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|
Description: Disable ensurepip for the system installation
We have a python3-pip package, for users who want pip.
We just need ensurepip to seed pip in virtual environments.
Forwarded: not-needed
--- a/Lib/ensurepip/__init__.py
+++ b/Lib/ensurepip/__init__.py
@@ -8,6 +8,34 @@
from pathlib import Path
from shutil import copy2
+def _ensurepip_is_disabled_in_debian_for_system():
+ # Detect if ensurepip is being executed inside of a python-virtualenv
+ # environment and return early if so.
+ if hasattr(sys, 'real_prefix'):
+ return
+
+ # Detect if ensurepip is being executed inside of a stdlib venv
+ # environment and return early if so.
+ if sys.prefix != getattr(sys, "base_prefix", sys.prefix):
+ return
+
+ # If we've gotten here, then we are running inside of the system Python
+ # and we don't want to use ensurepip to install into the system Python
+ # so instead we'll redirect the user to using dpkg and apt-get.
+ print('''\
+ensurepip is disabled in Debian/Ubuntu for the system python.
+
+Python modules for the system python are usually handled by dpkg and apt-get.
+
+ apt install python3-<module name>
+
+Install the python3-pip package to use pip itself. Using pip together
+with the system python might have unexpected results for any system installed
+module, so use it on your own risk, or make sure to only use it in virtual
+environments.
+''')
+ sys.exit(1)
+
__all__ = ["version", "bootstrap"]
_PIP_VERSION = "25.2"
@@ -130,6 +158,11 @@
Note that calling this function will alter both sys.path and os.environ.
"""
+
+ # Ensure that we are only running this inside of a virtual environment
+ # of some kind.
+ _ensurepip_is_disabled_in_debian_for_system()
+
if altinstall and default_pip:
raise ValueError("Cannot use altinstall and default_pip together")
--- a/Lib/venv/__init__.py
+++ b/Lib/venv/__init__.py
@@ -443,8 +443,26 @@
def _setup_pip(self, context):
"""Installs or upgrades pip in a virtual environment"""
- self._call_new_python(context, '-m', 'ensurepip', '--upgrade',
- '--default-pip', stderr=subprocess.STDOUT)
+ try:
+ self._call_new_python(context, '-m', 'ensurepip', '--upgrade',
+ '--default-pip', stderr=subprocess.STDOUT)
+ except subprocess.CalledProcessError as err:
+ stdlib = sysconfig.get_path('stdlib')
+ if not os.path.exists(f'{stdlib}/ensurepip/__main__.py'):
+ print("""\
+The virtual environment was not created successfully because ensurepip is not
+available. On Debian/Ubuntu systems, you need to install the python3-venv
+package using the following command.
+
+ apt install python{}-venv
+
+You may need to use sudo with that command. After installing the python3-venv
+package, recreate your virtual environment.
+
+Failing command: {}
+""".format(sysconfig.get_python_version(), context.env_exec_cmd))
+ sys.exit(1)
+ raise
def setup_scripts(self, context):
"""
|
