<!-- Hi there! Thank you for discovering and submitting an issue. Before you submit this; let's make sure of a few things. Please make sure the following boxes are ticked if they are correct. If not, please try and fulfill these first. --> <!-- Checked checkbox should look like this: [x] --> - [x] I am on the [latest](https://github.com/python-poetry/poetry/releases/latest) Poetry version. - [x] I have searched the [issues](https://github.com/python-poetry/poetry/issues) of this repo and believe that this is not a duplicate. - [x] If an exception occurs when executing a command, I executed it again in debug mode (`-vvv` option). <!-- Once those are done, if you're able to fill in the following list with your information, it'd be very helpful to whoever handles the issue. --> - **Ubuntu 19.10**: <!-- Replace with version + name --> - **1.0.3**: <!-- Replace with version --> - **https://gist.github.com/matteli/9239b9eab5120f1ff775031036246657**: <!-- Gist Link Here --> ## Issue <!-- Now feel free to write your issue, but please be descriptive! Thanks again 🙌 ❤️ --> When i install [pygit2](https://pypi.org/project/pygit2/#files) with : `poetry add pygit2` pygit2 is installed but the dependency [cffi](https://pypi.org/project/cffi/#files) is not. When i install pygit2 with pip, everything works fine. Matthieu
-vvvoption).Issue
When i install pygit2 with :
poetry add pygit2pygit2 is installed but the dependency cffi is not.
When i install pygit2 with pip, everything works fine.
Matthieu