[PATCH] remove sysroot assertion in generate_rust_analyzer.py

[PATCH] remove sysroot assertion in generate_rust_analyzer.py

[Onur Özkan]

With nixpkgs's rustc, rust-src component is not bundled
with the compiler by default and is instead provided from
a separate store path, so this assumption does not hold.

The assertion assumes these paths are in the same location
which causes `make LLVM=1 rust-analyzer` to fail on NixOS.

Link: https://rust-for-linux.zulipchat.com/#narrow/stream/x/topic/x/near/565284250
Signed-off-by: Onur Özkan <work@onurozkan.dev>
---
 scripts/generate_rust_analyzer.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index 147d0cc94068..e69fa5e0a9b9 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -213,9 +213,6 @@ def main():
         level=logging.INFO if args.verbose else logging.WARNING
     )
 
-    # Making sure that the `sysroot` and `sysroot_src` belong to the same toolchain.
-    assert args.sysroot in args.sysroot_src.parents
-
     rust_project = {
         "crates": generate_crates(args.srctree, args.objtree, args.sysroot_src, args.exttree, args.cfgs, args.core_edition),
         "sysroot": str(args.sysroot),
-- 
2.51.2

Re: [PATCH] remove sysroot assertion in generate_rust_analyzer.py

[Gary Guo]

On Wed, 24 Dec 2025 16:53:43 +0300
Onur Özkan <work@onurozkan.dev> wrote:

> With nixpkgs's rustc, rust-src component is not bundled
> with the compiler by default and is instead provided from
> a separate store path, so this assumption does not hold.
> 
> The assertion assumes these paths are in the same location
> which causes `make LLVM=1 rust-analyzer` to fail on NixOS.
> 
> Link: https://rust-for-linux.zulipchat.com/#narrow/stream/x/topic/x/near/565284250
> Signed-off-by: Onur Özkan <work@onurozkan.dev>

I can confirm that the assertion will indeed fail when using nixpkgs's
provided rust-src (although rust-overlay is fine).

Reviewed-by: Gary Guo <gary@garyguo.net>

> ---
>  scripts/generate_rust_analyzer.py | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
> index 147d0cc94068..e69fa5e0a9b9 100755
> --- a/scripts/generate_rust_analyzer.py
> +++ b/scripts/generate_rust_analyzer.py
> @@ -213,9 +213,6 @@ def main():
>          level=logging.INFO if args.verbose else logging.WARNING
>      )
>  
> -    # Making sure that the `sysroot` and `sysroot_src` belong to the same toolchain.
> -    assert args.sysroot in args.sysroot_src.parents
> -
>      rust_project = {
>          "crates": generate_crates(args.srctree, args.objtree, args.sysroot_src, args.exttree, args.cfgs, args.core_edition),
>          "sysroot": str(args.sysroot),

Re: [PATCH] remove sysroot assertion in generate_rust_analyzer.py

[Miguel Ojeda]

On Wed, Dec 24, 2025 at 2:54 PM Onur Özkan <work@onurozkan.dev> wrote:
>
> With nixpkgs's rustc, rust-src component is not bundled
> with the compiler by default and is instead provided from
> a separate store path, so this assumption does not hold.
>
> The assertion assumes these paths are in the same location
> which causes `make LLVM=1 rust-analyzer` to fail on NixOS.
>
> Link: https://rust-for-linux.zulipchat.com/#narrow/stream/x/topic/x/near/565284250
> Signed-off-by: Onur Özkan <work@onurozkan.dev>

Applied to `rust-fixes` -- thanks everyone!

    Fixes: fe992163575b ("rust: Support latest version of `rust-analyzer`")
    Cc: stable@vger.kernel.org

    [ Reworded title. - Miguel ]

Cheers,
Miguel