Enable reading project's version number dynamically from somewhere other than pyproject.toml

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• I have searched the documentation and believe that my question is not covered.

Feature Request

I’m working on a project where we would like to adopt poetry. One aspect of our long-established workflow is that our version numbers are maintained a changelog file. We currently parse that file in setup.py to ensure that when we install the project, the version number is always correct.

poetry seems to only support reading the version from pyproject.toml which is obviously a static configuration file and so doesn’t support logic as setup.py does. Is there, or could there be, a way to dynamically read the version from somewhere else? (The obvious workaround is to make the change manually ourselves as part of our release process, but anything you rely on a human to do is liable to suffer human error sooner or later!)

[tiangolo]

Cross-posting my comment from: https://github.com/python-poetry/poetry/pull/2366#issuecomment-849615115 as it seems it’s relevant here too.

Sorry if it feels like spam, but I think people subscribed to this issue might not be subscribed to that one and could miss this.

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I just made a plugin (available with Poetry 1.2.0a1 and above) to read the version from an __init__.py file:

# __init__.py

__version__ = "0.1.0"

or from a git tag, set with a GitHub release or with:

$ git tag 0.1.0

I thought this could be useful for others here too.

https://github.com/tiangolo/poetry-version-plugin

[finswimmer]

Hello @burrscurr,

please see my comment at https://github.com/python-poetry/poetry/pull/2366#issuecomment-652418094 about what you can do.

Hello @maxgrenderjones,

this is a question that raises from time to time. Also me was asking this a while ago (https://github.com/python-poetry/poetry/issues/1314#issuecomment-530366576). However, generate or read the version number dynamic from somewhere, makes it hard for dependency resolution tools like poetry, to get this value, when it needs to install something from source. Version numbers should belong to the static metadata and there should be only one place of truth for it. In case of poetry this is the pyproject.toml. Saying this we currently tend to not implement any dynamic reading from another place.

fin swimmer