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Clarify that the license key in pyprojcet.toml should only be set if it is consistent across all distribution files #1908

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Clarify that the license key in pyprojcet.toml should only be set if it is consistent across all distribution files #1908

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Clarify that the `license` key in `pyprojcet.toml` should only be set…
brettcannon Sep 10, 2025
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brettcannon Sep 10, 2025
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brettcannon Sep 15, 2025
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brettcannon Sep 15, 2025
8242a73
Fix wording in pyproject-toml.rst license section
brettcannon Sep 15, 2025
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9 changes: 9 additions & 0 deletions source/specifications/pyproject-toml.rst
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Expand Up @@ -259,6 +259,12 @@ Text string that is a valid SPDX
as specified in :doc:`/specifications/license-expression`.
Tools SHOULD validate and perform case normalization of the expression.

This key should **only** be specified if the license expression for any
and all distribution files created by a build backend using the
:file:`pyproject.toml` is the same as the one specified. If the license
expression will differ then it should either be specified as dynamic or
not set at all.

Legacy specification
''''''''''''''''''''

Expand Down Expand Up @@ -540,5 +546,8 @@ History
- December 2024: The ``license`` key was redefined, the ``license-files`` key was
added and ``License::`` classifiers were deprecated through :pep:`639`.

- September 2025: Clarity that the ``license`` key applies to all distribution
files generated from the :file:`pyproject.toml` file.


.. _TOML: https://toml.io
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