uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/networking/vpnc-scripts/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, stdenv
+, fetchgit
+, coreutils
+, gawk
+, gnugrep
+, iproute2
+, makeWrapper
+, nettools
+, openresolv
+, systemd
+}:
+
+stdenv.mkDerivation {
+  pname = "vpnc-scripts";
+  version = "unstable-2021-09-24";
+
+  src = fetchgit {
+    url = "https://gitlab.com/openconnect/vpnc-scripts.git";
+    rev = "b749c2cadc2f32e2efffa69302861f9a7d4a4e5f";
+    sha256 = "sha256-DDGpxzQBaOOG+MYDXnVEB6/Q4qmdNM+86XNRNl01UqU=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp vpnc-script $out/bin
+  '';
+
+  preFixup = ''
+    substituteInPlace $out/bin/vpnc-script \
+      --replace "which" "type -P"
+  '' + lib.optionalString stdenv.isLinux ''
+    substituteInPlace $out/bin/vpnc-script \
+      --replace "/sbin/resolvconf" "${openresolv}/bin/resolvconf" \
+      --replace "/usr/bin/resolvectl" "${systemd}/bin/resolvectl"
+  '' + ''
+    wrapProgram $out/bin/vpnc-script \
+      --prefix PATH : "${lib.makeBinPath ([ nettools gawk coreutils gnugrep ] ++ lib.optionals stdenv.isLinux [ openresolv iproute2 ])}"
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.infradead.org/openconnect/";
+    description = "Script for vpnc to configure the network routing and name service";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ jerith666 ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}