iiinova — where your digital self keeps evolving

Lukas Wirth @lukaswirth.dev · 30/06/2026

Just stumbled upon the fact that both anthropic and openai are implementing the modelcontextprotocol.io/specificatio... spec incorrectly, forbidding `.` from being used in tool names 🙄

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Lukas Wirth @lukaswirth.dev · 03/05/2026

this but on a very different scale

A: I made this
B: You made this?
B: I made this

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Lukas Wirth @lukaswirth.dev · 16/01/2026

Oh so that's what you changed on my PR, this diff had me so confused lol

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Lukas Wirth @lukaswirth.dev · 31/12/2025

`#![feature(trivial_bounds)]` or as I like to call it on stable: `for<'trivial_bounds> Type: Bound`

$error[E0277]: the trait bound `NoopEviction: HasCapacity` is not satisfied --> tests\cycle.rs:1306:5 | 1306 | #[salsa::tracked] | ^^^^^^^^^^^^^^^^^ the trait `HasCapacity` is not implemented for `NoopEviction` | help: the trait `HasCapacity` is implemented for `Lru` --> C:\Workspace\salsa\src\function\eviction\lru.rs:75:1 | 75 | impl HasCapacity for Lru {} | ^^^^^^^^^^^^^^^^^^^^^^^^ = help: see issue #48214 = note: this error originates in the macro `salsa::plumbing::setup_tracked_fn` which comes from the expansion of the attribute macro `salsa::tracked` (in Nightly builds, run with -Z macro-backtrace for more info) help: add `#![feature(trivial_bounds)]` to the crate attributes to enable | 7 + #![feature(trivial_bounds)] |$ $fn set_lru_capacity(db: &mut dyn $Db, value: usize) where for<'trivial_bounds> $Eviction: $zalsa::function::HasCapacity { $Configuration::fn_ingredient_mut(db).set_capacity(value); }$

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Lukas Wirth @lukaswirth.dev · 18/12/2025

Look at the diff of a PR that touches a lot of files and you will be forced into this weird mode which is just so annoying to work with in my opinion.

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Lukas Wirth @lukaswirth.dev · 13/06/2025

Whew this is bigger than expected

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Lukas Wirth @lukaswirth.dev · 29/05/2025

Finally fixed rust-analyzer not carrying over `#[cfg(..)]` attributes when inserting imports into the file github.com/rust-lang/ru...

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Lukas Wirth @lukaswirth.dev · 29/04/2025

why does this still work lol. I guess I didn't remove it, I just changed our heuristics to no longer special case string literals.

A screenshot of a VSCode hoverbox from hovering the string literal in `#[serde(skip_serializing_if = "Option::is_none")]`

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Lukas Wirth @lukaswirth.dev · 26/04/2025

I just got an amazing captcha

A tile clicking image base captcha with 4x4 tiles. The entire image is one giant bus and the captcha asks to select all tiles with buses.

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Lukas Wirth @lukaswirth.dev · 22/04/2025

I've been neglecting reviews on rust-analyzer for too long again it seems 😩

Screenshot showing the pull request tab of rust-lang/rust-analyzer with 30 open PRs

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Lukas Wirth @lukaswirth.dev · 10/02/2025

Progress! Most IDE features work now (notice syntax highlighting and inlay hints) and I've also added really bad whitespace insertion to make things more legible. There are some off by one errors in the mapping code though so some stuff breaks occasionally.

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Lukas Wirth @lukaswirth.dev · 09/02/2025

Okay this is more viable than I anticipated now I feel like I have to flesh this out. I think this is what you could label as actual first class IDE support for macros. I am astonished at how well this works.

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Lukas Wirth @lukaswirth.dev · 09/02/2025

Had some fun with prototyping a very cursed idea in rust-analyzer today.

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Lukas Wirth @lukaswirth.dev · 30/12/2024

rust-analyzer now has some basic* parameter variance inferrence and it shows it on hover! *basic as in it can't handle cyclic dependencies yet for temporary implementation reasons, it also struggles with usages within const arguments.

Screenshot of hovering `Option`'s `T` parameter showing that it is covariant

Screenshot of hovering `RefCell`'s `T` parameter showing that it is invariant

Screenshot of hovering `Path::new`'s `S` parameter showing that it is contravariant

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Lukas Wirth @lukaswirth.dev · 21/11/2024

The Shinkasen is a pretty cool experience I have to say (especially when you are used to the Deutsche Bahn)

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