Cannot add grpcio #328
Description
- I am on the latest Poetry version.
- I have searched the issues of this repo and believe that this is not a duplicate.
- If an exception occurs when executing a command, I executed it again in debug mode (
-vvvoption).
- OS version and name: Ubuntu 18.04
- Poetry version: 0.11.2
- Python version: 3.6.5
Issue
When trying to add grpcio using poetry add grpcio I expect it it install grpcio. Instead I get a resolver error:
Using version ^1.13 for grpcio
Updating dependencies
Resolving dependencies... (0.2s)
[SolverProblemError]
The current supported Python versions are 3.6.5
Because no versions of grpcio match >1.13,<2.0
and grpcio (1.13.0) depends on futures (>=2.2.0), grpcio (>=1.13,<2.0) requires futures (>=2.2.0).
Because futures (3.2.0) requires Python >=2.6, <3
and no versions of futures match >=2.2.0,<3.2.0 || >3.2.0, futures is forbidden.
Thus, grpcio is forbidden.
So, because whodat depends on grpcio (^1.13), version solving failed.
add [-D|--dev] [--git GIT] [--path PATH] [-E|--extras EXTRAS] [--optional] [--python PYTHON] [--platform PLATFORM] [--allow-prereleases] [--dry-run] [--] <name> (<name>)...
Looking at the setup.py for grpcio the only reference to the failed dependency futures is inside a if not PY3 block (https://github.com/grpc/grpc/blob/v1.13.0/setup.py#L281), so should not actually form part of the requirements as far as I can see.
I'm not sure why the resolving is still seeing the futures dependency.