Editable install of local package fails without network connectivity

[jmbowman]

Environment

• pip version: 10.0.1
• Python version: 3.6.3
• OS: Mac OS X 10.11.6

Description

An editable installation of a local setuptools checkout fails when there is no network access under pip 10.0.0 and pip 10.0.1. It works under pip 9.0.3, so this seems to be a regression. Also reproduced on another developer's notebook at the PyCon sprints.

This is particularly problematic because it blocks offline execution of tests via tox when usedevelop=True (which is relatively common).

Expected behavior

$ pip install -e /Users/jeremybowman/Source/setuptools
Obtaining file:///Users/jeremybowman/Source/setuptools
Installing collected packages: setuptools
  Found existing installation: setuptools 39.1.0.post20180516
    Uninstalling setuptools-39.1.0.post20180516:
      Successfully uninstalled setuptools-39.1.0.post20180516
  Running setup.py develop for setuptools
Successfully installed setuptools

How to Reproduce

1. Clone the setuptools git repo: git clone git@github.com:pypa/setuptools.git
2. Change into the setuptools project directory: cd setuptools
3. Then run pip install -e .
4. The error shown below occurs.

Output

$ git clone git@github.com:pypa/setuptools.git
$ cd setuptools
$ pip install -e .
Obtaining file:///Users/jeremybowman/Source/setuptools
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x1040d4cc0>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',)': /simple/setuptools/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x10409ce80>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',)': /simple/setuptools/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x1040c1eb8>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',)': /simple/setuptools/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x1040c1fd0>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',)': /simple/setuptools/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x1040c1be0>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',)': /simple/setuptools/
  Could not find a version that satisfies the requirement setuptools (from versions: )
No matching distribution found for setuptools

[benoit-pierre]

This could be because setuptools now has a pyproject.toml, and this trigger PEP 518 support. Does it work with --no-build-isolation?

[jmbowman]

Yes, pip install --no-build-isolation -e . does seem to reliably work without network access under the same circumstances. And it looks like there's some pending PEP 518 related work in tox: tox-dev/tox#573

[benoit-pierre]

For reference: pypa/setuptools#1404

I think this issue can be closed.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.