Flit-core is the distribution-building parts of Flit (a packaging tool for simple Python modules).
Build the package:
pip3 wheel -w dist --no-cache-dir --no-build-isolation --no-deps $PWD
Install the package:
pip3 install --no-index --find-links dist flit_core
The meaning of the pip3 configuration options and commands:
This command builds the wheel archive for this package.
-w distInstructs pip to put the created wheel into the
dist directory.
--no-cache-dirPrevents pip from copying the created wheel into the
/root/.cache/pip
directory.
This command installs the package.
--no-build-isolation,
--no-deps, and
--no-indexThese options prevent fetching files from the online package repository (PyPI). If packages are installed in the correct order, pip won't need to fetch any files in the first place; these options add some safety in case of user error.
--find-links distInstructs pip to search for wheel archives in the
dist directory.