fastsa/flake.nix

{
  description = "Micro Optical Spectrum Analyzer";

  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-23.05;

  outputs = { self, nixpkgs }:
    let
      pkgs = import nixpkgs { system = "x86_64-linux"; };
      imgui_dir = "${pkgs.imgui}/include/imgui";
      pocketfft = pkgs.fetchgit {
        url = "https://gitlab.mpcdf.mpg.de/mtr/pocketfft.git";
        rev = "ecd78caa1c862e18fb1a55bcd4e30a05430b01f6";
        hash = "sha256-xl7Tr1A1cqXhAL1Bljfk68R3AB1xOgkH15LHKxjYoSc=";
      };
    in rec {
      packages.x86_64-linux.microsa = pkgs.stdenv.mkDerivation {
        name = "microsa";
        src = self;
        nativeBuildInputs = [ pkgs.pkg-config ];
        propagatedBuildInputs = [ pkgs.wayland pkgs.glfw-wayland pkgs.libffi pkgs.alsa-lib ];
        preBuild = ''
          export IMGUI_DIR=${imgui_dir}
          export POCKETFFT_DIR=${pocketfft}
        '';
        installPhase = ''
          mkdir -p $out/bin
          cp microsa $out/bin
        '';
      };
      devShell.x86_64-linux = pkgs.mkShell {
        name = "microsa-dev-shell";
        buildInputs = packages.x86_64-linux.microsa.nativeBuildInputs ++ packages.x86_64-linux.microsa.propagatedBuildInputs;
        shellHook = packages.x86_64-linux.microsa.preBuild;
      };
      defaultPackage.x86_64-linux = packages.x86_64-linux.microsa;
    };
}