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/openapi-generator-cli/example.nix

@@ -0,0 +1,31 @@
+{ openapi-generator-cli, fetchurl, runCommand }:
+
+runCommand "openapi-generator-cli-test" {
+  nativeBuildInputs = [ openapi-generator-cli ];
+  petstore = fetchurl {
+    url = "https://raw.githubusercontent.com/OAI/OpenAPI-Specification/14c0908becbccd78252be49bd92be8c53cd2b9e3/examples/v3.0/petstore.yaml";
+    hash = "sha256-q2D1naR41KwxLNn6vMbL0G+Pl1q4oaDCApsqQfZf7dU=";
+  };
+  config = builtins.toJSON {
+    elmVersion = "0.19";
+    elmPrefixCustomTypeVariants = false;
+  };
+  passAsFile = [ "config" ];
+} ''
+  openapi-generator-cli generate \
+    --input-spec $petstore \
+    --enable-post-process-file \
+    --generator-name elm \
+    --config "$config" \
+    --additional-properties elmEnableCustomBasePaths=true \
+    --output "$out" \
+    ;
+  find $out
+  echo >&2 'Looking for some keywords'
+  set -x
+  grep 'module Api.Request.Pets' $out/src/Api/Request/Pets.elm
+  grep 'createPets' $out/src/Api/Request/Pets.elm
+  grep '"limit"' $out/src/Api/Request/Pets.elm
+  set +x
+  echo "Looks OK!"
+''