Missing version names of a package cause poetry to crash

[dvf]

• [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 version and name: macOS 10.14.2
• Poetry version: 0.12.11
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/dvf/6c749cbad7d362e716361a0ca17f8d4e

Issue

Poetry crashes when trying to install some-private-dep pinned at a parsable version (1.1.5).

There are missing versions of this private package, causing Poetry to be calling Version.parse with text = None

Here's the Traceback:

~/P/brxp ❯❯❯ poetry add some-private-dep==1.1.5 -vvv
Using virtualenv: /Users/dvf/Library/Caches/pypoetry/virtualenvs/someproject-py3.6

[TypeError]              
expected string or bytes-like object  

Exception trace:
 /Users/dvf/.poetry/lib/poetry/_vendor/py3.6/cleo/application.py in run() at line 94
   status_code = self.do_run(input_, output_)
 /Users/dvf/.poetry/lib/poetry/console/application.py in do_run() at line 88
   return super(Application, self).do_run(i, o)
 /Users/dvf/.poetry/lib/poetry/_vendor/py3.6/cleo/application.py in do_run() at line 197
   status_code = command.run(input_, output_)
 /Users/dvf/.poetry/lib/poetry/console/commands/command.py in run() at line 77
   return super(BaseCommand, self).run(i, o)
 /Users/dvf/.poetry/lib/poetry/_vendor/py3.6/cleo/commands/base_command.py in run() at line 146
   status_code = self.execute(input_, output_)
 /Users/dvf/.poetry/lib/poetry/_vendor/py3.6/cleo/commands/command.py in execute() at line 107
   return self.handle()
 /Users/dvf/.poetry/lib/poetry/console/commands/add.py in handle() at line 69
   packages, allow_prereleases=self.option("allow-prereleases")
 /Users/dvf/.poetry/lib/poetry/console/commands/init.py in _determine_requirements() at line 244
   allow_prereleases=allow_prereleases,
 /Users/dvf/.poetry/lib/poetry/console/commands/init.py in _find_best_version_for_package() at line 260
   name, required_version, allow_prereleases=allow_prereleases
 /Users/dvf/.poetry/lib/poetry/version/version_selector.py in find_best_candidate() at line 29
   package_name, constraint, allow_prereleases=allow_prereleases
 /Users/dvf/.poetry/lib/poetry/repositories/pool.py in find_packages() at line 65
   name, constraint, extras=extras, allow_prereleases=allow_prereleases
 /Users/dvf/.poetry/lib/poetry/repositories/legacy_repository.py in find_packages() at line 219
   for version in page.versions:
 /Users/dvf/.poetry/lib/poetry/repositories/legacy_repository.py in versions() at line 88
   version = self.link_version(link)
 /Users/dvf/.poetry/lib/poetry/repositories/legacy_repository.py in link_version() at line 134
   version = Version.parse(version)
 /Users/dvf/.poetry/lib/poetry/semver/version.py in parse() at line 199
   match = COMPLETE_VERSION.match(text)

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

I'll create a PR to fix.

[dvf]

Bump

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This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

Closing this issue automatically because it has not had any activity since it has been marked as stale. If you think it is still relevant and should be addressed, feel free to open a new one.

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