Error adding a git dependency : parsing the package version?

• [ x ] I am on the latest Poetry version.

• [ x ] I have searched the issues of this repo and believe that this is not a duplicate.

• [ x ] If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS : Linux Mint 20.2

• Poetry version : 1.2.0a2

• pyenv version: 2.2.0

Issue

Adding a git dependency terminates in an error after either poetry add git+ssh://[e-mail]/path/repo.git or manually modifying pyproject.toml and running poetry update, see the error message below. I’ve tried everything possible, like tweaking the version of the git package or trying different python or poetry versions. Have anyone encountered something like this?

   4  ~/.local/lib/python3.8/site-packages/poetry/installation/pip_installer.py:266 in install_git
       264│         pkg.develop = package.develop
       265│ 
     → 266│         self.install_directory(pkg)
       267│ 

   3  ~/.local/lib/python3.8/site-packages/poetry/installation/pip_installer.py:204 in install_directory
       202│             # so we need to check the version of pip to know
       203│             # if we can rely on the build system
     → 204│             legacy_pip = self._env.pip_version < self._env.pip_version.__class__(
       205│                 19, 0, 0
       206│             )

   2  <string>:10 in __init__

   1  ~/.local/lib/python3.8/site-packages/poetry/core/version/pep440/version.py:44 in __post_init__
        42│         # we do this here to handle both None and tomlkit string values
        43│         object.__setattr__(
     →  44│             self, "text", self.to_string() if not self.text else str(self.text)
        45│         )
        46│ 

  AttributeError

  'int' object has no attribute 'to_string'

  at ~/.local/lib/python3.8/site-packages/poetry/core/version/pep440/version.py:113 in to_string
      109│         version_string = dash.join(
      110│             filter(
      111│                 bool,
      112│                 [
    → 113│                     self.release.to_string(),
      114│                     self.pre.to_string(short) if self.pre else self.pre,
      115│                     self.post.to_string(short) if self.post else self.post,
      116│                     self.dev.to_string(short) if self.dev else self.dev,
      117│                 ],

[alexander-belikov]

To be able to work I currently

1. clone the remote github repo
2. create setup.py
3. use good old python setup.py develop

That defeats the purpose of using poetry…

[coderanger]

Can confirm the combo of mypackage = { path = "../mypackage/", develop = true } where mypackage is using Poetry too and the new-installer is disabled results in a 100% crash.