diff options
Diffstat (limited to 'Lib/packaging/install.py')
| -rw-r--r-- | Lib/packaging/install.py | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/Lib/packaging/install.py b/Lib/packaging/install.py index 231764579a..c5bda45307 100644 --- a/Lib/packaging/install.py +++ b/Lib/packaging/install.py @@ -13,7 +13,7 @@ import errno import shutil import logging import tempfile -from sysconfig import get_config_var, get_path +from sysconfig import get_config_var, get_path, is_python_build from packaging import logger from packaging.dist import Distribution @@ -488,20 +488,31 @@ def install(project): Returns True on success, False on failure """ + if is_python_build(): + # Python would try to install into the site-packages directory under + # $PREFIX, but when running from an uninstalled code checkout we don't + # want to create directories under the installation root + message = ('installing third-party projects from an uninstalled ' + 'Python is not supported') + logger.error(message) + return False + logger.info('Checking the installation location...') purelib_path = get_path('purelib') + # trying to write a file there try: with tempfile.NamedTemporaryFile(suffix=project, dir=purelib_path) as testfile: testfile.write(b'test') except OSError: - # was unable to write a file + # FIXME this should check the errno, or be removed altogether (race + # condition: the directory permissions could be changed between here + # and the actual install) logger.info('Unable to write in "%s". Do you have the permissions ?' % purelib_path) return False - logger.info('Getting information about %r...', project) try: info = get_infos(project) |