Nix flake for devshell with chkservice (https://github.com/linuxenko/chkservice)

flake.nix

{
  description = "chkservice devshell";

  outputs = { self, nixpkgs }:
  let
    pkgs = nixpkgs.legacyPackages.x86_64-linux;
    chkservice = pkgs.stdenv.mkDerivation {
      name = "chkservice";
      src = pkgs.fetchFromGitHub {
        owner = "linuxenko";
        repo = "chkservice";
        rev = "0.3";
        sha256 = "sha256-ZllO6Ag+OgAkQp6jSv000NUEskXFuhMcCo83A4Wp2zU=";
      };
      buildInputs = with pkgs; [
        pkg-config
        systemd
        ncurses
      ];
      nativeBuildInputs = with pkgs; [
        cmake
        extra-cmake-modules
      ];
    };
  in {
    packages.x86_64-linux.hello = pkgs.hello;
    defaultPackage.x86_64-linux = self.packages.x86_64-linux.hello;
    devShell.x86_64-linux = pkgs.mkShell {
      buildInputs = with pkgs; [ chkservice rnix-lsp ];
    };
  };
}