mirror of
https://github.com/NixOS/nixpkgs.git
synced 2026-07-06 17:13:24 -05:00
90 lines
2.8 KiB
Nix
90 lines
2.8 KiB
Nix
{
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lib,
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buildPythonPackage,
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fetchFromGitHub,
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python,
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pkgs,
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pycparser,
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pytestCheckHook,
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setuptools-git-versioning,
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setuptools,
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writableTmpDirAsHomeHook,
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stdenvNoCC,
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}:
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let
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inherit (stdenvNoCC) targetPlatform;
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systemDir = "${targetPlatform.parsed.kernel.name}-${targetPlatform.parsed.cpu.name}";
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libExt = targetPlatform.extensions.sharedLibrary;
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in
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buildPythonPackage (finalAttrs: {
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pname = "wasmtime";
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version = "46.0.1";
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pyproject = true;
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src = fetchFromGitHub {
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owner = "bytecodealliance";
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repo = "wasmtime-py";
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tag = finalAttrs.version;
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hash = "sha256-PWMrmr9PPi98lQe5+KaY4bPLOYyJ5qYugMJwVwwnuwA=";
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};
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postPatch = ''
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substituteInPlace pyproject.toml \
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--replace-fail "setuptools-git-versioning>=2.0,<3" "setuptools-git-versioning" \
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--replace-fail 'build-backend = "backend"' 'build-backend = "setuptools.build_meta"'
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# `wasmtime/_{extern,types,value}.py` erroneously report unreachable statements
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substituteInPlace mypy.ini \
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--replace-fail "warn_unreachable = True" "warn_unreachable = False"
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# Don't run mypy via pytest-mypy (type checking breaks easily)
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substituteInPlace pytest.ini \
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--replace-fail 'addopts = --doctest-modules --mypy' 'addopts = --doctest-modules'
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sed -i '/^backend-path = \[/,/^\]/d' pyproject.toml
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# Use nixpkgs' wasmtime instead of downloading prebuilt C API artifacts.
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mkdir -p wasmtime/${systemDir}
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ln -s ${lib.getLib pkgs.wasmtime}/lib/libwasmtime${libExt} wasmtime/${systemDir}/_libwasmtime${libExt}
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'';
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build-system = [
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setuptools
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setuptools-git-versioning
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];
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buildInputs = [ pkgs.wasmtime ];
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postInstall = ''
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# Ensure the installed module can find the shared library at runtime
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mkdir -p "$out/${python.sitePackages}/wasmtime/${systemDir}"
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ln -sf ${lib.getLib pkgs.wasmtime}/lib/libwasmtime${libExt} "$out/${python.sitePackages}/wasmtime/${systemDir}/_libwasmtime${libExt}"
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'';
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nativeCheckInputs = [
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pycparser
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pytestCheckHook
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writableTmpDirAsHomeHook
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];
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pythonImportsCheck = [ "wasmtime" ];
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preCheck = ''
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# cbindgen.py checks bindings against C headers during test collection.
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ln -s ${lib.getDev pkgs.wasmtime}/include wasmtime/include
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# hardening options interfere with pycparser's CC call
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export NIX_HARDENING_ENABLE=""
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# $out is first in path which causes "import file mismatch"
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export PYTHONPATH="$PWD:$PYTHONPATH"
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'';
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meta = {
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description = "Python WebAssembly runtime powered by Wasmtime";
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homepage = "https://github.com/bytecodealliance/wasmtime-py";
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changelog = "https://github.com/bytecodealliance/wasmtime-py/releases/tag/${finalAttrs.src.tag}";
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license = lib.licenses.WITH lib.licenses.asl20 lib.licenses.llvm-exception;
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maintainers = [ lib.maintainers.fab ] ++ pkgs.wasmtime.meta.maintainers;
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};
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})
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