poetry.lock lacks section [package.source] for sub-dependencies

[weatherfrog]

• 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

Issue

Consider the following scenario:

• pyproject.toml has package1 as a git dependency
• package1 has the git URL of package2 as a dependency in setup.py

Then, after poetry install, the file poetry.lock will lack a [package.source]section for package2 and, hence, consecutive builds will fail.

How to reproduce the issue

Create the following files:

🏄 tree
.
├── package1
│   └── setup.py
├── package2
│   └── setup.py
└── project
    └── pyproject.toml


🏄 cat project/pyproject.toml 
[tool.poetry]
name = "MyProject"
version = "0.0.0"
description = ""
authors=[]

[tool.poetry.dependencies]
python = "^3.6"
package1 = {git = "../package1"}


🏄 cat package1/setup.py 
from setuptools import setup

setup(
    name='package1',
    version="1.0.0",
    install_requires=[
        "package2@git+file://../package2",
    ],
)


🏄 cat package2/setup.py 
from setuptools import setup

setup(
    name='package2',
    version="1.0.0",
)

Then run

cd package1
git init && git add -A && git commit -m "init"
cd ..

cd package2
git init && git add -A && git commit -m "init"
cd ..

cd project
python3 -m virtualenv -p python3 venv
source venv/bin/activate
pip install pip --upgrade
pip install poetry==0.12.17
poetry install

In the resulting poetry.lock, the second [[package]]
section (for package2) lacks a [package.source] subsection:

🏄 cat poetry.lock

[[package]]
category = "main"
description = ""
name = "package1"
optional = false
python-versions = "*"
version = "1.0.0"

[package.dependencies]
package2 = "*"

[package.source]
reference = "cda2190bb927d91a9013736e2a8c7b527258d3fd"
type = "git"
url = "../package1"

[[package]]
category = "main"
description = ""
name = "package2"
optional = false
python-versions = "*"
version = "0.0.0"

# :-(  no section [package.source] 

[...]

[finswimmer]

Hello @weatherfrog ,

thanks a lot for reporting. Could you please check if this also happens with latest preview release?

fin swimmer

[weatherfrog]

@finswimmer I tried. But the above example fails with

[CalledProcessError]
Command '['git', 'clone', 'file://../package2', '/tmp/pypoetry-git-package2as9e91kn']' returned non-zero exit status 128.

Maybe I'd have to use git+https urls rather than referencing git repos on the file system...

[weatherfrog]

^ I guess I ran into #1746.

[github-actions]

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