Run 534 failed with 'fixed-output derivations must not reference store
paths: ... gcc-14.3.0-lib' because pip-installed wheels pulled stdenv
into the venv (Python's setup, gcc-lib runtime references).
Adapts authentik's two-stage pattern:
- pyDepsFOD: pip-installs into the venv, then strips every nix store
ref it can find (find+remove-references-to). Output is fully
self-contained — pinned by outputHash.
- pyDeps (non-FOD wrapper): copies the FOD output and runs
autoPatchelfHook against runtime buildInputs (libstdc++, zlib, image
libs for pillow). This restores RPATHs on the .so files that pillow
and scipy ship, against the real on-image library locations.
outputHash still fakeHash — next build prints the real one.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Erich Blume
f8598a6612