vnetod/flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    let
      inherit (builtins) fromTOML readFile substring;

      cargoToml = fromTOML (readFile ./Cargo.toml);
      version = "${cargoToml.package.version}+${substring 0 8 self.lastModifiedDate}.${self.shortRev or "dirty"}";

      mkVnetod = { lib, rustPlatform, vnetodFeatures ? [ ], ... }:
        rustPlatform.buildRustPackage {
          name = "vnetod-${version}";

          src = lib.cleanSource ./.;
          cargoLock.lockFile = ./Cargo.lock;

          buildFeatures = vnetodFeatures;

          doCheck = true;
        };
    in
    {
      overlays = {
        minimal = final: prev: {
          vnetod = final.callPackage mkVnetod { };
        };
        default = final: prev: {
          vnetod = final.callPackage mkVnetod {
            vnetodFeatures = [ "color" ];
          };
        };
      };
    }
    // flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };

        vnetod = pkgs.callPackage mkVnetod { vnetodFeatures = [ "color" ]; };
        minimalVnetod = pkgs.callPackage mkVnetod { };

        docker = pkgs.dockerTools.buildLayeredImage {
          name = "pleshevskiy/vnetod";
          tag = cargoToml.package.version;
          config = {
            Volumes."/data" = { };
            WorkingDir = "/data";
            Entrypoint = [ "${vnetod}/bin/vnetod" ];
          };
        };

        mkApp = prog: {
          type = "app";
          program = "${vnetod}/bin/vnetod";
        };
      in
      {
        apps = {
          default = mkApp vnetod;
          minimal = mkApp minimalVnetod;
        };

        packages = {
          inherit docker vnetod;
          default = vnetod;
          minimal = minimalVnetod;
        };

        devShell = pkgs.mkShell {
          packages = with pkgs; [ cargo rustc rustfmt clippy rust-analyzer ];
          RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
        };
      });
}