accessibility/gammastep2.0.11

devel/py-xdg: rename to devel/py-pyxdg to match Python package name

While here:
- switch to USE_PYTHON=pep517
- pull in upstream commits addressing Python 3.12, 3.14, 3.15 compat

python.mk: rename PYTHON_EXT_SUFFIX to PYTHON_TAG, document, etc

EXT_SUFFIX, according to PEP 3149, refers to the full tag and
extension for compiled extension module objects, eg .cpython-311.so,
.cpython-313t.so, etc. We do not use the correct semantic meaning,
and this usage becomes ambiguous and confusing when tags do not
match between bytecode and compiled extension module objects.

Rename our PYTHON_EXT_SUFFIX to PYTHON_TAG to align with PEP 3147's
specification of a magic tag, which consists of implementation name
and shorthand version only. This is meant for bytecode and other
files containing this tag in their filename that do not depend on
a specific Python ABI for the same version. Chase all existing
consumers.

Introduce PYTHON_SOABI to align with PEP 3149's specification of a
tag, which consists of implementation name, shorthand version and
any ABI flags present (this and PYTHON_TAG are identical without
ABI flags). This is meant for compiled extension module objects and
other files that depend on a specific Python ABI for the same
version.

Add documentation for these variables that our PYTHON_EXT_SUFFIX
never had.

PR: 274671
Event: Kitchener-Waterloo Hackathon 202506

accessibility/gammastep: Update to 2.0.11

accessibility/gammastep: Update to 2.0.10

devel/py-gobject3: use USE_GNOME=pygobject3 helper

The helper is equivalent to the previous explicit dependency
declaration so no functional or metadata changes.

With hat: gnome
PR: 273722

accessability/gammastep: Adjust the color temperature of your screen

This is very similar to accessability/redshift, and can be used as
a replacement for it.

Suggested by:	diizzy@