poetry install fails when a git repository with an ssh URL

• 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 18.04
• Poetry version: 0.12.17
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/thedrow/171e9e178499677f5838530e545c04fe

Issue

I’m getting the following error when executing poetry install:

[EnvCommandError]                                                                                                                                                                            
Command ['/home/omer/.cache/pypoetry/virtualenvs/bootsteps-py3.7/bin/python', '-m', 'pip', 'install', '-e', '/home/omer/Documents/Projects/bootsteps'] errored with the following return code 1, and out        
put:                                                                                                                                                                                                      
Obtaining file:///home/omer/Documents/Projects/bootsteps                                                                                                                                                  
    ERROR: Command errored out with exit status 1:                                                                                                                                                        
     command: /home/omer/.cache/pypoetry/virtualenvs/bootsteps-py3.7/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/home/omer/Documents/Projects/bootsteps/setup.py'"'"'; __file__                 
='"'"'/home/omer/Documents/Projects/bootsteps/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file_  
_, '"'"'exec'"'"'))' egg_info                                                                                                                                                                             
         cwd: /home/omer/Documents/Projects/bootsteps/                                                                                                                                                    
    Complete output (1 lines):                                                                                                                                                                            
    error in bootsteps setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers; Invalid URL given                                   
    ----------------------------------------                                                                                                                                                              
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.     

There are no further details.

[smheidrich]

@sdispater I have the same issue. It’s only reproducible if you actually have a Python package folder (project_name/__init__.py) to go along with the pyproject.toml, otherwise the installation won’t complain. I put a boiled-down version of @thedrow’s pyproject.toml here. The only relevant line is

returns = { git = "[e-mail]:dry-python/returns.git", branch = "master" }

Is that really the correct way to specify git dependencies accessible only via SSH, not HTTPS? Didn’t find anything on that in the docs, and putting something starting with e.g. ssh:// makes the subsequent git clone performed by poetry fail (cf. below). Would be good to have for dependencies between private repos, though.

Looking at the setup.py generated by poetry build, the issue seems to be that this is what poetry put for install_requires:

install_requires = \
['returns @ [e-mail]:dry-python/returns.git@master']

So clearly it expected something starting with https:// in which case the git+ prefix would’ve made sense. So for this line to be correct, you would need to put ssh:// in front of the line in pyproject.toml, but, as I said above, then poetry’s own git clone fails with:

[CalledProcessError]
Command '['git', 'clone', u'ssh://[e-mail]:dry-python/returns.git', '/tmp/pypoetry-git-returnsHlmB70']' returned non-zero exit status 128

IMHO it would be best if poetry understood ssh:// URLs and stripped the ssh:// before doing its own cloning.

[finswimmer]

Hello @smheidrich,

the dependency is described correct. But you have to make sure you have the necessary ssh-key(s) on your pc. This is what I get when trying to clone the repository:

$ git clone [e-mail]:dry-python/returns.git
Cloning into 'returns'...
ssh_exchange_identification: read: Connection reset by peer
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

And that’s the reason why a poetry install fails as well.

fin swimmer