Unfortunately disabling preferLocalBuild in buildEnv doesn’t help. It also seems that all the symlinks in /nix/store/dhz34xy8k97i7551dhmmv9kbipd1gvji-hydra-perl-deps/bin/ point to correctly build executables for Linux except for the Nix tools.
Any idea why the Nix derivation gets build for MacOS while the rest is correctly build for Linux?