Update
Please, update package libgdal and subpackages from 3.0.4 (released in 2020-01-28) to 3.4.2 (current release)
Feature
According to Pypi GDAL page you can also have the GDAL Python bindings built as part of a source build by specifying --with-python as part of your configure line.
If it's possible, make a Configure option to enable python bindings build in libgdal package.
Python bind in libgdal-3.0.4 template
# Template file for 'libgdal'
...
configure_args=" ... --with-python"
makedepends="... python-devel python-setuptools"
python_version=2
...
For some reason i can't put it working with python3, any future success i will report it here.