Miniupnpd with nftables override

miniupnpd.nix

# Rebuild the package with nftables support
# Module expects scripts named iptables_ so copy nft versions to those names
nixpkgs.config.packageOverrides = pkgs: {
  miniupnpd = pkgs.miniupnpd.overrideAttrs (o:{
    buildInputs = o.buildInputs ++ [ pkgs.libmnl pkgs.libnftnl pkgs.openssl ];
    makefile = "Makefile.linux_nft";
    configureFlags = [ "--firewall=nftables" ];
    postFixup = ''
      cp $out/etc/miniupnpd/nft_init.sh $out/etc/miniupnpd/iptables_init.sh
      cp $out/etc/miniupnpd/nft_removeall.sh $out/etc/miniupnpd/iptables_removeall.sh
      for script in $out/etc/miniupnpd/{nft,iptables}_{init,removeall}.sh
      do
        wrapProgram $script --set PATH '${scriptBinEnv}:$PATH'
      done
    '';
  });
};