91 lines
2.7 KiB
Python
91 lines
2.7 KiB
Python
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import ast
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import json
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import textwrap
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from pathlib import Path
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def iter_namespace_pkgs(namespace):
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parts = namespace.split(".")
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for i in range(len(parts)):
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yield ".".join(parts[: i + 1])
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def build_namespace_package(tmpdir, name, version="1.0", impl="pkg_resources"):
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src_dir = tmpdir / name
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src_dir.mkdir()
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setup_py = src_dir / 'setup.py'
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namespace, _, rest = name.rpartition('.')
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namespaces = list(iter_namespace_pkgs(namespace))
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setup_args = {
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"name": name,
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"version": version,
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"packages": namespaces,
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}
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if impl == "pkg_resources":
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tmpl = '__import__("pkg_resources").declare_namespace(__name__)'
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setup_args["namespace_packages"] = namespaces
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elif impl == "pkgutil":
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tmpl = '__path__ = __import__("pkgutil").extend_path(__path__, __name__)'
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else:
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raise ValueError(f"Cannot recognise {impl=} when creating namespaces")
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args = json.dumps(setup_args, indent=4)
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assert ast.literal_eval(args) # ensure it is valid Python
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script = textwrap.dedent(
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"""\
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import setuptools
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args = {args}
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setuptools.setup(**args)
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"""
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).format(args=args)
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setup_py.write_text(script, encoding='utf-8')
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ns_pkg_dir = Path(src_dir, namespace.replace(".", "/"))
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ns_pkg_dir.mkdir(parents=True)
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for ns in namespaces:
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pkg_init = src_dir / ns.replace(".", "/") / '__init__.py'
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pkg_init.write_text(tmpl, encoding='utf-8')
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pkg_mod = ns_pkg_dir / (rest + '.py')
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some_functionality = 'name = {rest!r}'.format(**locals())
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pkg_mod.write_text(some_functionality, encoding='utf-8')
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return src_dir
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def build_pep420_namespace_package(tmpdir, name):
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src_dir = tmpdir / name
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src_dir.mkdir()
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pyproject = src_dir / "pyproject.toml"
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namespace, _, rest = name.rpartition(".")
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script = f"""\
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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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[project]
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name = "{name}"
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version = "3.14159"
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"""
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pyproject.write_text(textwrap.dedent(script), encoding='utf-8')
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ns_pkg_dir = Path(src_dir, namespace.replace(".", "/"))
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ns_pkg_dir.mkdir(parents=True)
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pkg_mod = ns_pkg_dir / (rest + ".py")
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some_functionality = f"name = {rest!r}"
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pkg_mod.write_text(some_functionality, encoding='utf-8')
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return src_dir
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def make_site_dir(target):
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"""
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Add a sitecustomize.py module in target to cause
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target to be added to site dirs such that .pth files
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are processed there.
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"""
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sc = target / 'sitecustomize.py'
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target_str = str(target)
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tmpl = '__import__("site").addsitedir({target_str!r})'
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sc.write_text(tmpl.format(**locals()), encoding='utf-8')
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