nixos/mininet: wrap with mininet in PYTHONPATH and ifconfig in PATH

let

  cfg = config.programs.mininet;

  telnet = pkgs.runCommand "inetutils-telnet"

    { }

    ''

      mkdir -p $out/bin

      ln -s ${pkgs.inetutils}/bin/telnet $out/bin

    '';

  generatedPath = with pkgs; makeSearchPath "bin" [

    iperf ethtool iproute2 socat

    iperf

    ethtool

    iproute2

    socat

    # mn errors out without a telnet binary

    # pkgs.inetutils brings an undesired ifconfig into PATH see #43105

    nettools

    telnet

  ];

  pyEnv = pkgs.python.withPackages(ps: [ ps.mininet-python ]);

  pyEnv = pkgs.python3.withPackages (ps: [ ps.mininet-python ]);

  mnexecWrapped = pkgs.runCommand "mnexec-wrapper"

    { nativeBuildInputs = [ pkgs.makeWrapper pkgs.pythonPackages.wrapPython ]; }

    { nativeBuildInputs = [ pkgs.makeWrapper pkgs.python3Packages.wrapPython ]; }

    ''

      makeWrapper ${pkgs.mininet}/bin/mnexec \

        $out/bin/mnexec \

        --prefix PATH : "${generatedPath}"

      ln -s ${pyEnv}/bin/mn $out/bin/mn

      # mn errors out without a telnet binary

      # pkgs.inetutils brings an undesired ifconfig into PATH see #43105

      ln -s ${pkgs.inetutils}/bin/telnet $out/bin/telnet

      makeWrapper ${pyEnv}/bin/mn \

        $out/bin/mn \

        --prefix PYTHONPATH : "${pyEnv}/${pyEnv.sitePackages}" \

        --prefix PATH : "${generatedPath}"

    '';

in

{