On April 7, 2025 8:57:56 PM GMT+02:00, Matt Corallo <rpmci...@bluematt.me>
wrote:
>
>
>On 4/7/25 2:13 PM, Fabian Grünbichler wrote:
>> Version: 1.82.0+dfsg1-1
>>
>> On Mon, Apr 7, 2025, at 3:31 PM, Matt Corallo wrote:
>>> Package: src:rustc
>>> Version: 1.63.0+dfsg1-2
>>>
>> rustc since the version mentioned above ships the original Cargo.lock
>> in rust-src.
>
>https://packages.debian.org/bookworm/all/rust-src/filelist disagrees? There
>are various Cargo.lock files, but none at the path above and all for dependent
>crates of std, not for std itself.
That's bookworm, the version with the fix came later, Trixie/did ship the
Cargo.lock file:
https://packages.debian.org/trixie/all/rust-src/filelist
>> this enables calling
>>
>> RUST_BOOTSTRAP=1 cargo build -Zbuild-std
>>
>> depending on your desired target, you might need additional flags
>> and/or workarounds though.
>
>Yes, I have to run `touch /usr/lib/rustlib/src/rust/Cargo.lock` first :).
You don't in Trixie ;)
>> note that this lock file includes a lot of things that we actually
>> remove when doing the package build, and versions might not line up
>> 100% as a result, so it is possible for this to fail still or be
>> buggy.
>>
>> shipping the actually used Cargo.lock file would require also shipping
>> a copy of all the vendored crates used for the build in their patched
>> form (since those would be referenced by that Cargo.lock file), and
>> configuring the build to use it (at least for building core and std and
>> friends).
>
>Specifically, my issue is that building with the above command results in
>failures because cargo pulls the latest `compiler-builtins` when building with
>-Zbuild-std which fails to build (as compiler-builtins is only supported for a
>specific version of rustc). A Cargo.lock should enable rustc to pin
>`compiler-builtins`, I imagine.
>
>> you can likely manually achieve such a setup by downloading the rustc
>> source package and modifying it to build a toolchain and libstd for
>> your desired target.
>
>If this is required maybe debian should be shipping for way more platforms?
That's not really possible/in scope for Debian..
