[Bug 1628165] [NEW] venv: bin/activate.fish doesn't work

[roland]

Public bug reported:

Creating a virtual env with pyvenv and activating it using the fish shell will throw an error.
This is due to a '$' being added to the venv prompt.
This is behavior that is not in python 3.5: https://hg.python.org/cpython/file/3.5/Lib/venv/

/tmp> pyvenv venv
/tmp> source venv/bin/activate.fish 
The “$” character begins a variable name. The character “(”, which directly followed a “$”, is not allowed as a part of a variable name, and variable names may not be zero characters long. To learn more about variable expansion in fish, type “help expand-variable”.
venv/bin/activate.fish (line 58):         if test -n "$(venv) "
                                                     ^
from sourcing file venv/bin/activate.fish
	called on standard input

source: Error while reading file “venv/bin/activate.fish”


Ubuntu 16.04.1 LTS
pyvenvv-3.5

** Affects: python3.4 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1628165

Title:
  venv: bin/activate.fish doesn't work

Status in python3.4 package in Ubuntu:
  New

Bug description:
  Creating a virtual env with pyvenv and activating it using the fish shell will throw an error.
  This is due to a '$' being added to the venv prompt.
  This is behavior that is not in python 3.5: https://hg.python.org/cpython/file/3.5/Lib/venv/

  /tmp> pyvenv venv
  /tmp> source venv/bin/activate.fish 
  The “$” character begins a variable name. The character “(”, which directly followed a “$”, is not allowed as a part of a variable name, and variable names may not be zero characters long. To learn more about variable expansion in fish, type “help expand-variable”.
  venv/bin/activate.fish (line 58):         if test -n "$(venv) "
                                                       ^
  from sourcing file venv/bin/activate.fish
  	called on standard input

  source: Error while reading file “venv/bin/activate.fish”

  
  Ubuntu 16.04.1 LTS
  pyvenvv-3.5

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