Michal
@arathunku.com
https://arathunku.com
🧙♂️💻 #SRE & Platform things #Elixir #ElixirLang
🐕🐾 #luna #dog owner
🏃🏃 #running
🇵🇱 🧳🚗➡️ 🇩🇪
🧙♂️💻 #SRE & Platform things #Elixir #ElixirLang
🐕🐾 #luna #dog owner
🏃🏃 #running
🇵🇱 🧳🚗➡️ 🇩🇪
Damn, lots of nice updates on Cargo side! blog.rust-lang.org/2026/01/21/c...
> Security Tab
> Trusted Publishing
> Publication Time in Index
> Security Tab
> Trusted Publishing
> Publication Time in Index
crates.io: development update | Rust Blog
Empowering everyone to build reliable and efficient software.
blog.rust-lang.org
January 21, 2026 at 10:09 AM
Damn, lots of nice updates on Cargo side! blog.rust-lang.org/2026/01/21/c...
> Security Tab
> Trusted Publishing
> Publication Time in Index
> Security Tab
> Trusted Publishing
> Publication Time in Index
> ExDoc v0.40 adds a "Copy Markdown" button that copies the current page to the clipboard. It also generates a "llms.txt" document that will be found at the root of every Elixir package with links to Markdown docs.
by @josevalim.bsky.social @ xitter #elixirlang
xcancel.com/josevalim/st...
by @josevalim.bsky.social @ xitter #elixirlang
xcancel.com/josevalim/st...
xcancel.com
January 21, 2026 at 10:05 AM
> ExDoc v0.40 adds a "Copy Markdown" button that copies the current page to the clipboard. It also generates a "llms.txt" document that will be found at the root of every Elixir package with links to Markdown docs.
by @josevalim.bsky.social @ xitter #elixirlang
xcancel.com/josevalim/st...
by @josevalim.bsky.social @ xitter #elixirlang
xcancel.com/josevalim/st...
We received a letter with information about an article online and how to open it. Germany 2026
January 21, 2026 at 8:35 AM
We received a letter with information about an article online and how to open it. Germany 2026
github.com/nix-communit... #TIL nix is amazing
> You stick a , in front of a command to run it from whatever location it happens to occupy in nixpkgs without really thinking about it.
> You stick a , in front of a command to run it from whatever location it happens to occupy in nixpkgs without really thinking about it.
GitHub - nix-community/comma: Comma runs software without installing it. [maintainers=@Artturin,@burke,@DavHau]
Comma runs software without installing it. [maintainers=@Artturin,@burke,@DavHau] - nix-community/comma
github.com
January 20, 2026 at 3:01 PM
github.com/nix-communit... #TIL nix is amazing
> You stick a , in front of a command to run it from whatever location it happens to occupy in nixpkgs without really thinking about it.
> You stick a , in front of a command to run it from whatever location it happens to occupy in nixpkgs without really thinking about it.
Reposted by Michal
Reposted by Michal
Hey #ElixirLang & #Ruby fam, I got laid off this last Friday and am looking for the next adventure! If anyone has any opportunities, feel free to reach out!
January 19, 2026 at 7:03 PM
Hey #ElixirLang & #Ruby fam, I got laid off this last Friday and am looking for the next adventure! If anyone has any opportunities, feel free to reach out!
Everyone enjoyed the night view, and here I am, getting my top score in sleep points with 4 REM phases, and now resting HR. Baby slept 10h too 😂
January 20, 2026 at 9:24 AM
Everyone enjoyed the night view, and here I am, getting my top score in sleep points with 4 REM phases, and now resting HR. Baby slept 10h too 😂
Reposted by Michal
Typst is used to create the official Swift reference. Check the repo for a great example on how to create long-form documentation with Typst.
📚Check out this beautiful contribution by
@peterfriese.dev: a typeset PDF of The Swift Programming Language book, our official reference to Swift, produced with Typst. Download and read the PDF here: github.com/peterfriese/...
@typstapp.bsky.social
@peterfriese.dev: a typeset PDF of The Swift Programming Language book, our official reference to Swift, produced with Typst. Download and read the PDF here: github.com/peterfriese/...
@typstapp.bsky.social
January 19, 2026 at 4:48 PM
Typst is used to create the official Swift reference. Check the repo for a great example on how to create long-form documentation with Typst.
AWS NLB accepts a config that results in random timeouts when requests come from within EKS/VPC
> Disabling Client-IP Preservation: Everything started working fine after disabling Client-IP Preservation.
Literally, we had 40% success rate on probes... top quality networking
> Disabling Client-IP Preservation: Everything started working fine after disabling Client-IP Preservation.
Literally, we had 40% success rate on probes... top quality networking
Intermittent timeouts connecting to service in same EKS cluster via Internal NLB · Issue #2505 · aws/amazon-vpc-cni-k8s
What happened: We get intermittent timeouts when pinging services in EKS cluster. This only happens if the caller and callee are in the same EKS cluster and traffic goes through private NLB. We hav...
github.com
January 19, 2026 at 2:26 PM
AWS NLB accepts a config that results in random timeouts when requests come from within EKS/VPC
> Disabling Client-IP Preservation: Everything started working fine after disabling Client-IP Preservation.
Literally, we had 40% success rate on probes... top quality networking
> Disabling Client-IP Preservation: Everything started working fine after disabling Client-IP Preservation.
Literally, we had 40% success rate on probes... top quality networking
Open Source project doesn't have any AI policy, still submit a patch? Create a request for AI policy?
It's small, thoroughly reviewed by human (but without full knowledge of the project), tested both manually and automatically patch.
It's small, thoroughly reviewed by human (but without full knowledge of the project), tested both manually and automatically patch.
January 19, 2026 at 5:55 AM
Open Source project doesn't have any AI policy, still submit a patch? Create a request for AI policy?
It's small, thoroughly reviewed by human (but without full knowledge of the project), tested both manually and automatically patch.
It's small, thoroughly reviewed by human (but without full knowledge of the project), tested both manually and automatically patch.
Daemon & Freedom by Daniel Suarez done. Great audiobooks, highly recommend. I hope someone creates 2 movies out of them, augmented with new AI developments
January 18, 2026 at 8:54 AM
Daemon & Freedom by Daniel Suarez done. Great audiobooks, highly recommend. I hope someone creates 2 movies out of them, augmented with new AI developments
German kids songs are something else! m.youtube.com/watch?v=3wfr...
Mathi - Der miese fiese Riese - Offizielles Video
YouTube video by Mathi-Musik
m.youtube.com
January 17, 2026 at 3:56 PM
German kids songs are something else! m.youtube.com/watch?v=3wfr...
Only 1 result was unexpected, guess which one?
multi-core CPU on M1 vs 7840U
arathunku.com/b/2026-01-17...
multi-core CPU on M1 vs 7840U
arathunku.com/b/2026-01-17...
@arathunku - ThinkPad X13 gen4 vs 5950X vs MBP M1
ThinkPad X13 Gen 4 with AMD 7840U
My X390 bricked a few years ago after I lost p...
arathunku.com
January 17, 2026 at 6:34 AM
Only 1 result was unexpected, guess which one?
multi-core CPU on M1 vs 7840U
arathunku.com/b/2026-01-17...
multi-core CPU on M1 vs 7840U
arathunku.com/b/2026-01-17...
I wanted to always have up to date hash of contents of the directory after any change to use as a cache key. Started to list files, hashing them only to realize jj is already constantly doing that 😬
jj log --limit 1 -r "ancestors(@)" -T commit_id --no-graph src/
jj log --limit 1 -r "ancestors(@)" -T commit_id --no-graph src/
January 17, 2026 at 5:53 AM
I wanted to always have up to date hash of contents of the directory after any change to use as a cache key. Started to list files, hashing them only to realize jj is already constantly doing that 😬
jj log --limit 1 -r "ancestors(@)" -T commit_id --no-graph src/
jj log --limit 1 -r "ancestors(@)" -T commit_id --no-graph src/
Any good "static typing" for (LLM) markdown to validate cross skill/agent references quickly? Ideally, with some configuration too... I want to easily replace "git skills" with "jj skills" 😀
Maybe @s.ly, you have some pointers given various cross-references in superpowers?
Maybe @s.ly, you have some pointers given various cross-references in superpowers?
January 16, 2026 at 5:26 PM
Any good "static typing" for (LLM) markdown to validate cross skill/agent references quickly? Ideally, with some configuration too... I want to easily replace "git skills" with "jj skills" 😀
Maybe @s.ly, you have some pointers given various cross-references in superpowers?
Maybe @s.ly, you have some pointers given various cross-references in superpowers?
Seeing Claude spinning for 20mins and trying to escape its sandbox is fascinating
January 15, 2026 at 1:36 PM
Seeing Claude spinning for 20mins and trying to escape its sandbox is fascinating
@github.com fine-grained personal access token are really stupid
I can auth gh cli to everything, and all orgs.
I cannot generate auth token for given org without assigning it to the org and waiting for approval from admin.
I can auth gh cli to everything, and all orgs.
I cannot generate auth token for given org without assigning it to the org and waiting for approval from admin.
January 15, 2026 at 11:34 AM
@github.com fine-grained personal access token are really stupid
I can auth gh cli to everything, and all orgs.
I cannot generate auth token for given org without assigning it to the org and waiting for approval from admin.
I can auth gh cli to everything, and all orgs.
I cannot generate auth token for given org without assigning it to the org and waiting for approval from admin.
jj new <change id from workspace X> <change id from workspace Y> feels like cheating
January 15, 2026 at 10:09 AM
jj new <change id from workspace X> <change id from workspace Y> feels like cheating
Claude Code, by default, in system prompt should have:
1. If you do math, you go to jail
2. If you still try to do math, you'll be hanged
3. If you still believe you must do math, do it at least in python
1. If you do math, you go to jail
2. If you still try to do math, you'll be hanged
3. If you still believe you must do math, do it at least in python
January 15, 2026 at 9:51 AM
Claude Code, by default, in system prompt should have:
1. If you do math, you go to jail
2. If you still try to do math, you'll be hanged
3. If you still believe you must do math, do it at least in python
1. If you do math, you go to jail
2. If you still try to do math, you'll be hanged
3. If you still believe you must do math, do it at least in python
Reposted by Michal
Added an "LLM shaming" section to RFD 576
rfd.shared.oxide.computer/rfd/0576#_ll...
rfd.shared.oxide.computer/rfd/0576#_ll...
January 10, 2026 at 9:41 PM
Added an "LLM shaming" section to RFD 576
rfd.shared.oxide.computer/rfd/0576#_ll...
rfd.shared.oxide.computer/rfd/0576#_ll...
Reposted by Michal
I hadn't tried out Nano Banana for diagrams yet so I had a little play. Wonderfully promising and hilariously crap in the details. So close and yet so far.
January 12, 2026 at 9:42 AM
I hadn't tried out Nano Banana for diagrams yet so I had a little play. Wonderfully promising and hilariously crap in the details. So close and yet so far.
Reposted by Michal
#ElixirLang 1.20.0-rc.0 just dropped. 👀 github.com/elixir-lang/...
Release v1.20.0-rc.0 · elixir-lang/elixir
Type system improvements
This release includes type inference of all constructs.
Type inference of function calls
Elixir now performs inference of whole functions. The best way to show the new capa...
github.com
January 9, 2026 at 8:38 PM
#ElixirLang 1.20.0-rc.0 just dropped. 👀 github.com/elixir-lang/...
Tainted timeline, I just saw something replying on TikTok to... GitHub comments?! Generational gap
(Tailwind LLM PR)
(Tailwind LLM PR)
January 9, 2026 at 2:50 PM
Tainted timeline, I just saw something replying on TikTok to... GitHub comments?! Generational gap
(Tailwind LLM PR)
(Tailwind LLM PR)
Reposted by Michal
#jj-vcs 0.37.0 came out yesterday! im intrigued by the new divergent change syntax, seems very neat
github.com/jj-vcs/jj/re...
github.com/jj-vcs/jj/re...
Release v0.37.0 · jj-vcs/jj
About
jj is a Git-compatible version control system that is both simple and powerful. See
the installation instructions to get started.
Release highlights
A new syntax for referring to hidden and...
github.com
January 8, 2026 at 7:42 PM
#jj-vcs 0.37.0 came out yesterday! im intrigued by the new divergent change syntax, seems very neat
github.com/jj-vcs/jj/re...
github.com/jj-vcs/jj/re...