Allow existing virtualenv directories to work with virtualfish

[adambrenecki]

Allow existing virtualenv directories to work with virtualfish

[daisylb]

Set VIRTUALFISH_HOME. Make sure it's set before virtual.fish is sourced. If it still doesn't work, feel free to reopen this issue.

[hahla]

Yes I did set this variable, and I verified the values are being set before virtual.fish is sourced. I tried both:
set -gx VIRTUALFISH_HOME "venv"

• and -
  set -gx VIRTUALFISH_HOME "./venv"

Expected result:

• cd to a directory that contains "venv" and auto_activate deactivates previous venv (if active), and activates cwd venv (if applicable).

Result:
-It requires manual vf activate . (so it's not doing it automatically)
-after i manually activate within a project, and I cd to another project with the same venv layout, it does not deactivate/activate automatically.

Maybe these are unrelated things to track, or configuration issues, I'm open to feedback.

[daisylb]

VIRTUALFISH_HOME (default: ~/virtualenvs) is the directory that contains all your virtualenvs, and should be an absolute path. If you want to change the name of the file that specifies the name of the virtualenv to activate, change VIRTUALFISH_ACTIVATION_FILE (default: .venv).

[hahla]

Great thanks, didn't see that in the docs on that feature, that works better for me. I don't consolidate venvs by the way.