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/applications/networking/irc/weechat/scripts/wee-slack/default.nix

@@ -0,0 +1,48 @@
+{ lib, stdenv, substituteAll, buildEnv, fetchFromGitHub, python3Packages }:
+
+stdenv.mkDerivation rec {
+  pname = "wee-slack";
+  version = "2.8.0";
+
+  src = fetchFromGitHub {
+    repo = "wee-slack";
+    owner = "wee-slack";
+    rev = "v${version}";
+    sha256 = "0xfklr0gsc9jgxfyrrb2j756lclz9g8imcb0pk0xgyj8mhsw23zk";
+  };
+
+  patches = [
+    (substituteAll {
+      src = ./libpath.patch;
+      env = "${buildEnv {
+        name = "wee-slack-env";
+        paths = with python3Packages; [
+          websocket-client
+          six
+        ];
+      }}/${python3Packages.python.sitePackages}";
+    })
+    ./load_weemoji_path.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace wee_slack.py --subst-var out
+  '';
+
+  passthru.scripts = [ "wee_slack.py" ];
+
+  installPhase = ''
+    mkdir -p $out/share
+    cp wee_slack.py $out/share/wee_slack.py
+    install -D -m 0444 weemoji.json $out/share/wee-slack/weemoji.json
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/wee-slack/wee-slack";
+    license = licenses.mit;
+    maintainers = with maintainers; [ willibutz ];
+    description = ''
+      A WeeChat plugin for Slack.com. Synchronizes read markers, provides typing notification, search, etc..
+    '';
+  };
+}