pyenv-virtualenv breaks fish shell when using pyenv global

[iodbh]

I've been successfully using pyenv-virtualenv with fish, but using pyenv global breaks my shell: every new shell opens on an error traceback starting with:

 pyenv-virtualenv: activate newdefault
    fish: Could not locate end of block. The 'end' command is missing, misspelled or a ';' is missing.
    /private/tmp/.psub.kRftWGHW9n (line 6): function _old_fish_prompt
                                    ^
in . (source) call of file '/private/tmp/.psub.d9D37vvhaa',
    called on line 14 of file '/private/tmp/.psub.kRftWGHW9n',

in . (source) call of file '/Users/zeitgeist/.pyenv/versions/newdefault/bin/activate.fish',
    called on line 14 of file '/private/tmp/.psub.kRftWGHW9n',

in . (source) call of file '-',
    called on line 39 of file '/private/tmp/.psub.kRftWGHW9n',

in function 'pyenv',
     called on line 19 of file '/private/tmp/.psub.HG02t3zPHZ',
    with parameter list 'activate --no-error --verbose'

in function '_pyenv_virtualenv_hook',
    called on standard input,

 in event handler: handler for generic event 'fish_prompt'

       function − function ‐ create a function

and ending with:

source: Error while reading file '/private/tmp/.psub.d9D37vvhaa'
fish: Unknown command '_old_fish_prompt'
/Users/username/.pyenv/versions/newdefault/bin/activate.fish (line 57): _old_fish_prompt
                                                                     ^
in command substitution
    called on line 59 of file '/Users/username/.pyenv/versions/newdefault/bin/activate.fish',

in function 'fish_prompt',
    called on standard input,

in command substitution
    called on standard input,

• Before using pyenv global, I had the same problem with shells inside Pycharm (no issue whith "regular" shells then).
• Using bash then fish in the broken shell creates a new fish shell without any error

[yyuu]

I couldn't reproduce the behaviour. Please let me know the following

• The output from pyenv versions
• The output from pyenv virtualenvs
• The output from pyenv global

[iodbh]

Here it is:

• pyenv versions

  system
  2.7.9
  3.4.2
* 3.4.3 (set by /Users/username/.pyenv/version)
  booklook
  charon
  cptsms
  dokuwikiparser
  lpmawagtail
  newdefault
  newdefaultbrew
  pediscript
  ugstream
  wikimport

• pyenv virtualenvs

  booklook (created from /Users/username/.pyenv/versions/3.4.3)
  charon (created from /Users/username/.pyenv/versions/2.7.9)
  cptsms (created from /Users/username/.pyenv/versions/3.4.3)
  dokuwikiparser (created from /Users/username/.pyenv/versions/3.4.3)
  lpmawagtail (created from /Users/username/.pyenv/versions/3.4.3)
* newdefault (created from /Users/username/.pyenv/versions/3.4.3)
  newdefaultbrew (created from /Users/username/.pyenv/versions/3.4.3)
  pediscript (created from /Users/username/.pyenv/versions/3.4.2)
  ugstream (created from /Users/username/.pyenv/versions/3.4.2)
  wikimport (created from /Users/username/.pyenv/versions/3.4.3)

• pyenv global

newdefault

This issue only arises with virtualenvs : if I set a "regular" version (e.g. 3.4.3) as the global, everything works smoothly.

I have the same problem with 2 different computers (both macs running Yosemite).

[yyuu]

Is this still a problem for you? I've not yet reproduced the problem. From the error output, the activate.fish script created by virtualenv might be corrupted. But I don't know why....

1. What is virtualenv did you use to create virtualenv? virtualenv or pyvenv?
   • pyenv virtualenv --version shows your configuration
2. Does the problem persist even after once you recreate new virtualenv?

[yyuu]

I'll close this issue for now as stale issue. Feel free to reopen the issue if this is still a problem for you.

[iodbh]

I just saw your previous comment, as I was off the grid for a while. The issue persisted for a while, but disappeared after several environment updates so it's hard to pinpoint the cause. Thank you for your support !