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/admin/drawterm/default.nix

@@ -0,0 +1,37 @@
+{ stdenv
+, lib
+, fetchgit
+, xorg
+}:
+
+stdenv.mkDerivation rec {
+  pname = "drawterm";
+  version = "unstable-2021-10-02";
+
+  src = fetchgit {
+    url = "git://git.9front.org/plan9front/drawterm";
+    rev = "c6f547e1a46ebbf7a290427fe3a0b66932d671a0";
+    sha256 = "09v2vk5s23q0islfz273pqy696zhzh3gqi25hadr54lif0511wsl";
+  };
+
+  buildInputs = [
+    xorg.libX11
+    xorg.libXt
+  ];
+
+  # TODO: macos
+  makeFlags = [ "CONF=unix" ];
+
+  installPhase = ''
+    install -Dm755 -t $out/bin/ drawterm
+    install -Dm644 -t $out/man/man1/ drawterm.1
+  '';
+
+  meta = with lib; {
+    description = "Connect to Plan9 CPU servers from other operating systems.";
+    homepage = "https://drawterm.9front.org/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ luc65r ];
+    platforms = platforms.linux;
+  };
+}