Separate vendoring script and code generator for pyproject validations

4 files changed, 39 insertions, 39 deletions

diff --git a/setuptools/_vendor/vendored.txt b/setuptools/_vendor/vendored.txt
index 798e2bab..b08b0d6f 100644
--- a/setuptools/_vendor/vendored.txt
+++ b/setuptools/_vendor/vendored.txt
@@ -11,4 +11,3 @@ typing_extensions==4.0.1
 # required for importlib_resources and _metadata on older Pythons
 zipp==3.7.0
 tomli==2.0.1
-# validate-pyproject[all]==0.6.1  # Special handling in tools/vendored, don't uncomment or remove
diff --git a/tools/generate_validation_code.py b/tools/generate_validation_code.py
new file mode 100644
index 00000000..5792110d
--- /dev/null
+++ b/tools/generate_validation_code.py
@@ -0,0 +1,32 @@
+import string
+import subprocess
+import sys
+from tempfile import TemporaryDirectory
+
+from pathlib import Path
+
+
+def generate_pyproject_validation(dest: Path):
+    """
+    Generates validation code for ``pyproject.toml`` based on JSON schemas and the
+    ``validate-pyproject`` library.
+    """
+    cmd = [
+        sys.executable,
+        "-m",
+        "validate_pyproject.vendoring",
+        f"--output-dir={dest}",
+        "--enable-plugins",
+        "setuptools",
+        "distutils",
+        "--very-verbose"
+    ]
+    subprocess.check_call(cmd)
+    print(f"Validation code generated at: {dest}")
+
+
+def main():
+    generate_pyproject_validation(Path("setuptools/config/_validate_pyproject"))
+
+
+__name__ == '__main__' and main()
diff --git a/tools/vendored.py b/tools/vendored.py
index dc1b0c07..cd15adbf 100644
--- a/tools/vendored.py
+++ b/tools/vendored.py
@@ -1,9 +1,6 @@
 import re
 import sys
-import string
 import subprocess
-import venv
-from tempfile import TemporaryDirectory
 
 from path import Path
 
@@ -140,7 +137,6 @@ def update_pkg_resources():
 def update_setuptools():
     vendor = Path('setuptools/_vendor')
     install(vendor)
-    install_validate_pyproject(vendor)
     rewrite_packaging(vendor / 'packaging', 'setuptools.extern')
     rewrite_jaraco_text(vendor / 'jaraco/text', 'setuptools.extern')
     rewrite_jaraco(vendor / 'jaraco', 'setuptools.extern')
@@ -150,38 +146,4 @@ def update_setuptools():
     rewrite_nspektr(vendor / "nspektr", 'setuptools.extern')
 
 
-def install_validate_pyproject(vendor):
-    """``validate-pyproject`` can be vendorized to remove all dependencies"""
-    req = next(
-        (x for x in (vendor / "vendored.txt").lines() if 'validate-pyproject' in x),
-        "validate-pyproject[all]"
-    )
-
-    pkg, _, _ = req.strip(string.whitespace + "#").partition("#")
-    pkg = pkg.strip()
-
-    opts = {}
-    if sys.version_info[:2] >= (3, 10):
-        opts["ignore_cleanup_errors"] = True
-
-    with TemporaryDirectory(**opts) as tmp:
-        env_builder = venv.EnvBuilder(with_pip=True)
-        env_builder.create(tmp)
-        context = env_builder.ensure_directories(tmp)
-        venv_python = getattr(context, 'env_exec_cmd', context.env_exe)
-
-        subprocess.check_call([venv_python, "-m", "pip", "install", pkg])
-        cmd = [
-            venv_python,
-            "-m",
-            "validate_pyproject.vendoring",
-            f"--output-dir={vendor / '_validate_pyproject' !s}",
-            "--enable-plugins",
-            "setuptools",
-            "distutils",
-            "--very-verbose"
-        ]
-        subprocess.check_call(cmd)
-
-
 __name__ == '__main__' and update_vendored()
diff --git a/tox.ini b/tox.ini
index 22c796ff..1b105d5d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -65,6 +65,13 @@ deps =
 commands =
 	python -m tools.vendored
 
+[testenv:generate-validation-code]
+skip_install = True
+deps =
+	validate-pyproject[all]==0.6.1
+commands =
+	python -m tools.generate_validation_code
+
 [testenv:release]
 skip_install = True
 deps =