Using private repos in addition to the official PyPI

• I have searched the issues of this repo and believe that this is not a duplicate.
• I have searched the documentation and believe that my question is not covered.

I think this question has been skimmed in other issues, but not dealt with explicitly.

Question

What is the official way to source dependencies both from the public PyPI and from a private repository? I have:

[[tool.poetry.source]]
name = "pypi_"
url = "https://pypi.org/simple/"

[[tool.poetry.source]]
name = "private"
url = "https://pypi.private.com/simple/"

and it seems to work, but is there are “more official” way to say that I use the official PyPI but if a package is missing there, it should be looked up on “private”? Like pip install --index-url official_pypi --extra-index-url private ...?

[hongquan]

Please also support extra-index-url from command line (not pyproject.toml file).

One use case is that, we need to use peotry install in an Alpine-based Docker container, where musl lib C is used in placed of glibc. The wheel file built for glibc is not always compatible with musl, so we setup a separate repo for musl-based packages. This repo is only used inside Docker container, to run unit test. For production deployment, we use normal glibc environment, that’s why we cannot add this “index URL” to pyproject.toml file (or pip will mistakenly download package from it).

If poetry supports extra-index-url parameter, we just need to modify the installer command in Docker container and things will work well.

[Yanpas]

Official docs as well require http auth poetry config http-basic, but my private repo is read-only for me.

I need one package from it, how can I achieve it? Something like this wiould be cool (same as pip -i):

packagename = 1.0 {repo=myprivaterepo.com}