{
  description = "UL Computer Society Open Governance";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-unstable";
    utils.url   = "github:numtide/flake-utils";
    bfom.url = "gitlab:silver_rust/bfom";
  };

  outputs = { self, nixpkgs, utils, bfom }: utils.lib.eachDefaultSystem (system:
  let
    pkgs = import nixpkgs { 
      system = "${system}"; 
      config = {
        allowUnfree = true; 
        permittedInsecurePackages = [
          # for obsidian
          "electron-25.9.0"
          # for wkhtmltopdf
          "qtwebkit-5.212.0-alpha4"
        ];
      };
    };
  in rec {
    # `nix develop`
    devShell = pkgs.mkShell {
      nativeBuildInputs = with pkgs; [ obsidian ];
      shellHook = ''
        ${pkgs.obsidian}/bin/obsidian &
        BG_PID=$!
        trap "kill -9 $BG_PID" EXIT
      '';
    };


    apps.bfom = {
      type = "app";
      program = "${bfom.defaultPackage.x86_64-linux}/bin/cargo-bfom";
    };

    packages = {
      handovers =  pkgs.writeShellScriptBin "format_handovers" ''
        export PATH=${pkgs.lib.makeBinPath [ pkgs.wkhtmltopdf  bfom.defaultPackage.x86_64-linux ]}:$PATH
        ${./_scripts/format_handovers.sh}
      '';
    };

  });
}