{ pkgs ? import <nixpkgs> { } }:
#{ writeScript ? pkgs.writeScript, lib ? pkgs.lib, stdenv ? pkgs.stdenv }:
with pkgs;
let
  compileShell = src: buildInputs: name:
    stdenv.mkDerivation {
      inherit name src;
      buildInputs = buildInputs ++ [ makeWrapper ];
      unpackPhase = "true";
      installPhase = ''
        mkdir -p $out/bin && cp $src $out/bin/${name}
              wrapProgram $out/bin/${name} --suffix PATH : ${
                lib.makeSearchPath "bin" buildInputs
              }
            '';
    };
  makeWrap = cmd: executable: name:
    pkgs.runCommand name { buildInputs = [ makeWrapper ]; } ''
      makeWrapper ${executable} $out/bin/${name} --add-flags ${cmd}
    '';
in lib.mapAttrs (k: f: f k) {
  backup = compileShell ./backup.sh (with pkgs; [ utillinux duplicity ]);
  screenshot_public =
    compileShell ./screenshot_public.sh (with pkgs; [ scrot xclip rsync ]);
  # impure
  y-cal-widget = makeWrap ./cal.py "${
      python3.withPackages (p: [ (p.toPythonModule gcalcli) p.i3ipc ])
    }/bin/python";
  absorb = makeWrap ./absorb.py "${
    python3.withPackages (p: [ p.requests ])
  }/bin/python";
}