, shell ? false

      src = if lib.inNixShell then null else hydraSrc;

      src = if shell then null else hydraSrc;

      postUnpack = ''

      postUnpack = optionalString (!shell) ''

        if [ -z "$IN_NIX_SHELL" ]; then
          (cd $sourceRoot && (git ls-files -o --directory | xargs -r rm -rfv)) || true
        fi

        (cd $sourceRoot && (git ls-files -o --directory | xargs -r rm -rfv)) || true

(import ./release.nix {}).build.x86_64-linux

(import ./release.nix { shell = true; }).build.x86_64-linux