Jarkko Sakkinen
jarkko
Edited 2 days ago
Backported more features from my bootc OS to my kernel testing harness: https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd-test.git/. It now runs on a bootc container and is booted by a UKI kernel.
It also has scripts/build.sh, which is developed and tested to work with Apple's own container manager called, well, 'container' (brew install container && brew services start container).
Getting the build to work on top of Apple's own container manager makes a three year old M2 Pro blazingly fast build server that outputs both x86 and ARM images in no time (much faster than any PC I have).
On a Mac:
CONTAINER=container CONTAINER_MEMORY=16G CONTAINER_CPUS=4 scripts/build.sh
It's a big over-engineered image for the purpose but I've had these features as a side-effect of my OS project so why not collect the fruits and create a more realistic environment.
Right and image has Podman and toolbx, if in the middle of testing something needs to be built :-)
#buildroot #bootc #linux #kernel
It also has scripts/build.sh, which is developed and tested to work with Apple's own container manager called, well, 'container' (brew install container && brew services start container).
Getting the build to work on top of Apple's own container manager makes a three year old M2 Pro blazingly fast build server that outputs both x86 and ARM images in no time (much faster than any PC I have).
On a Mac:
CONTAINER=container CONTAINER_MEMORY=16G CONTAINER_CPUS=4 scripts/build.sh
It's a big over-engineered image for the purpose but I've had these features as a side-effect of my OS project so why not collect the fruits and create a more realistic environment.
Right and image has Podman and toolbx, if in the middle of testing something needs to be built :-)
#buildroot #bootc #linux #kernel
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Jarkko Sakkinen
jarkko
Edited 2 days ago
I learned Odin's full grammar in 2-3 hours (there's a pretty nice Kindle book about it). Now I know it well enough already that I can even write it even to paper with a carbon pen.
This is what I appreciate also in C, and is a non-existent quality in any other modern systems language.
This is what I appreciate also in C, and is a non-existent quality in any other modern systems language.
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Jarkko Sakkinen
jarkko
I've got hooked into Odin. It makes more sense for a C programmer than any other new systems language.
I'm also in process of rewriting ReadSeek CLI. If I had been aware of it I would have used from the get go.
It's easier to maintain in long-term because Odin, like C, does really change.
I'm also in process of rewriting ReadSeek CLI. If I had been aware of it I would have used from the get go.
It's easier to maintain in long-term because Odin, like C, does really change.
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Jarkko Sakkinen
jarkko
I think this a nice Buildroot tweak:
❯ make sdk BOARD=puu_amd64 && make sdk BOARD=puu_arm64
Using cached SDK: /home/jarkko/.cache/puu-os/sdk/2026.05.1/linux-x86_64/puu_amd64/c4bc9208266dda1f4180340abcb7eead8df05982c6728d8e6d665d0e14ef64b9/puu_amd64-c4bc9208266dda1f4180340abcb7eead8df05982c6728d8e6d665d0e14ef64b9_sdk-buildroot.tar.gz
Using cached SDK: /home/jarkko/.cache/puu-os/sdk/2026.05.1/linux-x86_64/puu_arm64/ff5125e9c7b2ea625d15d7fb0eccfede5100f82872964e49d8b0e6de93189dd9/puu_arm64-ff5125e9c7b2ea625d15d7fb0eccfede5100f82872964e49d8b0e6de93189dd9_sdk-buildroot.tar.gz
SDK cache does a lot to compilation times.
:-)
❯ make sdk BOARD=puu_amd64 && make sdk BOARD=puu_arm64
Using cached SDK: /home/jarkko/.cache/puu-os/sdk/2026.05.1/linux-x86_64/puu_amd64/c4bc9208266dda1f4180340abcb7eead8df05982c6728d8e6d665d0e14ef64b9/puu_amd64-c4bc9208266dda1f4180340abcb7eead8df05982c6728d8e6d665d0e14ef64b9_sdk-buildroot.tar.gz
Using cached SDK: /home/jarkko/.cache/puu-os/sdk/2026.05.1/linux-x86_64/puu_arm64/ff5125e9c7b2ea625d15d7fb0eccfede5100f82872964e49d8b0e6de93189dd9/puu_arm64-ff5125e9c7b2ea625d15d7fb0eccfede5100f82872964e49d8b0e6de93189dd9_sdk-buildroot.tar.gz
SDK cache does a lot to compilation times.
:-)
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Jarkko Sakkinen
jarkko
i reinitiated my audio project from early year with odin as it is easy to import and migrate from C and somehow find entertaining. it's like programming basic :-)
and also optimal language similarly as C for just programming without special tools or LLMs given that you can keep it in your head.
so with that angle slowly breathing life to that project...
and also optimal language similarly as C for just programming without special tools or LLMs given that you can keep it in your head.
so with that angle slowly breathing life to that project...
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Jarkko Sakkinen
jarkko
Edited 4 days ago
I'm most proud of my fat ARM test builds in linux-tpmdd-test :-) Actually felt achieving something. Same disk image covers generic EFI, RPI400 and RPI3B.
RPI3B probably does not have a modern supplement. It has that broken TrustZone, which makes it great
RPI3B probably does not have a modern supplement. It has that broken TrustZone, which makes it great
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Jarkko Sakkinen
jarkko
Found out ways to bring down Puu OS's 8 hour compilation time:
1. SDK caching. I.e. bootstrapped BR toolchains to ~/.cache/puu-os/sdk/...
2. Flatpak preseeding. I.e. install GNOME Web etc. to the live image but not as part of bootc.
The latter is enormous win as the compilation of WebKit is over 50% of overall compilation time. It's sick.
1. SDK caching. I.e. bootstrapped BR toolchains to ~/.cache/puu-os/sdk/...
2. Flatpak preseeding. I.e. install GNOME Web etc. to the live image but not as part of bootc.
The latter is enormous win as the compilation of WebKit is over 50% of overall compilation time. It's sick.
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Jarkko Sakkinen
jarkko
Edited 4 days ago
I don't regret writing my coding agent plugins because they give me platform to influence matters to less slop.
E.g., I can say "dude, 3000+ lines in a commit is not cool". If I did not have this platform, my words would not have as much weight.
I like to go always where things happen; like it or dislike it, and shuffle :-)
E.g., I can say "dude, 3000+ lines in a commit is not cool". If I did not have this platform, my words would not have as much weight.
I like to go always where things happen; like it or dislike it, and shuffle :-)
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Jarkko Sakkinen
jarkko
"phindex exports photos from local, SFTP, or iOS sources and normalizes their names into one naming convention. It supports JPEG, PNG, and Canon CR2 files."
I realized that NPM is quite nice way to distribute your C tools, which are not otherwise distro packaged :-)
https://www.npmjs.com/package/@jarkkojs/phindex
Originally made with Python in 2011, and more recently upgraded to C. MacOS binary available some day...
I realized that NPM is quite nice way to distribute your C tools, which are not otherwise distro packaged :-)
https://www.npmjs.com/package/@jarkkojs/phindex
Originally made with Python in 2011, and more recently upgraded to C. MacOS binary available some day...
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Jarkko Sakkinen
jarkko
I've been thinking to tackle Rust's LGPL issue for one C library as follows:
1. Compile C library as DSO
2. Embed DSO inside Rust crate (e.g., include_bytes!).
3. Wire shims around DSO calls.
Have not tried it yet but it does not sound that bad.
1. Compile C library as DSO
2. Embed DSO inside Rust crate (e.g., include_bytes!).
3. Wire shims around DSO calls.
Have not tried it yet but it does not sound that bad.
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Jarkko Sakkinen
jarkko
Edited 4 days ago
I've slowly converted all my coding agent tools to do all CI local (i.e. neither .github and .gitlab), and evacuating them to Gitlab :-) Can't stand Github for a second... 2/3 done. Landstrip is next up.
It seems to come as a suprise that my tools are not vibecoded. That's why they are great. It's not hard to compete in that marketplace tbh.
It seems to come as a suprise that my tools are not vibecoded. That's why they are great. It's not hard to compete in that marketplace tbh.
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Jarkko Sakkinen
jarkko
Lot's of Puu OS related work backported for the benefit of linux-tpmdd-test: https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd-test.git/
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Jarkko Sakkinen
jarkko
Edited 7 days ago
I like some AI companies. E.g., I think what Poolside is doing is amazing. I'd take job from there any day if I had chance (extremely unlikely). https://poolside.ai/
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Jarkko Sakkinen
jarkko
Google on AGI: HR updates.
I skipped straight to the science part and this is what I get.
I guess this is Google's version of "IT ESCAPED FROM THE LAB 🤯 🤖 👽 I'd guess one could translate "AGI" as "our next generation models have already missed time-to-market".
I skipped straight to the science part and this is what I get.
I guess this is Google's version of "IT ESCAPED FROM THE LAB 🤯 🤖 👽 I'd guess one could translate "AGI" as "our next generation models have already missed time-to-market".
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Jarkko Sakkinen
jarkko
Going to Switzerland (business trip) end of month, and visiting at MiniDebConf.
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Jarkko Sakkinen
jarkko
I neither want to be a social warrior nor left behind thus I'm taking corrective steps; starting with this beautiful backdrop :-)
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Jarkko Sakkinen
jarkko
Edited 7 days ago
Model-Control-Protocol (MCP) is in the literal sense of the word same as if Python replaced modules with daemons and function calls with a request-response-protocol sitting behind either TCP or UDS socket.
It only exist because Claude Code is exceptionally bad.
It only exist because Claude Code is exceptionally bad.
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Jarkko Sakkinen
jarkko
Edited 7 days ago
I still remember the days when Rust was sold as the cure for the inherent complexity and obscurity of C++ ;-)
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