Better support for anaconda virtualenvs

[cpaulik]

See the discussion in pyenv/pyenv#467 for reference

[yyuu]

Opened some of PRs to improve interoperability to Anaconda/Miniconda. As a side effect, I believe this would also sophisticate the handling of virtual environments created by virtualenv/pyvenv.

• Rewrite activate without using virtualenv/venv/conda's script #104
• Support uninstall and rehash of virtual environments created in envs #106
• Create virtualenv inside envs directory as similar as Anaconda #107
• List Anaconda-style virtual environments as a version in pyenv pyenv#471

[thomasjo]

@yyuu Please let me know if there's anything specific I can help out with regards to testing these changes 🙇

[cpaulik]

@yyuu Thanks, This looks like a very good set of changes.

[yyuu]

I'd like to ask you guys to test with your environments including 3rd party tools for interoperability. I'll update this once I wrote missing tests and merge them into master branch....

[yyuu]

I've finished merging all of them. Please give it a try, and let me know if there is a problem.

[cpaulik]

I've tested all the things that gave me problems before and they work like a charm now. Thanks a lot ❤️

[cpaulik]

I've found one problem that might bite some users.

running source activate testenv does not work as it would in anaconda but closes the console

Would it be possible to make the activate shim behave like the activate script of anaconda?

Normally I would of course use pyenv activate but I ran into this because of a script that uses source activate to activate an environment. Which means that setup scripts which work everywhere break if a user has pyenv installed.

[yyuu]

Umm. It's difficult to hook the invocation of source activate in pyenv.... I'm trying to look for some workaround for it, but none of working code is ready for now.

This would be a issue living with Anaconda/Miniconda, but it must not be a new issue introduced by the PRs.

[yyuu]

Fortunately there is pyenv-virtualenv-init. Manipulating PATH in it might be working for the issue. I don't like to do such thing in pyenv, but I haven't yet found any other solutions. Basically I really hate installing source scripts in PATH 😞

[yyuu]

Opened a PR for source activate issue.

#108

[cpaulik]

@yyuu Thanks for considering it. I can understand your aversion to installing source scripts in PATH. I tested the PR and it works as expected. Also activating an environment using source and deactivating it with pyenv deactivate works as expected.

[yyuu]

Is there still something need to be done?

[cpaulik]

After a day of testing this works very well now. Thank you.