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don't include derivation name in temporary build directories

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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.
This commit is contained in:
Jörg Thalheim 2025-08-27 09:29:47 +02:00
parent 8ee74792fe
commit 725a2f379f
4 changed files with 14 additions and 8 deletions
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6
doc/manual/rl-next/shorter-build-dir-names.md Normal file
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---
synopsis: "Temporary build directories no longer include derivation names"
prs: [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`.