buildpack peotry -> how to configure poetry before poetry install

[luisRubiera]

Hi team! i have a private package on my python/poetry project and i dont know how to apply the configuration of the sources on build time.

the command im running

poetry config repositories.gitlab https://gitlab.com/api/v4[...]/packages/pypi/simple
poetry config http-basic.gitlab __token__ $CI_GITLAB_READ_REGISTRY_TOKEN

which works well in the ci on our job running directly poetry and locally. but when running the cnb poetry as it installs poetry + runs poetry install i dont get how to pass it this commands between the installation of poetry and the installation of the dependencies.

any guide on how to do this?

[luisRubiera]

if anybody is ever looking for this, here my solution:
1- don't use poetry config and use environment variables. (so for my repository called gitlab I need this two variables POETRY_HTTP_BASIC_GITLAB_USERNAME, with value __token__ and POETRY_HTTP_BASIC_GITLAB_PASSWORD with your token)

2- if you're using a build with BP-poetry try to use the buildpack-environment, in my case it didn't work really well because it was only loading from the project.toml and not from environment variables.

2.a - if you succeed with environment variables you just need to add BP_ and the variables on (1) and it will inject them to the poetry
2.b - if you didn't succeed to inject environment variables, create the variables in the project.toml and in the CI do a sed to change it for the code in your runner. here an example:
(in project.toml)

[[io.buildpacks.build.env]]
name = "POETRY_HTTP_BASIC_GITLAB_USERNAME"
value = "__token__"

[[io.buildpacks.build.env]]
name = "POETRY_HTTP_BASIC_GITLAB_PASSWORD"
value = "CI_JOB_TOKEN"

in the CI

 sed -i -e "s/CI_JOB_TOKEN/$CI_GITLAB_READ_REGISTRY_TOKEN/" "$CI_PROJECT_DIR/$APP_DIR/project.toml"

and you only need to declare the variable CI_GITLAB_READ_REGISTRY_TOKEN in your CI (with the access token) and that's it