Bug 19545

Summary:	python2 flake8 does not run (DistributionNotFound)
Product:	Mageia	Reporter:	Rémi Verschelde <rverschelde>
Component:	Release (media or process)	Assignee:	Dimitrios Glentadakis <dglent>
Status:	RESOLVED FIXED	QA Contact:
Severity:	major
Priority:	Normal	CC:	cae, geiger.david68210, pkg-bugs, sysadmin-bugs
Version:	Cauldron	Keywords:	Junior_job
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:	python-flake8-2.5.4-2.mga6	CVE:
Status comment:
Attachments:	Enki settings - detection of flake8

Description Rémi Verschelde 2016-10-06 08:54:04 CEST

Installed `python-flake8` on current Cauldron:

(media Â«Â Core ReleaseÂ Â»)
  python-flake8                  2.5.4        2.mga6        noarch  
  python-pep8                    1.7.0        1.mga6        noarch  
  python-pyflakes                1.0.0        1.mga6        noarch 

When running:

$ flake8
Traceback (most recent call last):
  File "/bin/flake8", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3140, in <module>
    @_call_aside
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3126, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3153, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 640, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 941, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 828, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'flake8==2.5.4' distribution was not found and is required by the application

Comment 1 Rémi Verschelde 2016-10-06 08:54:58 CEST

The issue seems to be that /usr/bin/flake8 wants the python3 module instead of the python2 one.

Comment 2 Rémi Verschelde 2016-10-06 09:00:11 CEST

It would also be worth upgrading to 3.0.4. A solution to the above issue would be to rename the python2 /usr/bin/flake8 before installing the python3 flavour, or reciprocally. Or decide to package only the latter.

Rémi Verschelde 2016-10-06 09:00:32 CEST

Summary: flake8 does not run (DistributionNotFound) => python2 flake8 does not run (DistributionNotFound)

Rémi Verschelde 2016-10-06 09:01:20 CEST

Keywords: (none) => Junior_job
CC: (none) => pkg-bugs

Comment 3 Charles Edwards 2016-10-06 09:20:32 CEST

We build flake8 for both python3 and python2.7
 
If you have installed flake8 on a particular version of Python (or on several versions), it may be best to run python<version> -m flake8.

for 2.7 use
$ python2.7 -m flake8

for 3 use
$ python3 -m flake8

CC: (none) => cae

Comment 4 David GEIGER 2016-10-06 12:59:53 CEST

Should be fixed in next python-flake8 update renaming flake8 binary to python3-flake8 in the python3 subpackage.

CC: (none) => geiger.david68210

Comment 5 Dimitrios Glentadakis 2016-10-06 18:25:07 CEST

Created attachment 8503 [details]
Enki settings - detection of flake8

Comment 6 Dimitrios Glentadakis 2016-10-06 18:26:21 CEST

Thanks David, i have no Cauldron installation actually, could you please test that enki finds flake8 as in the screenshot?

Comment 7 David GEIGER 2016-10-06 19:26:53 CEST

Hmmm! did not think about it :)

So I have let the python3-flake8 package use the default name "flake8" in /usr/bin/ as it is the only one who needs really this binary and rename the python2 binary to "python2-flake8".

Comment 8 Rémi Verschelde 2016-10-06 19:48:20 CEST

Yay for python3 having the priority in $PATH :D

Comment 9 David GEIGER 2016-10-07 08:23:02 CEST

Fixed!

Status: NEW => RESOLVED
Resolution: (none) => FIXED