final: prev: let inpPython = final.python310; in { nftables-prometheus-exporter = prev.stdenv.mkDerivation rec { name = "nftables-prometheus-exporter"; src = ./nftables-prometheus-exporter.py; phases = [ "buildPhase" "checkPhase" "installPhase" ]; python = inpPython.withPackages (ps: with ps; []); buildPhase = '' substituteAll $src nftables-prometheus-exporter ''; doCheck = true; checkPhase = '' ${python}/bin/python -m py_compile nftables-prometheus-exporter ''; installPhase = '' install -m 0755 -D -t $out/bin \ nftables-prometheus-exporter ''; }; }