• 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 10.15.7
• Poetry version: 1.1.4
• Python version: 3.9.0
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/pawelrubin/c20a783832924952dc0c0b9fa88974f0
• Link of a Gist with the contents of your poetry.lock file:
  https://gist.github.com/pawelrubin/19731324b4ed3b1f3d50c6634befc016
• Link of a Gist with the contents of your example_pkg/setup.py file:
  https://gist.github.com/pawelrubin/563bba1d591959c674c8aca81d3918ad

Issue

Local editable packages are not exported correctly by poetry. Thus, pip install -r requirements.txt fails with error:

ERROR: Invalid requirement: 'example-pkg @ /Users/pawelvewd/projects/test_poetry/example_pkg' (from line 3 of requirements.txt)
Hint: It looks like a path. File 'example-pkg @ /Users/pawelvewd/projects/test_poetry/example_pkg' does not exist.

Expected result

-e ./example_pkg["foo"] ; python_version >= "3.9"

Current result

example-pkg @ /Users/pawelvewd/projects/test_poetry/example_pkg; python_version >= "3.9"

• the path should be relative IMO
• Poetry does not export extras
• Poetry does not export develop = true (editable mode)