Poetry can't add multiple dependencies with --extra

[maksbotan]

• 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 (-vvv option).

• OS version and name: macOS Mojave 10.14.4 (18E226)

• Poetry version: Poetry 0.12.12

• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/maksbotan/c98530347fff1b8e103259ccebd4fe76

Issue

I try to add multiple dependencies adding them to extras (package names only for example):

$ poetry add -vvv -E web -- bottle flask
Virtualenv foo-py3.7 already exists.
Using virtualenv: /Users/maksbotan/Library/Caches/pypoetry/virtualenvs/foo-py3.7
                                                                           
[ValueError]                                                
You can only specify one package when using the --git or --path options  
                                                                           
Exception trace:
 /Users/maksbotan/.poetry/lib/poetry/_vendor/py3.7/cleo/application.py in run() at line 94
   status_code = self.do_run(input_, output_)
 /Users/maksbotan/.poetry/lib/poetry/console/application.py in do_run() at line 88
   return super(Application, self).do_run(i, o)
 /Users/maksbotan/.poetry/lib/poetry/_vendor/py3.7/cleo/application.py in do_run() at line 197
   status_code = command.run(input_, output_)
 /Users/maksbotan/.poetry/lib/poetry/console/commands/command.py in run() at line 77
   return super(BaseCommand, self).run(i, o)
 /Users/maksbotan/.poetry/lib/poetry/_vendor/py3.7/cleo/commands/base_command.py in run() at line 146
   status_code = self.execute(input_, output_)
 /Users/maksbotan/.poetry/lib/poetry/_vendor/py3.7/cleo/commands/command.py in execute() at line 107
   return self.handle()
 /Users/maksbotan/.poetry/lib/poetry/console/commands/add.py in handle() at line 42
   "You can only specify one package "

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

If I call poetry add -E web for each individual package I get what I expect.

I think that at least error message should be more helpful, since I'm clearly not using --git or --path.

[ulope]

Duplicate of #429

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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]

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.

[github-actions]

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