boehmgc-traceable_allocator-public.diff patch fails with latest nixpkgs

[shyim]

Describe the bug

When I overwrite the input to follow the latest Nixpkgs, it cannot be built anymore

error: builder for '/nix/store/l62fvmlm02fpn3isiqjjhw36ynr1idlh-boehm-gc-8.2.6.drv' failed with exit code 1;
       last 10 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/1knirm8jgazkcgnrv72bajb3vlg039wd-source
       > source root is source
       > Running phase: patchPhase
       > applying patch /nix/store/bj54wqjwik55hpiq7kgdi4j6wcw07hza-boehmgc-traceable_allocator-public.diff
       > patching file include/gc_allocator.h
       > Reversed (or previously applied) patch detected!  Assume -R? [n]
       > Apply anyway? [n]
       > Skipping patch.
       > 1 out of 1 hunk ignored -- saving rejects to file include/gc_allocator.h.rej
       For full logs, run 'nix log /nix/store/l62fvmlm02fpn3isiqjjhw36ynr1idlh-boehm-gc-8.2.6.drv'.

Expected behavior

A clear and concise description of what you expected to happen.

nix-env --version output

Additional context

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Priorities

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[not-matthias]

Some info

• build failure on boehm-gc dependency cachix/devenv#1200
• PR that introduced it; nixVersions: remove obsolete patch for boehmgc nixpkgs#306036

[not-matthias]

The solution for me was to remove inputs.nixpkgs.follows for the devenv flake dep.