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/weechat-matrix-bridge/default.nix

@@ -0,0 +1,51 @@
+{ lib, stdenv, curl, fetchFromGitHub, cjson, olm, luaffi }:
+
+stdenv.mkDerivation {
+  pname = "weechat-matrix-bridge";
+  version = "unstable-2018-11-19";
+  src = fetchFromGitHub {
+    owner = "torhve";
+    repo = "weechat-matrix-protocol-script";
+    rev = "8d32e90d864a8f3f09ecc2857cd5dd6e39a8c3f7";
+    sha256 = "0qqd6qmkrdc0r3rnl53c3yp93fbcz7d3mdw3vq5gmdqxyym4s9lj";
+  };
+
+  patches = [
+    ./library-path.patch
+  ];
+
+  buildInputs = [ curl cjson olm luaffi ];
+
+  postPatch = ''
+    substituteInPlace matrix.lua \
+      --replace "/usr/bin/curl" "${curl}/bin/curl" \
+      --replace "__NIX_LIB_PATH__" "$out/lib/?.so" \
+      --replace "__NIX_OLM_PATH__" "$out/share/?.lua"
+
+    substituteInPlace olm.lua \
+      --replace "__NIX_LIB_PATH__" "$out/lib/?.so"
+  '';
+
+  passthru.scripts = [ "matrix.lua" ];
+
+  installPhase = ''
+    mkdir -p $out/{share,lib}
+
+    cp {matrix.lua,olm.lua} $out/share
+    cp ${cjson}/lib/lua/${cjson.lua.luaversion}/cjson.so $out/lib/cjson.so
+    cp ${olm}/lib/libolm.so $out/lib/libolm.so
+    cp ${luaffi}/lib/lua/${luaffi.lua.luaversion}/ffi.so $out/lib/ffi.so
+  '';
+
+  meta = with lib; {
+    description = "A WeeChat script in Lua that implements the matrix.org chat protocol";
+    homepage = "https://github.com/torhve/weechat-matrix-protocol-script";
+    maintainers = with maintainers; [ ];
+    license = licenses.mit; # see https://github.com/torhve/weechat-matrix-protocol-script/blob/0052e7275ae149dc5241226391c9b1889ecc3c6b/matrix.lua#L53
+    platforms = platforms.unix;
+
+    # As of 2019-06-30, all of the dependencies are available on macOS but the
+    # package itself does not build.
+    broken = stdenv.isDarwin;
+  };
+}

pkgs/applications/networking/irc/weechat/scripts/weechat-matrix-bridge/library-path.patch

@@ -0,0 +1,28 @@
+diff --git a/matrix.lua b/matrix.lua
+index b79f500..32b37a2 100644
+--- a/matrix.lua
++++ b/matrix.lua
+@@ -43,6 +43,9 @@ This script maps this as follows:
+ 
+ ]]
+ 
++package.cpath = package.cpath .. ";__NIX_LIB_PATH__"
++package.path = package.path .. ";__NIX_OLM_PATH__"
++
+ local json = require 'cjson' -- apt-get install lua-cjson
+ local olmstatus, olm = pcall(require, 'olm') -- LuaJIT olm FFI binding ln -s ~/olm/olm.lua /usr/local/share/lua/5.1
+ local w = weechat
+diff --git a/olm.lua b/olm.lua
+index 114649c..4828371 100644
+--- a/olm.lua
++++ b/olm.lua
+@@ -17,6 +17,9 @@
+  * limitations under the License.
+  */
+ --]]
++
++package.cpath = package.cpath .. ";__NIX_LIB_PATH__"
++
+ local ffi = require'ffi'
+ 
+ ffi.cdef[[