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Issue

I am using poetry 1.0.0b8. According to the latest documentation (https://github.com/sdispater/poetry/blob/master/docs/docs/repositories.md), if I have a project with a custom source in my pyproject.toml, it will always take precedence when installing packages.

This is not the case: We have a custom python package in our company JFrog that we named pyvault. By chance, there is a package in PyPI with the same name. In any project where we have our internal JFrog as a source, poetry add pyvault still adds the pyvault from PyPI. We can change that by specifying pyvault = { version = "^1.0", source = "jfrog" } in the pyroject.toml, so there is a work around, but the documentation is wrong.