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nix/doc/manual/rl-next/shorter-build-dir-names.md
Jörg Thalheim 9001121bd6 don't include derivation name in temporary build directories 
With the migration to /nix/var/nix/builds we now have failing builds
when the derivation name is too long.
This change removes the derivation name from the temporary build to have
a predictable prefix length:

Also see: https://github.com/NixOS/infra/pull/764
for context.

(cherry picked from commit 725a2f379f)
2025-09-16 10:23:43 +00:00

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synopsis prs
Temporary build directories no longer include derivation names
13839

Temporary build directories created during derivation builds no longer include the derivation name in their path to avoid build failures when the derivation name is too long. This change ensures predictable prefix lengths for build directories under /nix/var/nix/builds.