Fix handling cpython_module type recipe (#74)

#36 had a bug not supporting `cpython_module` type recipes.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

integration_tests/recipes/README.md

@@ -6,6 +6,7 @@ This directory contains a few curated recipes to test the build process of pyodi
 - orjson: Tests rust extension modules.
 - zlib: Tests static libraries.
 - geos: Tests shared libraries.
+- pydoc_data: Unvendored cpython module
 
 ### For maintainers
 

integration_tests/recipes/pydoc_data/meta.yaml

@@ -0,0 +1,19 @@
+package:
+  name: pydoc_data
+  version: 1.0.0 # Nonsense
+  tag:
+    - always
+  top-level:
+    - pydoc_data
+source:
+  path: src
+build:
+  type: cpython_module
+  script: |
+    wget ${PYTHON_ARCHIVE_URL} -O Python-${PYVERSION}.tgz
+    tar -xf Python-${PYVERSION}.tgz
+    cd Python-${PYVERSION}/Lib
+
+    tar --exclude=__pycache__ -cf - pydoc_data | tar -C ${PKG_BUILD_DIR} -xf -
+about:
+  license: PSF

integration_tests/recipes/pydoc_data/src/pyproject.toml

@@ -0,0 +1,23 @@
+[project]
+name = "pydoc_data"
+authors = [
+  { name="Pyodide"},
+]
+description = "Unvendored pydoc_data for Pyodide"
+version = "1.0.0"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.sdist]
+ignore-vcs = true
+
+[tool.hatch.build.targets.wheel]
+ignore-vcs = true
+include = [
+  "pydoc_data/",
+]
+exclude = [
+  "Python-*",
+]

pyodide_build/buildpkg.py

@@ -145,16 +145,14 @@ def get_builder(
         recipe = Path(recipe).resolve()
         _, config = _load_recipe(recipe)
         match config.build.package_type:
-            case "package":
+            case "package" | "cpython_module":
                 builder = RecipeBuilderPackage
             case "static_library":
                 builder = RecipeBuilderStaticLibrary
             case "shared_library":
                 builder = RecipeBuilderSharedLibrary
             case _:
-                raise ValueError(
-                    f"Unknown package type: {config.build_metadata.package_type}"
-                )
+                raise ValueError(f"Unknown package type: {config.build.package_type}")
 
         return builder(recipe, build_args, build_dir, force_rebuild, continue_)