can't add local packages with git dependencies

[brain4power]

• 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 Catalina 10.15.5.

• Poetry version: 1.0.9

• **my pyproject.toml file

Issue

I downloaded the lamb package to my computer. Trying:
poetry add ../lamb -vvv
getting an error:

[RuntimeError]
Unable to retrieve the package version for /var/folders/r1/65bwz63x3dd_zcr5vnrgm7m80000gn/T/pypoetry-git-dpath-pythonmqyoos_1

with praceback:

  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/Users/user/.poetry/lib/poetry/console/commands/add.py", line 149, in handle
    status = installer.run()
  File "/Users/user/.poetry/lib/poetry/installation/installer.py", line 74, in run
    self._do_install(local_repo)
  File "/Users/user/.poetry/lib/poetry/installation/installer.py", line 161, in _do_install
    ops = solver.solve(use_latest=self._whitelist)
  File "/Users/user/.poetry/lib/poetry/puzzle/solver.py", line 36, in solve
    packages, depths = self._solve(use_latest=use_latest)
  File "/Users/user/.poetry/lib/poetry/puzzle/solver.py", line 181, in _solve
    self._package, self._provider, locked=locked, use_latest=use_latest
  File "/Users/user/.poetry/lib/poetry/mixology/__init__.py", line 7, in resolve_version
    return solver.solve()
  File "/Users/user/.poetry/lib/poetry/mixology/version_solver.py", line 80, in solve
    next = self._choose_package_version()
  File "/Users/user/.poetry/lib/poetry/mixology/version_solver.py", line 388, in _choose_package_version
    version = self._provider.complete_package(version)
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 601, in complete_package
    self.search_for_vcs(r)
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 175, in search_for_vcs
    name=dependency.name,
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 213, in get_package_from_vcs
    package = cls.get_package_from_directory(tmp_dir, name=name)
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 374, in get_package_from_directory
    directory

trying to fix that and edit dpath dependence at setup.py:

install_requires=[
        ...
        'dpath @ git+https://git@github.com/MrJuicyBacon/dpath-python@2.0.1#egg=dpath',
       ...

]

trying again poetry add ../lamb -vvv
getting an error:

[CalledProcessError]
Command '['git', '--git-dir', '/var/folders/r1/65bwz63x3dd_zcr5vnrgm7m80000gn/T/pypoetry-git-dpath-pythonfffloo11/.git', '--work-tree', '/var/folders/r1/65bwz63x3dd_zcr5vnrgm7m80000gn/T/pypoetry-git-dpath-pythonfffloo11', 'checkout', '2.0.1']' returned non-zero exit status 1

with traceback

  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/Users/user/.poetry/lib/poetry/_vendor/py3.6/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/Users/user/.poetry/lib/poetry/console/commands/add.py", line 149, in handle
    status = installer.run()
  File "/Users/user/.poetry/lib/poetry/installation/installer.py", line 74, in run
    self._do_install(local_repo)
  File "/Users/user/.poetry/lib/poetry/installation/installer.py", line 161, in _do_install
    ops = solver.solve(use_latest=self._whitelist)
  File "/Users/user/.poetry/lib/poetry/puzzle/solver.py", line 36, in solve
    packages, depths = self._solve(use_latest=use_latest)
  File "/Users/user/.poetry/lib/poetry/puzzle/solver.py", line 181, in _solve
    self._package, self._provider, locked=locked, use_latest=use_latest
  File "/Users/user/.poetry/lib/poetry/mixology/__init__.py", line 7, in resolve_version
    return solver.solve()
  File "/Users/user/.poetry/lib/poetry/mixology/version_solver.py", line 80, in solve
    next = self._choose_package_version()
  File "/Users/user/.poetry/lib/poetry/mixology/version_solver.py", line 388, in _choose_package_version
    version = self._provider.complete_package(version)
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 601, in complete_package
    self.search_for_vcs(r)
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 175, in search_for_vcs
    name=dependency.name,
  File "/Users/user/.poetry/lib/poetry/puzzle/provider.py", line 207, in get_package_from_vcs
    git.checkout(reference, tmp_dir)
  File "/Users/user/.poetry/lib/poetry/vcs/git.py", line 217, in checkout
    return self.run(*args)
  File "/Users/user/.poetry/lib/poetry/vcs/git.py", line 284, in run
    subprocess.check_output(['git'] + list(args), stderr=subprocess.STDOUT)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 356, in check_output
    **kwargs).stdout
  File "/Users/user/.poetry/lib/poetry/utils/_compat.py", line 206, in run
    retcode, process.args, output=stdout, stderr=stderr

what do I need to do to fix the problem?

[finswimmer]

Hello @brain4power,

the version is set dynamically in the setup.py of dpath. poetry isn't able to read this mandatory information by design, as it doesn't execute the setup.py.

We are discussion ways how to support this in the future, see #2632

fin swimmer

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