imperio
@imperioworld.bsky.social
rustlang reviewer and contributor, rustdoc team leader, gnome foundation member, co-owner of the Gtk-rs organization and of the askama-rs organization
Mastodon: https://toot.cat/@imperio
Mastodon: https://toot.cat/@imperio
Reposted by imperio
Rust in Paris 2026 is on. 🇫🇷🦀
A full day dedicated to real-world Rust: performance, safety, tooling, production stories, and the people building the future with it.
🎤 First lineup is here.
🌐 Website: rustinparis.com
#Rust #RustLang #Programming #OpenSource
A full day dedicated to real-world Rust: performance, safety, tooling, production stories, and the people building the future with it.
🎤 First lineup is here.
🌐 Website: rustinparis.com
#Rust #RustLang #Programming #OpenSource
December 1, 2025 at 3:18 PM
Rust in Paris 2026 is on. 🇫🇷🦀
A full day dedicated to real-world Rust: performance, safety, tooling, production stories, and the people building the future with it.
🎤 First lineup is here.
🌐 Website: rustinparis.com
#Rust #RustLang #Programming #OpenSource
A full day dedicated to real-world Rust: performance, safety, tooling, production stories, and the people building the future with it.
🎤 First lineup is here.
🌐 Website: rustinparis.com
#Rust #RustLang #Programming #OpenSource
"feeling stupid" moment of the day. Currently migrating lot of rustdoc code to a new API, few tests remaining. Made changes while trying to fix one, re-running tests... One less failure... but not the test I was trying to fix.
That was the story. :')
That was the story. :')
December 1, 2025 at 1:44 PM
"feeling stupid" moment of the day. Currently migrating lot of rustdoc code to a new API, few tests remaining. Made changes while trying to fix one, re-running tests... One less failure... but not the test I was trying to fix.
That was the story. :')
That was the story. :')
The first lineup for Rust in Paris 2026! We will have Oli, Alejandra and Jana. Can't wait to see their talks!
The Cfp is still open until the 15th of January, so please don't hesitate to send your talk proposals: docs.google.com/forms/d/e/1F...
See you in Paris in March 2026!
www.rustinparis.com
The Cfp is still open until the 15th of January, so please don't hesitate to send your talk proposals: docs.google.com/forms/d/e/1F...
See you in Paris in March 2026!
www.rustinparis.com
December 1, 2025 at 11:08 AM
The first lineup for Rust in Paris 2026! We will have Oli, Alejandra and Jana. Can't wait to see their talks!
The Cfp is still open until the 15th of January, so please don't hesitate to send your talk proposals: docs.google.com/forms/d/e/1F...
See you in Paris in March 2026!
www.rustinparis.com
The Cfp is still open until the 15th of January, so please don't hesitate to send your talk proposals: docs.google.com/forms/d/e/1F...
See you in Paris in March 2026!
www.rustinparis.com
I recently added a lint in the rust compiler and considering that it could prevent CVEs, I think it's worth talking about it.
Blog post is here: blog.guillaume-gomez.fr/articles/202...
spoiler alert: double cat dose!
Blog post is here: blog.guillaume-gomez.fr/articles/202...
spoiler alert: double cat dose!
New rust lint: function_casts_as_integer
Blog of Guillaume Gomez (New rust lint: function_casts_as_integer)
blog.guillaume-gomez.fr
November 28, 2025 at 10:59 AM
I recently added a lint in the rust compiler and considering that it could prevent CVEs, I think it's worth talking about it.
Blog post is here: blog.guillaume-gomez.fr/articles/202...
spoiler alert: double cat dose!
Blog post is here: blog.guillaume-gomez.fr/articles/202...
spoiler alert: double cat dose!
Also: we're still looking for sponsors: it'll allow us to pay travels for speakers and eventually individuals.
If your company is interested, please reach out to me!
If your company is interested, please reach out to me!
It's time to announce Rust in Paris 2026! It will be on the Friday 27th of March 2026.
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
Call For Papers:🦀 Rust In Paris - 27.03.25 - Paris & Remote
Hey Rustaceans, Rust In Paris is soliciting you for talk proposals!
We are gathering next March in Paris to kick off a second Rust adventure, and we would love you to help us shape up the perfect Rus...
docs.google.com
November 26, 2025 at 10:31 AM
Also: we're still looking for sponsors: it'll allow us to pay travels for speakers and eventually individuals.
If your company is interested, please reach out to me!
If your company is interested, please reach out to me!
It's time to announce Rust in Paris 2026! It will be on the Friday 27th of March 2026.
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
Call For Papers:🦀 Rust In Paris - 27.03.25 - Paris & Remote
Hey Rustaceans, Rust In Paris is soliciting you for talk proposals!
We are gathering next March in Paris to kick off a second Rust adventure, and we would love you to help us shape up the perfect Rus...
docs.google.com
November 26, 2025 at 10:10 AM
It's time to announce Rust in Paris 2026! It will be on the Friday 27th of March 2026.
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
The CfP is now also open. Don't hesitate to propose your talks: docs.google.com/forms/d/e/1F...
You can also buy your ticket here: ti.to/xperhub/rust...
See you there!
www.rustinparis.com
When the fix is -2 +1 but the explanation of the bugfix is a whole trip through how rustdoc generates link for impl items of type aliases... Well, that allowed me to uncover thinks that need to be changed. More work, yeay. =D
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
Fix invalid link generation for type alias methods by GuillaumeGomez · Pull Request #149274 · rust-lang/rust
Fixes #149205.
That one was quite the wild ride. First commit is the actual fix, the second commit is just a small name variable improvement while I was going through the code. Anyway, let's go...
github.com
November 24, 2025 at 4:31 PM
When the fix is -2 +1 but the explanation of the bugfix is a whole trip through how rustdoc generates link for impl items of type aliases... Well, that allowed me to uncover thinks that need to be changed. More work, yeay. =D
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
Reposted by imperio
Super excited to see you all again at RustWeek next year! ✨
Early Bird tickets for RustWeek 2026 are available until Nov 30.
Get your 20% discount while you can!
The world's biggest Rust conference returns to beautiful Utrecht, welcoming over 900+ community members, professionals and the maintainers of Rust.
2026.rustweek.org
#rustweek2026 #rustlang
Get your 20% discount while you can!
The world's biggest Rust conference returns to beautiful Utrecht, welcoming over 900+ community members, professionals and the maintainers of Rust.
2026.rustweek.org
#rustweek2026 #rustlang
RustWeek 2026
RustWeek 2026, The Netherlands - May 18 - 23 2026. The world's biggest Rust conference returns to beautiful Utrecht, welcoming over 900+ community members, professionals and the maintainers of Rust.
2026.rustweek.org
November 18, 2025 at 3:37 PM
Super excited to see you all again at RustWeek next year! ✨
Just added `NetBSD` support in the Rust sysinfo crate: github.com/GuillaumeGom...
There are still some missing information like:
* Product/Motherboard information doesn't work
* Temperature information is not retrieved
* Process::open_files
* Process::root
Any help is very welcome!
There are still some missing information like:
* Product/Motherboard information doesn't work
* Temperature information is not retrieved
* Process::open_files
* Process::root
Any help is very welcome!
Add NetBSD support by GuillaumeGomez · Pull Request #1599 · GuillaumeGomez/sysinfo
Fixes #631.
Not done in this PR:
Product/Motherboard information seems to not work and is incomplete
Temperature information is not retrieved
Process::open_files
Process::root
github.com
November 18, 2025 at 2:09 PM
Just added `NetBSD` support in the Rust sysinfo crate: github.com/GuillaumeGom...
There are still some missing information like:
* Product/Motherboard information doesn't work
* Temperature information is not retrieved
* Process::open_files
* Process::root
Any help is very welcome!
There are still some missing information like:
* Product/Motherboard information doesn't work
* Temperature information is not retrieved
* Process::open_files
* Process::root
Any help is very welcome!
Next Paris Rust meetup will on the 8th of december and will be hosted by criteo.
You can register here: www.meetup.com/rust-paris/e...
You can register here: www.meetup.com/rust-paris/e...
Rust meetup #81, Mon, Dec 8, 2025, 6:30 PM | Meetup
(English version below)
Ce Rust meetup Paris sera hébergé par Criteo. L'adresse complète est :
32 rue Blanche
75009 Paris
Les rustacées de n'importe quel niveau sont les
www.meetup.com
November 15, 2025 at 12:29 PM
Next Paris Rust meetup will on the 8th of december and will be hosted by criteo.
You can register here: www.meetup.com/rust-paris/e...
You can register here: www.meetup.com/rust-paris/e...
Reposted by imperio
🦀 I've improved the implementation behind all the string formatting macros in Rust: println, panic, format, write, log::info, etc. (Everything using format_args!().) They will compile a bit faster, use a bit less memory while compiling, result in smaller binaries, and produce more efficient code! 🎉
November 13, 2025 at 1:31 PM
🦀 I've improved the implementation behind all the string formatting macros in Rust: println, panic, format, write, log::info, etc. (Everything using format_args!().) They will compile a bit faster, use a bit less memory while compiling, result in smaller binaries, and produce more efficient code! 🎉
To expand/collapse sections in rust documentation, you can use `+` and `-` shortcuts. We added `=` to expand sections (since it's the same key as `+`).
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
rustdoc: quality of life changes by liigo · Pull Request #148466 · rust-lang/rust
Support = shortcut (alongside +) to expand all sections. Already support s and S, Shift or not.
Fix search-input's placeholder. The input is auto focused, any key press will be accepted as inpu...
github.com
November 12, 2025 at 4:56 PM
To expand/collapse sections in rust documentation, you can use `+` and `-` shortcuts. We added `=` to expand sections (since it's the same key as `+`).
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
Fixed an invalid proc-macro link generation in the "jump to def" rustdoc feature. Also started to unify code responsible for generating links in rustdoc, but much remains to be done to only have one location to do it all.
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
[rustdoc] Fix invalid jump to def macro link generation by GuillaumeGomez · Pull Request #148080 · rust-lang/rust
Follow-up of #147820.
I realized that when there was no intra-doc link linking to the same item, then the generated link for macros in jump to def would be invalid.
To make the code less redundant,...
github.com
November 12, 2025 at 1:29 PM
Fixed an invalid proc-macro link generation in the "jump to def" rustdoc feature. Also started to unify code responsible for generating links in rustdoc, but much remains to be done to only have one location to do it all.
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
Added a new rustc lint which will hopefully prevent a lot of very wrong casts: `function_casts_as_integer`.
In short, if you convert a function to an integer, it will now warn.
Why? Because of cases like:
```rust
let _ = [0; u8::max as usize];
```
1/2
In short, if you convert a function to an integer, it will now warn.
Why? Because of cases like:
```rust
let _ = [0; u8::max as usize];
```
1/2
Add new `function_casts_as_integer` lint by GuillaumeGomez · Pull Request #141470 · rust-lang/rust
The function_casts_as_integer lint detects cases where users cast a function pointer into an integer.
warn-by-default
Example
fn foo() {}
let x = foo as usize;
warning: casting a function into an i...
github.com
November 11, 2025 at 4:52 PM
Added a new rustc lint which will hopefully prevent a lot of very wrong casts: `function_casts_as_integer`.
In short, if you convert a function to an integer, it will now warn.
Why? Because of cases like:
```rust
let _ = [0; u8::max as usize];
```
1/2
In short, if you convert a function to an integer, it will now warn.
Why? Because of cases like:
```rust
let _ = [0; u8::max as usize];
```
1/2
We had a highlighting issue in rustdoc: when some keywords were followed by `!` (like `if !true {}`), they were considered as a macro call.
Fixed in github.com/rust-lang/ru....
Fixed in github.com/rust-lang/ru....
Fix invalid macro tag generation for keywords which can be followed by values by GuillaumeGomez · Pull Request #148655 · rust-lang/rust
Fixes #148617.
The problem didn't come from the generate-macro-expansion feature but was actually uncovered thanks to it.
Keywords like if or return, when followed by a ! were considered as mac...
github.com
November 10, 2025 at 10:48 AM
We had a highlighting issue in rustdoc: when some keywords were followed by `!` (like `if !true {}`), they were considered as a macro call.
Fixed in github.com/rust-lang/ru....
Fixed in github.com/rust-lang/ru....
Working on adding NetBSD support in sysinfo crate. To do so, I'm looking at a lot of other software doing the same thing, allowing me to uncover bugs/potential improvements, like this one in htop: github.com/htop-dev/hto...
It's pretty cool to send PRs to projects you've been using since forever =D
It's pretty cool to send PRs to projects you've been using since forever =D
NetBSD: Improve process state retrieval code by GuillaumeGomez · Pull Request #1809 · htop-dev/htop
Also: only iterate on possible states if kinfo_lwp struct is not NULL.
If you're interested into it (if you agree, gonna be in a follow-up PR): we currently need to check at each iteration of t...
github.com
November 9, 2025 at 4:41 PM
Working on adding NetBSD support in sysinfo crate. To do so, I'm looking at a lot of other software doing the same thing, allowing me to uncover bugs/potential improvements, like this one in htop: github.com/htop-dev/hto...
It's pretty cool to send PRs to projects you've been using since forever =D
It's pretty cool to send PRs to projects you've been using since forever =D
@viedecarabin.bsky.social Bonjour, je viens de finir de lire vdc 5 (très sympa) et je me demandais : pourquoi y a-t-il écrit ENIGME dans les bas de pages ? Au début je pensais que c'était un bug d'impression ^^'
November 9, 2025 at 12:37 AM
@viedecarabin.bsky.social Bonjour, je viens de finir de lire vdc 5 (très sympa) et je me demandais : pourquoi y a-t-il écrit ENIGME dans les bas de pages ? Au début je pensais que c'était un bug d'impression ^^'
Today some bugfixes for rustdoc (and an improvement):
* Removed broken special case for index generator: github.com/rust-lang/ru...
* Fixed a bug in the "macro expansion" feature: github.com/rust-lang/ru...
* Simplified code handling search filtering: github.com/rust-lang/ru...
* Removed broken special case for index generator: github.com/rust-lang/ru...
* Fixed a bug in the "macro expansion" feature: github.com/rust-lang/ru...
* Simplified code handling search filtering: github.com/rust-lang/ru...
rustdoc-search: remove broken index special case by notriddle · Pull Request #148563 · rust-lang/rust
Fixes #148431
github.com
November 7, 2025 at 1:57 PM
Today some bugfixes for rustdoc (and an improvement):
* Removed broken special case for index generator: github.com/rust-lang/ru...
* Fixed a bug in the "macro expansion" feature: github.com/rust-lang/ru...
* Simplified code handling search filtering: github.com/rust-lang/ru...
* Removed broken special case for index generator: github.com/rust-lang/ru...
* Fixed a bug in the "macro expansion" feature: github.com/rust-lang/ru...
* Simplified code handling search filtering: github.com/rust-lang/ru...
Some rustdoc news:
* When you use search and filter on `import`, it will now also include reexported extern (PR: github.com/rust-lang/ru...)
* Some cleanup which led to a performance improvement in highlighting (PR: github.com/rust-lang/ru...)
* When you use search and filter on `import`, it will now also include reexported extern (PR: github.com/rust-lang/ru...)
* Some cleanup which led to a performance improvement in highlighting (PR: github.com/rust-lang/ru...)
github.com
November 3, 2025 at 10:54 AM
Some rustdoc news:
* When you use search and filter on `import`, it will now also include reexported extern (PR: github.com/rust-lang/ru...)
* Some cleanup which led to a performance improvement in highlighting (PR: github.com/rust-lang/ru...)
* When you use search and filter on `import`, it will now also include reexported extern (PR: github.com/rust-lang/ru...)
* Some cleanup which led to a performance improvement in highlighting (PR: github.com/rust-lang/ru...)
In rustdoc search, when using `macro` filter, it will now include attribute and derive macros as well.
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
[rustdoc] Include attribute and derive macros when filtering on "macros" by GuillaumeGomez · Pull Request #148176 · rust-lang/rust
As discussed here, some filters should have been "grouped". This PR allows attribute and derive macros to match the macro filter.
I'll wait for #148005 to add more tests as it would r...
github.com
October 30, 2025 at 10:50 AM
In rustdoc search, when using `macro` filter, it will now include attribute and derive macros as well.
PR: github.com/rust-lang/ru...
PR: github.com/rust-lang/ru...
Reposted by imperio
rust-analyzer now fully uses the new trait solver! 🎉🎉 rust-analyzer.github.io/thisweek/202...
Changelog #299
Commit: 049767eRelease: 2025-10-27 (v0.3.2658)
rust-analyzer.github.io
October 27, 2025 at 11:55 AM
rust-analyzer now fully uses the new trait solver! 🎉🎉 rust-analyzer.github.io/thisweek/202...
After next docs.rs server update, you will be able to use `additional-targets` in your Cargo.toml docs.rs metadata. That will allow you to not have to re-declare the whole default list target but instead to just add more platforms as you see fit
Should simplify things :)
github.com/rust-lang/do...
Should simplify things :)
github.com/rust-lang/do...
Docs.rs
docs.rs
October 22, 2025 at 3:11 PM
After next docs.rs server update, you will be able to use `additional-targets` in your Cargo.toml docs.rs metadata. That will allow you to not have to re-declare the whole default list target but instead to just add more platforms as you see fit
Should simplify things :)
github.com/rust-lang/do...
Should simplify things :)
github.com/rust-lang/do...
Following changes in Rust tier targets, docs.rs updated the default targets as well.
Blog post is here: blog.rust-lang.org/2025/10/16/d...
Blog post is here: blog.rust-lang.org/2025/10/16/d...
Docs.rs
docs.rs
October 16, 2025 at 4:10 PM
Following changes in Rust tier targets, docs.rs updated the default targets as well.
Blog post is here: blog.rust-lang.org/2025/10/16/d...
Blog post is here: blog.rust-lang.org/2025/10/16/d...
Reposted by imperio
I'm excited to share what I've been working on with @erikjee.bsky.social: RustNL's #rustlang Maintainers Fund!
Many people and companies contributing to Rust, but there are fewer and fewer paid positions for general maintenance (reviews,cleanups,etc). We need to fix that.
bsky.app/profile/rust...
Many people and companies contributing to Rust, but there are fewer and fewer paid positions for general maintenance (reviews,cleanups,etc). We need to fix that.
bsky.app/profile/rust...
We're excited to announce a new initiative to support the Rust Project, our Rust Maintainers Fund!
We are setting out to employ 6 full-time maintainers and 6 interns in 2026 to make sure #rustlang is well maintained and bugs and contributions get the attention they need.
Read more: rustnl.org/fund
We are setting out to employ 6 full-time maintainers and 6 interns in 2026 to make sure #rustlang is well maintained and bugs and contributions get the attention they need.
Read more: rustnl.org/fund
October 14, 2025 at 3:15 PM
I'm excited to share what I've been working on with @erikjee.bsky.social: RustNL's #rustlang Maintainers Fund!
Many people and companies contributing to Rust, but there are fewer and fewer paid positions for general maintenance (reviews,cleanups,etc). We need to fix that.
bsky.app/profile/rust...
Many people and companies contributing to Rust, but there are fewer and fewer paid positions for general maintenance (reviews,cleanups,etc). We need to fix that.
bsky.app/profile/rust...