os/overlays/blesh.nix

final: prev: {
  blesh = prev.blesh.overrideAttrs (oldAttrs: rec {
    inherit (prev.sources.blesh-nvfetcher) version src;

    dontBuild = false;
    buildInputs = [prev.git];
    patchPhase = ''
      substituteInPlace GNUmakefile \
        --replace "git submodule update --init --recursive" ""
    '';
    nativeCheckInputs = oldAttrs.nativeCheckInputs ++ [prev.busybox];

    installPhase = ''
      runHook preInstall

      mkdir -p "$out/share/blesh/lib"

      cat <<EOF >"$out/share/blesh/lib/_package.sh"
      _ble_base_package_type=nix

      function ble/base/package:nix/update {
        echo "Ble.sh is installed by Nix. You can update it there." >&2
        return 1
      }
      EOF

      make install INSDIR=$out/share/blesh

      runHook postInstall
    '';
  });
}