pip install yotta fails with pip v10 (due to project_generator dependency)

[microbit-carlos]

Please feel free to close this issue, as the problem is not directly caused by yotta itself, but since it will affect users trying to install yotta I though it would be useful to have some info and visibility here.

pip install with pip v10 (released on the 14th of April) will fail when trying to install dependency project_generator:

Collecting project_generator<0.9.0,>=0.8.0 (from valinor<1.0,>=0.0.0->yotta)
  Downloading https://files.pythonhosted.org/packages/b4/bb/91ad20d17485d01829453767323dd2d13b325a0c7154bf5f8f375cbaac1e/project_generator-0.8.16.zip (86kB)
    100% |████████████████████████████████| 92kB 7.1MB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/l1/szsxrhfj7v1fglxfv9b35lz80000gn/T/pip-install-wJUzJQ/project-generator/setup.py", line 18, in <module>
        from pip.req import parse_requirements
    ImportError: No module named req

This has already been reported in the project_generator issue tracker, with more info over there: https://github.com/project-generator/project_generator/issues/440

[0xc0170]

As progen was updated (thanks @microbit-carlos for the fix).

Valinor should probably be updated to use the latest version (there's now 'project_generator>=0.8.0,<0.9.0',) and the fix is in 0.9.11

I can even propagate the fix to 0.8.x ?

[0xc0170]

I believe this can be closed?

[carlosperate]

If the dependencies have been fixed and their version updated in the respective master branches, then it hasn't been published to PyPI yet. On a new environment with pip 10.0.1, trying to pip install yotta:

...
Collecting project_generator<0.9.0,>=0.8.0 (from valinor<1.0,>=0.0.0->yotta)
  Cache entry deserialization failed, entry ignored
  Downloading https://files.pythonhosted.org/packages/b4/bb/91ad20d17485d01829453767323dd2d13b325a0c7154bf5f8f375cbaac1e/project_generator-0.8.16.zip (86kB)
    100% |████████████████████████████████| 92kB 3.1MB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/l1/szsxrhfj7v1fglxfv9b35lz80000gn/T/pip-install-d82c8koo/project-generator/setup.py", line 18, in <module>
        from pip.req import parse_requirements
    ModuleNotFoundError: No module named 'pip.req'

Probably better to keep it open until pip install works.

[ccrov]

when i use "pip install yotta " : what i should do ? Complete output from command python setup.py egg_info: Traceback (most recent call last): File "", line 1, in File "/private/var/folders/rc/78dl9vfd3fd0ppwjl0zjlph00000gn/T/pip-install-gq_hc0/project-generator/setup.py", line 18, in from pip.req import parse_requirements ImportError: No module named req

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/rc/78dl9vfd3fd0ppwjl0zjlph00000gn/T/pip-install-gq_hc0/project-generator/ allans-MacBook-Air:pxt allan$

[microbit-carlos]

The easiest way to get around it at the moment is to install an older version of pip, the latest v9 should work.

[0xc0170]

I published 0.8.17 that addresses this issue (cherry picked fix from 0.9.x). That should resolve this

Please close

[microbit-carlos]

Just tried it and pip install yotta now works again, thanks @0xc0170!

[thegecko]

Thanks!