nixpkgs/pkgs/by-name/na/nanopb/generator.nix

{ python3
, stdenvNoCC
, protobuf
, version
, generator-out
}:
stdenvNoCC.mkDerivation {
  pname = "nanopb-generator";
  inherit version;

  dontUnpack = true;

  nativeBuildInputs = [ python3.pkgs.wrapPython ];

  propagatedBuildInputs = [
    protobuf
    python3.pkgs.nanopb-proto
  ];

  installPhase = ''
    mkdir -p $out/bin
    cp ${generator-out}/bin/protoc-gen-nanopb $out/bin/
    cp ${generator-out}/bin/nanopb_generator $out/bin/
    wrapPythonPrograms
    cp ${generator-out}/bin/nanopb_generator.py $out/bin/
  '';
}
nanopb: 0.4.6 -> 0.4.8 This commit: - Bumps the nanopb version - Adds all runtime configuration options - Implements proper cross-compilation support which is the main use-case of the library. - Uses newer `finalAttrs` form of `mkDerivation` to allow for easier attribute overrides. The cross-compilation support is achieved by splitting the package into two sub-packages consisting of the build-time generator and the runtime library. Nanopb explicitely supports this by providing specialized `GENERATOR` and `RUNTIME` CMake configuration options. The top-level package uses `propagatedNativeBuildInputs` and `propagatedBuildInputs` to propagate the sub-packages and also adds convenient symlinks to make certain use cases easier. == GENERATOR == The generator is a mostly ready-to-be-packaged python module tree. We patch the library to also include the missing `__init__.py` and we also fix the `PYTHON_INSTDIR` variable to follow best practice and to prevent the library from attempting to install to a global directory. We package the python module using `buildPythonPackage` and internally override python in order to wrap the `nanopb_generator.py` executable. We do not wrap `nanob_generator.py` due to it also being imported directly from python when used through `protoc-gen-nanopb`. == RUNTIME == The runtime is a simple library that consists of the common functionality among generated headers/sources. It is configured through `preprocessor definitions` and consumer projects must be compiled with the same definitions. This is currently achieved by exposing all configuration options through the top-level overrides and patching the CMakeLists.txt so that the definitions are added to the to-be-installed CMake targets as PUBLIC properties. 2024-02-13 00:25:13 +00:00			`{ python3`
			`, stdenvNoCC`
			`, protobuf`
			`, version`
			`, generator-out`
			`}:`
			`stdenvNoCC.mkDerivation {`
			`pname = "nanopb-generator";`
			`inherit version;`

			`dontUnpack = true;`

			`nativeBuildInputs = [ python3.pkgs.wrapPython ];`

			`propagatedBuildInputs = [`
			`protobuf`
			`python3.pkgs.nanopb-proto`
			`];`

			`installPhase = ''`
			`mkdir -p $out/bin`
			`cp ${generator-out}/bin/protoc-gen-nanopb $out/bin/`
			`cp ${generator-out}/bin/nanopb_generator $out/bin/`
			`wrapPythonPrograms`
			`cp ${generator-out}/bin/nanopb_generator.py $out/bin/`
			`'';`
			`}`