4G connectivity has just stopped, sometimes I can stop and restart the 4G data through software to fix it and sometimes I need to use the hardware switch. I haven t noticed this for a week or two so there is a possibility that one fix addressed both Hotspot and 4G. One thing that I will do is setup monitoring to give an alert on the phone if it can t connect to the Internet. I don t want it to just quietly stop doing networking stuff and not tell me! On-screen Keyboard The compatibility issues of the GNOME and KDE on-screen keyboards are getting me. I use phosh/phoc as the login environment as I want to stick to defaults at first to not make things any more difficult than they need to be. When I use programs that use QT such as Nheko the keyboard doesn t always appear when it should and it forgets the setting for word completion (which means spelling correction). The spelling correction system doesn t suggest replacing dont with don t which is really annoying as a major advantage for spelling checkers on touch screens is inserting an apostrophy. An apostrophy takes at least 3* longer than a regular character and saving that delay makes a difference to typing speed. The spelling correction doesn t correct two words run together. Medium Priority These issues are ongoing annoyances. Delay on Power Button In the best case scenario this phone has a much slower response to pressing the power button than the Android phones I tested (Huawei Mate 10 Pro and Samsung Galaxy Note 9) and a much slower response than my recollection of the vast majority of Android phones I ve ever used. For testing pressing buttons on the phones simultaneously resulted in the Android phone screens lighting up much sooner. Something like 200ms vs 600ms I don t have a good setup to time these things but it s very obvious when I test. In a less common case scenario (the phone having been unused for some time) the response can be something like 5 seconds. The worst case scenario is something in excess of 20 seconds. For UI designers, if you get multiple press events from a button that can turn the screen on/off please make your UI leave the screen on and ignore all the stacked events. Having the screen start turning on and off repeatedly when the phone recovers and processes all the button presses isn t good, especially when each screen flash takes half a second. Notifications Touching on a notification for a program often doesn t bring it to the foreground. I haven t yet found a connection between when it does and when it doesn t. Also the lack of icons in the top bar on the screen to indicate notifications is annoying, but that seems to be an issue of design not the implementation. Charge Delay When I connect the phone to a power source there is a delay of about 22 seconds before it starts to charge. Having it miss 22 seconds of charge time is no big deal, having to wait 22 seconds to be sure it s charging before leaving it is really annoying. Also the phone makes an audible alert when it gets to 0% charge which woke me up one night when I had failed to push the USB-C connector in hard enough. This phone requires a slightly deeper connector than most phones so with some plugs it s easy to not quite insert them far enough. Torch aka Flash The light for the torch or flash for camera is not bright at all. In a quick test staring into the light from 40cm away wasn t unpleasant compared to my Huawei Mate 10 Pro which has a light bright enough that it hurts to look at it from 4 meters away. Because of this photos at night are not viable, not even when photographing something that s less than a meter away. The torch has a brightness setting which doesn t seem to change the brightness, so it seems likely that this is a software issue and the brightness is set at a low level and the software isn t changing it. Audio When I connect to my car the Lollypop player starts playing before the phone directs audio to the car, so the music starts coming from the phone for about a second. This is an annoying cosmetic error. Sometimes audio playing pauses for no apparent reason. It doesn t support the phone profile with Bluetooth so phone calls can t go through the car audio system. Also it doesn t always connect to my car when I start driving, sometimes I need to disable and enable Bluetooth to make it connect. When I initially set the phone up Lollypop would send the track name when playing music through my car (Nissan LEAF) Bluetooth connection, after an update that often doesn t happen so the car doesn t display the track name or whether the music is playing but the pause icon works to pause and resume music (sometimes it does work). About 30 seconds into a phone call it switches to hands-free mode while the icon to indicate hands-free is not highlighted, so I have to press the hands-free button twice to get it back to normal phone mode. Low Priority I could live with these things remaining as-is but it s annoying. Ticket Mode There is apparently some code written to display tickets on screen without unlocking. I want to get this working and store screen-caps of the Android barcode screens of the different loyalty cards so I can scan them without unlocking. My threat model does not include someone trying to steal my phone to get a free loaf of bread on the bakery loyalty program. Camera The camera app works with both the back and front cameras, which is nice, and sadly based on my experience with other Debian phones it s noteworthy. The problem is that it takes a long time to take a photo, something like a second after the button is pressed long enough for you to think that it just silently took a photo and then move the phone. The UI of the furios-camera app is also a little annoying, when viewing photos there is an icon at the bottom left of the screen for a video camera and an icon at the bottom right with a cross. Which every time makes me think record videos and leave this screen not return to taking photos and delete current photo . I can get used to the surprising icons, but being so slow is a real problem. GUI App Installation The program for managing software doesn t work very well. It said that there were two updates for Mesa package needed, but didn t seem to want to install them. I ran flatpak update as root to fix that. The process of selecting software defaults to including non-free, and most of the available apps are for desktop/laptop with no way to search for phone/tablet apps. Generally I think it s best to just avoid this and use apt and flatpak directly from the command-line. Being able to ssh to my phone from a desktop or laptop is good! Android Emulation The file /home/furios/.local/share/andromeda/data/system/uiderrors.txt is created by the Andromeda system which runs Android apps in a LXC container and appears to grow without end. After using the phone for a month it was 3.5G in size. The disk space usage isn t directly a problem, out of the 110G storage space only 17G is used and I don t have a need to put much else on it, even if I wanted to put backups of /home from my laptop on it when travelling that would still leave plenty of free space. But that sort of thing is a problem for backing up the phone and wasting 3.5G out of 110G total is a fairly significant step towards breaking the entire system. Also having lots of logging messages from a subsystem that isn t even being used is a bad sign. I just tried using it and it doesn t start from either the settings menu or from the f-droid icon. Android isn t that important to me as I want to get away from the proprietary app space so I won t bother trying this any more. Unfixable Problems Unlocking After getting used to fingerprint unlocking going back to a password is a pain. I think that the hardware isn t sufficient for modern quality face recognition that can t be fooled by a photo and there isn t fingerprint hardware. When I first used an Android phone using a pin to unlock didn t seem like a big deal, but after getting used to fingerprint unlock it s a real drag to go without. This is a real annoyance when doing things like checking Wikipedia while watching TV. This phone would be significantly improved with a fingerprint sensor or a camera that worked well enough for face unlock. Plasma Mobile According to Reddit Plasma Mobile (KDE for phones) doesn t support Halium and can never work on this phone because of it [4]. This is one of a number of potential issues with the phone, running on hardware that was never designed for open OSs is always going to have issues. Wifi MAC Address The MAC keeps changing on reboot so I can t assign a permanent IPv4 address to the phone. It appears from the MAC prefix of 00:08:22 that the network hardware is made in InPro Comm which is well known for using random addresses in the products it OEMs. They apparently have one allocation of 2^24 addresses and each device randomly chooses a MAC from that range on boot. In the settings for a Wifi connection the Identity tab has a field named Cloned Address which can be set to Stable for SSID that prevents it from changing and allows a static IP address allocation from DHCP. It s not ideal but it works. Network Manager can be configured to have a permanent assigned MAC address for all connections or for just some connections. In the past for such things I have copied MAC addresses from ethernet devices that were being discarded and used them for such things. For the moment the Stable for SSID setting does what I need but I will consider setting a permanent address at some future time. Docks Having the ability to connect to a dock is really handy. The PinePhonePro and Librem5 support it and on the proprietary side a lot of Samsung devices do it with a special desktop GUI named Dex and some Huawei devices also have a desktop version of the GUI. It s unfortunate that this phone can t do it. The Good Things It s good to be able to ssh in to my phone, even if the on-screen keyboard worked as well as the Android ones it would still be a major pain to use when compared to a real keyboard. The phone doesn t support connecting to a dock (unlike Samsung phones I ve used for which I found Dex to be very useful with a 4K monitor and proper keyboard) so ssh is the best way to access it. This phone has very reliable connections to my home wifi. I ve had ssh sessions from my desktop to my phone that have remained open for multiple days. I don t really need this, I ve just forgotten to logout and noticed days later that the connection is still running. None of the other phones running Debian could do that. Running the same OS on desktop and phone makes things easier to test and debug. Having support for all the things that Linux distributions support is good. For example none of the Android music players support all the encodings of audio that comes from YouTube so to play all of my music collection on Android I would need to transcode most of them which means either losing quality, wasting storage space, or both. While Lollypop plays FLAC0, mp3, m4a, mka, webm, ogg, and more. Conclusion This is a step towards where I want to go but it s far from the end goal. The PinePhonePro and Librem5 are more open hardware platforms which have some significant benefits. But the battery life issues make them unusable for me. Running Mobian on a OnePlus 6 or Droidian on a Note 9 works well for the small tablet features but without VoLTE. While the telcos have blocked phones without VoLTE data devices still work so if recruiters etc would stop requiring phone calls then I could make one of them an option. The phone works well enough that it could potentially be used by one of my older relatives. If I could ssh in to my parents phones when they mess things up that would be convenient. I ve run this phone as my daily driver since the 3rd of March and it has worked reasonably well. 6 weeks compared to my previous use of the PinePhonePro for 3 days. This is the first time in 15 years that a non-Android phone has worked for me personally. I have briefly used an iPhone 7 for work which basically did what it needed to do, it was at the bottom of the pile of unused phones at work and I didn t want to take a newer iPhone that could be used by someone who s doing more than the occasional SMS or Slack message. So this is better than it might have been, not as good as I hoped, but a decent platform to use it while developing for it.

• [1] https://etbe.coker.com.au/2026/01/19/furilabs-flx1s/
• [2] https://etbe.coker.com.au/2025/08/19/colmi-p80-smartwatch/
• [3] https://github.com/FuriLabs/issue-tracker/issues/216
• [4] https://tinyurl.com/27vkulbr