--use-feature=in-tree-build not working

[ccampbell9]

Description

When trying to install a locally created package leveraging setuptools in a setup.py file, pip errors out with the following:

pip install .
Processing <path/to/directory>
  DEPRECATION: A future pip version will change local packages to be built in-place without first copying to a temporary directory. We recommend you use --use-feature=in-tree-build to test your packages with this new behavior before it becomes the default.
   pip 21.3 will remove support for this functionality. You can find discussion regarding this at https://github.com/pypa/pip/issues/7555.
ERROR: No .egg-info directory found in /tmp/pip-pip-egg-info-fdrfckqj

When the suggestion is followed, the same error occurs:

pip install --use-feature=in-tree-build .
Processing <path/to/file>
ERROR: No .egg-info directory found in /tmp/pip-pip-egg-info-i6ngpawd

Expected behavior

When the --use-feature=in-tree-build flag is used, my understanding is pip should be able to build the package in place and not have to first reference /tmp.

pip version

21.2.4

Python version

3.9

OS

Debain 11 and Ubuntu 20.04

How to Reproduce

1. Create any local python package and associated setup.py that uses setuptools
2. Attempt to install

Reproduced on 2 machines so far

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[sbidoul]

Hi,

The fact that the same error appears in both cases suggests that the issue is not related to in tree builds. I suspect there is something wrong in your setup.py or environment, but it is hard to tell without more details.

[pradyunsg]

Create any local python package and associated setup.py that uses setuptools
Attempt to install

These steps aren't sufficient to reproduce this issue. Please provide more details, or this issue shall be autoclosed due to lack of information.

[ccampbell9]

@sbidoul it was an issue with my environment. Apologies, I didn't think to look there.