ossw-fw/flake.nix

{
  inputs.nixpkgs.url = "nixpkgs";
  inputs.nixpkgs-unstable.url = "nixpkgs-unstable";

  outputs = { self, nixpkgs, nixpkgs-unstable, ... }:
    let
      supportedSystems = [ "x86_64-linux" "i686-linux" "aarch64-linux" ];
      forAllSystems' = systems: f: nixpkgs.lib.genAttrs systems f;
      forAllSystems = forAllSystems' supportedSystems;
    in
    {
      overlay = prev: final:
        {
          xtensa-elf-binutils = prev.callPackage ./nix/xtensa-elf-binutils.nix {};
          xtensa-elf-gcc = prev.callPackage ./nix/xtensa-elf-gcc.nix {};
        };
      defaultPackage = forAllSystems (system:
        let
          pkgs = import nixpkgs
            { inherit system;
              overlays = [ self.overlay ];
            };
        in
          pkgs.xtensa-elf-gcc
      );

      packages = forAllSystems (system:
        import nixpkgs
          { inherit system;
            overlays = [ self.overlay ];
          }
      );

      devShell = forAllSystems (system:
        let
          pkgs = import nixpkgs
            { inherit system;
              overlays = [ self.overlay ];
            };
        in
          pkgs.mkShell {
            buildInputs = with pkgs; [
              xtensa-elf-gcc
              xtensa-elf-binutils
              (import nixpkgs-unstable { inherit system; }).esptool
              qemu
              meson
              ninja
            ];
          }
      );
    };
}