Mastouille

David RungeThe new alpm-srcinfo crate in version 0.3.0 now supports creating <a href="https://chaos.social/tags/SRCINFO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SRCINFO</a> files from <a href="https://chaos.social/tags/PKGUILD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PKGUILD</a> files (with the help of the new alpm-pkgbuild library) - thanks to <a href="https://chaos.social/@Nukesor" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@Nukesor</a>. 📄 -> ✅ <a href="https://crates.io/crates/alpm-srcinfo/0.3.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-srcinfo/0.3.0</a>See the list of changes: <a href="https://alpm.archlinux.page/alpm-srcinfo/CHANGELOG.html#030---2025-07-24" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://alpm.archlinux.page/alpm-srcinfo/CHANGELOG.html#030---2025-07-24</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/Packaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Packaging</a> <a href="https://chaos.social/tags/ALPM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ALPM</a>

David RungeThe new alpm-pkgbuild crate by <a href="https://chaos.social/@Nukesor" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@Nukesor</a> offers parsing access for the metadata contained in PKGBUILD files via a Bash based exporter script 📄<a href="https://crates.io/crates/alpm-pkgbuild/0.1.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-pkgbuild/0.1.0</a><a href="https://gitlab.archlinux.org/archlinux/alpm/alpm-pkgbuild-bridge" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://gitlab.archlinux.org/archlinux/alpm/alpm-pkgbuild-bridge</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/Packaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Packaging</a> <a href="https://chaos.social/tags/ALPM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ALPM</a>

David RungeThe alpm-package crate in version 0.2.0 now allows to stream the contents of package files thanks to the awesome work of <a href="https://fosstodon.org/@orhun" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@orhun</a> 📦<a href="https://crates.io/crates/alpm-package/0.2.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-package/0.2.0</a>See the list of changes: <a href="https://alpm.archlinux.page/alpm-package/CHANGELOG.html#020---2025-07-24" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://alpm.archlinux.page/alpm-package/CHANGELOG.html#020---2025-07-24</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/Packaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Packaging</a>

David RungeThe alpm-buildinfo and alpm-pkginfo crates in version 0.3.0 now make use of stricter version handling. ✅ <a href="https://crates.io/crates/alpm-buildinfo/0.3.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-buildinfo/0.3.0</a> <a href="https://crates.io/crates/alpm-pkginfo/0.3.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-pkginfo/0.3.0</a>See the list of changes: <a href="https://alpm.archlinux.page/alpm-buildinfo/CHANGELOG.html#030---2025-07-24" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://alpm.archlinux.page/alpm-buildinfo/CHANGELOG.html#030---2025-07-24</a> <a href="https://alpm.archlinux.page/alpm-pkginfo/CHANGELOG.html#030---2025-07-24" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://alpm.archlinux.page/alpm-pkginfo/CHANGELOG.html#030---2025-07-24</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/Packaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Packaging</a>

David RungeYesterday we released another set of updates for the <a href="https://chaos.social/tags/ALPM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ALPM</a> crates. 🦀 This also includes additional and updated specifications 📜 The alpm-types crate in version 0.7.0 now has better handling for different types of versions. 📚 This comes in handy in file formats and environments where version handling should be more strict/specific.<a href="https://crates.io/crates/alpm-types/0.7.0" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://crates.io/crates/alpm-types/0.7.0</a>See the list of changes: <a href="https://alpm.archlinux.page/alpm-types/CHANGELOG.html#070---2025-07-24" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://alpm.archlinux.page/alpm-types/CHANGELOG.html#070---2025-07-24</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/Packaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Packaging</a>

EuroRustThis one will happen one day after the conference. So, if you’re extending your stay in Paris for the weekend, we’ll see you there! 🗓️ Saturday, October 11, 16:30–18:00Book your spot ➡️ <a href="https://eurorust.eu/activities/street-art-tour/?utm_source=mastodon&utm_medium=social&utm_campaign=2025-07-24-side-activity-art" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://eurorust.eu/activities/street-art-tour/?utm_source=mastodon&utm_medium=social&utm_campaign=2025-07-24-side-activity-art</a> <a href="https://fosstodon.org/tags/EuroRust25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#EuroRust25</a> <a href="https://fosstodon.org/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://fosstodon.org/tags/RustInParis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustInParis</a> <a href="https://fosstodon.org/tags/StreetArt" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#StreetArt</a> <a href="https://fosstodon.org/tags/ParisUnderground" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ParisUnderground</a> <a href="https://fosstodon.org/tags/RustConference" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustConference</a>

Kat Marchán 🐈I tried loco.rsI will not be trying loco.rs again, unfortunately.<a href="https://toot.cat/tags/Rust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rust</a> <a href="https://toot.cat/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a>

AnisseYou'll find this benchmarking adventure in its own blog post "Performance lessons of implementing lbzcat in Rust" <a href="https://anisse.astier.eu/lbzip2-rs.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://anisse.astier.eu/lbzip2-rs.html</a><a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://social.treehouse.systems/tags/lbzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lbzip2</a> <a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/benchmarking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#benchmarking</a> <a href="https://social.treehouse.systems/tags/performance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#performance</a>

AnisseThat's it for the benchmarking! You can find my implementation at <a href="http://github.com/anisse/lbzip2-rs/" rel="nofollow noopener noreferrer" translate="no" target="_blank">http://github.com/anisse/lbzip2-rs/</a> ; it's very much PoC-quality code, so use at our own risks! I chose to manually spawn threads instead of using rayon or an async runtime; there are other things I'm not proud of, like busy-waiting instead of condvar for example. 14/N<a href="https://social.treehouse.systems/tags/lbzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lbzip2</a> <a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://social.treehouse.systems/tags/async" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#async</a> <a href="https://social.treehouse.systems/tags/rayon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rayon</a>

AnisseWhat about <a href="https://github.com/anisse/lbzip2-rs/" rel="nofollow noopener noreferrer" target="_blank">my implementation of lbzcat</a>? It was designed to work with files generated by lbzip2: it does not work on some files compressed by bzip2, and silently produces incorrect output (!). So we'll limit benchmarking to files produced by lbzip2. 11/N<a href="https://social.treehouse.systems/tags/lbzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lbzip2</a> <a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a>

AnisseThat gives us our baseline: bzip2 (in C) vs bzip2 (in Rust). But is it a fair enough comparison? I mentioned initially that I was implementing an lbzip2 "clone" (mostly a PoC for the decompression part). lbzip2 is an other program (a C binary, without a library), that can compress and decompress bzip2 files in parallel. Surely it should be slower than bzip2 since it has the parallel management overhead? 7/N<a href="https://social.treehouse.systems/tags/lbzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lbzip2</a> <a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://social.treehouse.systems/tags/perf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#perf</a>

AnisseBut why? Let's see what <code>perf stat</code> has to say: the Rust version has less instructions, but with much less IPC (Instruction-per-clock); the Rust version also has less branches and misses in general. On the efficiency cores, we see that worse IPC and branch prediction of the Rust version give the advantage to the C version. 6/N<a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://social.treehouse.systems/tags/perf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#perf</a>

AnisseSo, let's start with the most obvious, the performance cores; they make the most sense for a CPU-intensive task; on my systems those are CPU 4-7. We can see here that the promise of the Trifecta Foundation holds, as the rust implementation is about 4% faster. 4/N<a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://social.treehouse.systems/tags/AsahiLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AsahiLinux</a>

AnisseFirst, let's look at the baseline. The <a href="https://fosstodon.org/@trifectatech" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@trifectatech</a> foundation <a href="https://trifectatech.org/blog/bzip2-crate-switches-from-c-to-rust/" rel="nofollow noopener noreferrer" target="_blank">recently claimed that bzip2-rs had faster decompression than libbzip2's original C implementation</a>. Is this true? Well, it depends... 2/N<a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a>

AnisseFor fun I implemented lbzip2's <a href="https://github.com/anisse/lbzip2-rs/" rel="nofollow noopener noreferrer" target="_blank">lbzcat (parallel bzip2 decompression) clone in rust</a>, using the bzip2 crate. I found a lot of different interesting things. 1/N<a href="https://social.treehouse.systems/tags/lbzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lbzip2</a> <a href="https://social.treehouse.systems/tags/bzip2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bzip2</a> <a href="https://social.treehouse.systems/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a>

Matthias EndlerSeason 4 of the Rust in Production podcast is a wrap! 🎉We had amazing guests from Microsoft, Astral, and more, discussing Rust's role in foundational software.We collected our favorite quotes from this season in our season finale!<a href="https://corrode.dev/podcast/s04e08-season-finale/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://corrode.dev/podcast/s04e08-season-finale/</a><a href="https://mastodon.social/tags/rust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rust</a> <a href="https://mastodon.social/tags/rustlang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rustlang</a> <a href="https://mastodon.social/tags/podcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#podcast</a>

EuroRustExtend your stay in Paris after the conference🗓️ Saturday, October 11, 14:30–16:45Reserve your spot ➡️ <a href="https://eurorust.eu/activities/movie-tour/?utm_source=mastodon&utm_medium=social&utm_campaign=2025-07-23-side-activity-movie" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://eurorust.eu/activities/movie-tour/?utm_source=mastodon&utm_medium=social&utm_campaign=2025-07-23-side-activity-movie</a> <a href="https://fosstodon.org/tags/EuroRust25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#EuroRust25</a> <a href="https://fosstodon.org/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://fosstodon.org/tags/RustInParis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustInParis</a> <a href="https://fosstodon.org/tags/Montmartre" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Montmartre</a> <a href="https://fosstodon.org/tags/MovieTour" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MovieTour</a> <a href="https://fosstodon.org/tags/RustConference" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustConference</a>

Jacob PrattBetween a combination of using `const` blocks and (primarily) intelligently omitting what code is emitted, I managed to cut the output of the `format_description!` macro in `time` by 65–70% for a typical use case. All other macros emit less code as well.Nothing super flashy, but there will be a release of `time` relatively soon. It will include an MSRV bump to 1.81.0 (released 2024-09-05). It's first MSRV bump in two years. Some new types are under development.<a href="https://mastodon.social/tags/Rust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rust</a> <a href="https://mastodon.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://mastodon.social/tags/programming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#programming</a>

David RungeI wrote a bit about the <a href="https://chaos.social/tags/ALPM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ALPM</a> <a href="https://chaos.social/tags/documentation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#documentation</a>:<a href="https://devblog.archlinux.page/2025/specifications/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://devblog.archlinux.page/2025/specifications/</a><a href="https://chaos.social/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ArchLinux</a> <a href="https://chaos.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> <a href="https://chaos.social/tags/SovereignTechFund" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SovereignTechFund</a>

all-inclusive gender resortThe <a href="https://crabby.fyi/tags/RustLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RustLang</a> project is now a CNA 🎉 <a href="https://www.cve.org/Media/News/item/news/2025/07/22/The-Rust-Project-Added-as-CNA" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.cve.org/Media/News/item/news/2025/07/22/The-Rust-Project-Added-as-CNA</a>

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