squoosh/codecs/mozjpeg/flake.nix

{
  inputs = {
    nixpkgs = {
      url = "github:nixos/nixpkgs/24.05";
    };
    mozjpeg = {
      url = "github:mozilla/mozjpeg/v3.3.1";
      flake = false;
    };
  };
  outputs =
    {
      self,
      nixpkgs,
      mozjpeg,
    }:
    let
      system = "aarch64-darwin";
      pkgs = import nixpkgs { inherit system; };
    in
    with pkgs;
    rec {
      packages.${system} = {
      default = stdenv.mkDerivation {
        name = "mozjpeg-squoosh";
        src = ./.;
        nativeBuildInputs = [ emscripten packages.${system}.mozjpeg ];
        MOZJPEG = packages.${system}.mozjpeg;
        dontConfigure = true;
        buildPhase = ''
          export HOME=$TMPDIR
          emmake make -j$(nproc)
        '';
        installPhase = ''
          mkdir -p $out
          cp enc/*.{wasm,js} $out
        '';
      };
      mozjpeg = stdenv.mkDerivation {
        name = "mozjpeg";
        src = mozjpeg;
        nativeBuildInputs = [
          autoconf
          automake
          libtool
          emscripten
          pkg-config
        ];
        configurePhase = ''
            # $HOME is required for Emscripten to work.
            # See: https://nixos.org/manual/nixpkgs/stable/#emscripten
          	export HOME=$TMPDIR
          	autoreconf -ifv
            emconfigure ./configure \
              --disable-shared \
              --without-turbojpeg \
              --without-simd \
              --without-arith-enc \
              --without-arith-dec \
              --with-build-date=squoosh \
              --prefix=$out
        '';
        buildPhase = ''
        	export HOME=$TMPDIR
        	emmake make V=1 -j$(nproc) --trace 
        '';
        installPhase = ''
          make install
          cp *.h $out/include
          cp rdswitch.o $out/lib
        '';
        dontFixup = true;

      };
      };
      devShells.${system}.default = pkgs.mkShell {
        packages = [
          autoconf
          automake
          libtool
          emscripten
          pkg-config
        ];
        shellHook = ''
          echo "Path to MozJPEG: ${mozjpeg}"
        '';
      };
    };
}