cpython: define list of test packages in distribution

I've been wanting to do this for a while so downstream consumers
can filter test packages without having to maintain their own
lists of package names.

Author: indygreg

README.rst

@@ -304,6 +304,10 @@ python_stdlib
    Relative path to Python's standard library (where ``.py`` and resource
    files are located).
 
+python_stdlib_test_packages
+   Array of strings of Python packages that define tests. (Version 4 or above
+   only.)
+
 link_mode
    How `libpython` is linked. Values can be one of the following:
 

cpython-unix/build.py

@@ -15,7 +15,12 @@
 import docker
 
 from pythonbuild.buildenv import build_environment
-from pythonbuild.cpython import derive_setup_local, parse_config_c, parse_setup_line
+from pythonbuild.cpython import (
+    derive_setup_local,
+    parse_config_c,
+    parse_setup_line,
+    STDLIB_TEST_PACKAGES,
+)
 from pythonbuild.docker import build_docker_image, get_image
 from pythonbuild.downloads import DOWNLOADS
 from pythonbuild.logging import log, set_logger
@@ -649,6 +654,7 @@ def build_cpython(
             "python_exe": "install/bin/%s" % fully_qualified_name,
             "python_include": "install/include/%s" % fully_qualified_name,
             "python_stdlib": "install/lib/python%s" % entry["version"][0:3],
+            "python_stdlib_test_packages": sorted(STDLIB_TEST_PACKAGES),
             "link_mode": "static",
             "build_info": python_build_info(
                 build_env,

cpython-windows/build.py

@@ -7,7 +7,6 @@
 import concurrent.futures
 import datetime
 import json
-import multiprocessing
 import os
 import pathlib
 import re
@@ -18,7 +17,7 @@
 import zipfile
 
 from pythonbuild.downloads import DOWNLOADS
-from pythonbuild.cpython import parse_config_c
+from pythonbuild.cpython import parse_config_c, STDLIB_TEST_PACKAGES
 from pythonbuild.utils import (
     create_tar_from_directory,
     download_entry,
@@ -1749,6 +1748,7 @@ def build_cpython(arch: str, profile):
             "python_exe": "install/python.exe",
             "python_include": "install/include",
             "python_stdlib": "install/Lib",
+            "python_stdlib_test_packages": sorted(STDLIB_TEST_PACKAGES),
             "link_mode": "static" if static else "shared",
             "build_info": build_info,
             "licenses": DOWNLOADS["cpython-3.7"]["licenses"],

pythonbuild/cpython.py

@@ -66,6 +66,22 @@
     b"_testcapi"
 }
 
+# Packages that define tests.
+STDLIB_TEST_PACKAGES = {
+    "bsddb.test",
+    "ctypes.test",
+    "distutils.tests",
+    "email.test",
+    "idlelib.idle_test",
+    "json.tests",
+    "lib-tk.test",
+    "lib2to3.tests",
+    "sqlite3.test",
+    "test",
+    "tkinter.test",
+    "unittest.test",
+}
+
 
 def parse_setup_line(line: bytes, variant: str):
     """Parse a line in a ``Setup.*`` file."""