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/development/ruby-modules/bundler-env/default.nix

@@ -0,0 +1,75 @@
+{ ruby, lib, callPackage, defaultGemConfig, buildEnv, runCommand
+, bundler, rsync
+}@defs:
+
+{ name ? null
+, pname ? null
+, gemdir ? null
+, gemfile ? null
+, lockfile ? null
+, gemset ? null
+, groups ? ["default"]
+, ruby ? defs.ruby
+, copyGemFiles ? false # Copy gem files instead of symlinking
+, gemConfig ? defaultGemConfig
+, postBuild ? null
+, document ? []
+, meta ? {}
+, ignoreCollisions ? false
+, passthru ? {}
+, ...
+}@args:
+
+let
+  inherit (import ../bundled-common/functions.nix {inherit lib ruby gemConfig groups; }) genStubsScript;
+
+  basicEnv = (callPackage ../bundled-common { inherit bundler; }) (args // { inherit pname name; mainGemName = pname; });
+
+  inherit (basicEnv) envPaths;
+  # Idea here is a mkDerivation that gen-bin-stubs new stubs "as specified" -
+  # either specific executables or the bin/ for certain gem(s), but
+  # incorporates the basicEnv as a requirement so that its $out is in our path.
+
+  # When stubbing the bins for a gem, we should use the gem expression
+  # directly, which means that basicEnv should somehow make it available.
+
+  # Different use cases should use different variations on this file, rather
+  # than the expression trying to deduce a use case.
+
+  # The basicEnv should be put into passthru so that e.g. nix-shell can use it.
+in
+  if pname == null then
+    basicEnv // { inherit name basicEnv; }
+  else
+    let
+      bundlerEnvArgs = {
+        inherit ignoreCollisions;
+
+        name = basicEnv.name;
+
+        paths = envPaths;
+        pathsToLink = [ "/lib" ];
+
+        postBuild = genStubsScript {
+          inherit lib ruby bundler groups;
+          confFiles = basicEnv.confFiles;
+          binPaths = [ basicEnv.gems.${pname} ];
+        } + lib.optionalString (postBuild != null) postBuild;
+
+        meta = { platforms = ruby.meta.platforms; } // meta;
+        passthru = basicEnv.passthru // {
+          inherit basicEnv;
+          inherit (basicEnv) env;
+        } // passthru;
+      };
+    in
+      if copyGemFiles then
+        runCommand basicEnv.name bundlerEnvArgs ''
+          mkdir -p $out
+          for i in $paths; do
+            ${rsync}/bin/rsync -a $i/lib $out/
+          done
+          eval "$postBuild"
+        ''
+      else
+        buildEnv bundlerEnvArgs