mirror of
https://github.com/ilyakooo0/nixpkgs.git
synced 2024-10-16 09:28:35 +03:00
e36b4564d2
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.
60 lines
1.2 KiB
Nix
60 lines
1.2 KiB
Nix
{ stdenv
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, cmake
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, python3
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, writeTextFile
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, protobuf
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, src
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, version
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}:
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let
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pyproject_toml = writeTextFile {
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name = "pyproject.toml";
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text = ''
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[build-system]
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requires = ["setuptools"]
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build-backend = "setuptools.build_meta"
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[tool.setuptools]
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include-package-data = true
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[tool.setuptools.packages.find]
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where = ["src"]
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[tool.setuptools.package-data]
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"*" = ["nanopb.proto"]
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[project]
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name = "nanopb"
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version = "${version}"
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dependencies = [
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"setuptools",
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"protobuf",
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"six"
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]
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'';
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};
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in
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stdenv.mkDerivation {
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pname = "nanopb-generator-out";
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inherit src version;
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nativeBuildInputs = [ cmake protobuf python3 ];
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cmakeFlags = [
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"-Dnanopb_BUILD_RUNTIME=OFF"
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"-Dnanopb_BUILD_GENERATOR=ON"
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"-Dnanopb_PYTHON_INSTDIR_OVERRIDE=$out/lib/python/site-packages"
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];
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preConfigure = ''
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cmakeFlags+=" -Dnanopb_PYTHON_INSTDIR_OVERRIDE=$out/lib/python/site-packages"
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'';
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postInstall = ''
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rm -rf $out/include
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rm -rf $out/lib/cmake
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ln -s $out/lib/python/site-packages $out/src
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ln -s ${pyproject_toml} $out/pyproject.toml
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'';
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}
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