Installing with poetry a package build with poetry fails

• 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: Ubuntu 19.04
• Poetry version: 1.0.0b1
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/antoine-gallix/9e4c59a9621f105210f3919adc19e716

Issue

Using poetry, I try to create a new empty project, build it, then use it in another project also with poetry. That fails. Following a set of commands that reproduces the problem:

# create a new package with poetry and build it
poetry new package
cd package
poetry build
cd ..

# use that new package in a new project
poetry new project
cd project
poetry add ../package
poetry install -vvv

This results in the following error message:

❯ poetry install -vvv
Using virtualenv: /home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7
Installing dependencies from lock file


Package operations: 1 install, 0 updates, 0 removals, 10 skipped

  - Skipping more-itertools (7.2.0) Already installed
  - Skipping zipp (0.6.0) Already installed
  - Skipping importlib-metadata (0.20) Already installed
  - Skipping atomicwrites (1.3.0) Already installed
  - Skipping attrs (19.1.0) Already installed
  - Skipping colorama (0.4.1) Not needed for the current environment
  - Skipping pluggy (0.12.0) Already installed
  - Skipping py (1.8.0) Already installed
  - Skipping six (1.12.0) Already installed
  - Installing package (0.1.0 ../package)

[EnvCommandError]
Command ['/home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/bin/python', '-m', 'pip', 'install', '--no-deps', '-U', '-e', '/home/antoine/tmp/package'] errored with the following return code 1, and output: 
Obtaining file:///home/antoine/tmp/package
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
    Preparing wheel metadata: started
    Preparing wheel metadata: finished with status 'error'
    Complete output from command /home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/bin/python /home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpf4alzprh:
    Traceback (most recent call last):
      File "/home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 207, in <module>
        main()
      File "/home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 197, in main
        json_out['return_val'] = hook(**hook_input['kwargs'])
      File "/home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 69, in prepare_metadata_for_build_wheel
        return hook(metadata_directory, config_settings)
      File "/tmp/pip-build-env-50kj76t8/overlay/lib/python3.7/site-packages/poetry/masonry/api.py", line 39, in prepare_metadata_for_build_wheel
        dist_info.mkdir()
      File "/home/antoine/.pyenv/versions/3.7.4/lib/python3.7/pathlib.py", line 1258, in mkdir
        self._accessor.mkdir(self, mode)
    FileExistsError: [Errno 17] File exists: '/home/antoine/tmp/package/pip-wheel-metadata/package-0.1.0.dist-info'
    
    ----------------------------------------
Command "/home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/bin/python /home/antoine/.cache/pypoetry/virtualenvs/project-nwMIyaCB-py3.7/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpf4alzprh" failed with error code 1 in /home/antoine/tmp/package
You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.


Traceback (most recent call last):
  File "/home/antoine/.poetry/lib/poetry/_vendor/py3.7/clikit/console_application.py", line 132, in run
    status_code = command.handle(parsed_args, io)
  File "/home/antoine/.poetry/lib/poetry/_vendor/py3.7/clikit/api/command/command.py", line 119, in handle
    status_code = self._do_handle(args, io)
  File "/home/antoine/.poetry/lib/poetry/_vendor/py3.7/clikit/api/command/command.py", line 167, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/home/antoine/.poetry/lib/poetry/_vendor/py3.7/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/home/antoine/.poetry/lib/poetry/console/commands/install.py", line 63, in handle
    return_code = installer.run()
  File "/home/antoine/.poetry/lib/poetry/installation/installer.py", line 74, in run
    self._do_install(local_repo)
  File "/home/antoine/.poetry/lib/poetry/installation/installer.py", line 286, in _do_install
    self._execute(op)
  File "/home/antoine/.poetry/lib/poetry/installation/installer.py", line 302, in _execute
    getattr(self, '_execute_{}'.format(method))(operation)
  File "/home/antoine/.poetry/lib/poetry/installation/installer.py", line 327, in _execute_install
    self._installer.install(operation.package)
  File "/home/antoine/.poetry/lib/poetry/installation/pip_installer.py", line 32, in install
    self.install_directory(package)
  File "/home/antoine/.poetry/lib/poetry/installation/pip_installer.py", line 201, in install_directory
    return self.run(*args)
  File "/home/antoine/.poetry/lib/poetry/installation/pip_installer.py", line 109, in run
    return self._env.run('python', '-m', 'pip', *args, **kwargs)
  File "/home/antoine/.poetry/lib/poetry/utils/env.py", line 875, in run
    return super(VirtualEnv, self).run(bin, *args, **kwargs)
  File "/home/antoine/.poetry/lib/poetry/utils/env.py", line 708, in run
    raise EnvCommandError(e, input=input_)

[wylee]

I’m running into a similar problem with both 0.12.7 and 1.0.0b1. I have otherproject = { path = "../otherproject" } in my pyproject.toml and both poetry install and poetry update fail after the first run because ../otherproject/pip-wheel-metadata/otherproject-0.0.0.dist-info already exists.

The problem seems to be here: https://github.com/sdispater/poetry/blob/master/poetry/masonry/api.py#L39. mkdir doesn’t check first to see if dist-info directory already exists. A simple fix might be to add exist_ok=True to the mkdir call, but I’m not sure if this directory is supposed to be cleaned up elsewhere after poetry install or poetry update is run.

[antoine-gallix]

Hey Stalebot go reboot yourself!