issue adding nornir as a dependency with poetry since 2.1.0 release

Can’t add nornir 2.1.0 as a dependency for a project when using poetry.

$ mkdir zzz && cd zzz
$ pyenv local 3.7.2
$ pyenv version
3.7.2 (set by /tmp/zzz/.python-version)
$ poetry init
...snip...
$ cat pyproject.toml
[tool.poetry]
name = "zzz"
version = "0.1.0"
description = ""
authors = ["[e-mail]>"]

[tool.poetry.dependencies]
python = "^3.7"

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"
$ poetry add nornir
Creating virtualenv zzz-py3.7 in /Users/enzzzy/Library/Caches/pypoetry/virtualenvs
Using version ^2.1 for nornir

Updating dependencies
Resolving dependencies... (0.0s)

[SolverProblemError]
The current project must support the following Python versions: ^3.7
Because no versions of nornir match >2.1,<3.0
 and nornir (2.1.0) requires Python >=3.6,<3.8, nornir is forbidden.
So, because zzz depends on nornir (^2.1), version solving failed.

add [-D|--dev] [--git GIT] [--path PATH] [-E|--extras EXTRAS] [--optional] [--python PYTHON] [--platform PLATFORM] [--allow-prereleases] [--dry-run] [--] <name> (<name>)...

Not sure where the issue exactly is, I’m not familiar enough with poetry to troubleshoot this. I would expect the python version requirement is met since 3.7.2 > 3.6 && 3.7.2 < 3.8.

[dbarrosop]

For reference; https://github.com/sdispater/poetry/issues/743

[wvandeun]

Yes; it works with 2.1.1 on pypi. Thx for the quick reaction & fix!