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GH-145273: warn when we can't find the standard library #145274

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Merged
FFY00 merged 12 commits into from
Mar 2, 2026
Merged

GH-145273: warn when we can't find the standard library #145274

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08846b2
GH-145273: warn when we can't find the standard library
FFY00 Feb 26, 2026
d38285d
Fix test_embed
FFY00 Feb 26, 2026
c55803d
Create stdlib dir on test_init_pybuilddir{,_win32}
FFY00 Feb 26, 2026
3a67467
Resolve symlinks before file check (needed for Windows)
FFY00 Feb 26, 2026
aa6014a
Revert "Resolve symlinks before file check (needed for Windows)"
FFY00 Feb 27, 2026
540d965
Fix test.support.PythonSymlink on Windows source builds
FFY00 Feb 27, 2026
9cb1166
Fix test_embed by creating expected paths instead of ignoring stderr
FFY00 Feb 27, 2026
d8b5280
Don't blindly create paths
FFY00 Feb 28, 2026
36e43a7
Fix test_init_is_python_build_with_home
FFY00 Feb 28, 2026
8d63f14
Fix test_init_setpythonhome
FFY00 Feb 28, 2026
e69cddb
Don't create VPATH subdirs
FFY00 Mar 2, 2026
460501d
Create stdlibdir in test_init_pybuilddir_win32
FFY00 Mar 2, 2026
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Fix test_embed by creating expected paths instead of ignoring stderr 
Signed-off-by: Filipe Laíns <lains@riseup.net>
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@FFY00
FFY00 committed Feb 27, 2026
commit 9cb1166493fc5b0116c5e96bc56becc2e98c2bc0
17 changes: 11 additions & 6 deletions Lib/test/test_embed.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1479,6 +1479,10 @@ def test_init_setpythonhome(self):
stdlib = os.path.join(home, sys.platlibdir, f'python{version}{ABI_THREAD}')
expected_paths = self.module_search_paths(prefix=home, exec_prefix=home)

# Create the expected paths to avoid the bad stdlib dir warning
for entry in expected_paths:
os.makedirs(entry, exist_ok=True)

config = {
'home': home,
'module_search_paths': expected_paths,
Expand All @@ -1492,8 +1496,7 @@ def test_init_setpythonhome(self):
self.default_program_name(config)
env = {'TESTHOME': home, 'PYTHONPATH': paths_str}
self.check_all_configs("test_init_setpythonhome", config,
api=API_COMPAT, env=env,
ignore_stderr=True) # ignore missing stdlib warning
api=API_COMPAT, env=env)

def test_init_is_python_build_with_home(self):
# Test _Py_path_config._is_python_build configuration (gh-91985)
Expand Down Expand Up @@ -1521,6 +1524,10 @@ def test_init_is_python_build_with_home(self):
stdlib = os.path.join(home, sys.platlibdir, f'python{version}{ABI_THREAD}')
expected_paths = self.module_search_paths(prefix=home, exec_prefix=home)

# Create the expected paths to avoid the bad stdlib dir warning
for entry in expected_paths:
os.makedirs(entry, exist_ok=True)

config = {
'home': home,
'module_search_paths': expected_paths,
Expand All @@ -1537,8 +1544,7 @@ def test_init_is_python_build_with_home(self):
env['NEGATIVE_ISPYTHONBUILD'] = '1'
config['_is_python_build'] = 0
self.check_all_configs("test_init_is_python_build", config,
api=API_COMPAT, env=env,
ignore_stderr=True) # ignore missing stdlib warning
api=API_COMPAT, env=env)

env['NEGATIVE_ISPYTHONBUILD'] = '0'
config['_is_python_build'] = 1
Expand All @@ -1554,8 +1560,7 @@ def test_init_is_python_build_with_home(self):
config.update(prefix=prefix, base_prefix=prefix,
exec_prefix=exec_prefix, base_exec_prefix=exec_prefix)
self.check_all_configs("test_init_is_python_build", config,
api=API_COMPAT, env=env,
ignore_stderr=True) # ignore missing stdlib warning
api=API_COMPAT, env=env)

def copy_paths_by_env(self, config):
all_configs = self._get_expected_config()
Expand Down
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