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python-typed-ast was updated to 1.1.0, so a new release should be made #3802
Description
And if typed-ast is following semver, this should not break the API
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 658, in _build_master
ws.require(__requires__)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 972, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 863, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (typed-ast 1.1.0 (/usr/lib/python3.6/site-packages), Requirement.parse('typed-ast<1.1.0,>=1.0.4'), {'mypy'})
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/mypy", line 6, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3049, in <module>
@_call_aside
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3033, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3062, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 660, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 673, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 858, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'typed-ast<1.1.0,>=1.0.4' distribution was not found and is required by mypy
mypy seems to run fine with newest typed-ast. (modified requires.txt in the egg-info)
Activity
emmatyping commentedon Aug 5, 2017
While your issue is quite terse, I believe I understand the issue is that you have an existing typed_ast 1.1.0 which conflicts with mypy 0.520/0.521 installation (which, as one can see above, specifies less than 1.1.0).
To be clear: typed_ast should be completely api backwards compatible with 1.0.x The only added feature is Windows support for Python 3.3/3.4 (a large enough feature to bump a minor version).
Mypy 0.521 was the only version of mypy released since the typed_ast update. Since the mypy release was a bugfix release I did not see it proper to update a dependency (which seems to go against the spirit of sem ver), and no one else suggested it.
Let me know if you have further questions about this.
marmistrz commentedon Aug 5, 2017
I perfectly understand the cause of the error. It originates from the fact that the Arch Linux package maintainer has updated the package and your package seems to force
<1.1.0. :)https://aur.archlinux.org/packages/python-typed-ast/
I really have no questions here:
it's just the dependency that has to be bumped inIt's just a new release that has to be made, because the dependency has already been bumped in #3733requires.txt.[-]python-typed-ast was updated to 1.1.0[/-][+]python-typed-ast was updated to 1.1.0, so a new release should be made[/+]gvanrossum commentedon Aug 5, 2017
A new release will be made in due time (probably in ~6-8 weeks). This is not the place to vent about Arch Linux.