Log message:
py-flit_core: make this module standalone

This now needs no other Python modules to build and install.

This is relevant because py-flit_core is currently the recommended
method to bootstrap Python module distributions from scratch.

Bump PKGREVISION.

Log message:
py-flit_core py_flit: updated to 3.9.0

Version 3.9

New options flit build --use-vcs and flit build --no-use-vcs to enable & \ 
disable including all committed files in the sdist. For now --use-vcs is the \ 
default, but this is likely to change in a future version, to bring flit build \ 
in line with standard build frontends like python -m build.
Sdist file names, and the name of the top-level folder in an sdist, are now \ 
normalised, in accordance with PEP 625.
A statically defined version number can now be parsed from files called \ 
version.py, _version.py or __version__.py inside a packge, as well as from \ 
__init__.py, so executing code is required in fewer cases.
Fix setting the flag for regular files in zip metadata.
The timestamp embedded in the gzip wrapper for sdists now defaults to a fixed \ 
date, so building an sdist twice on the same machine should produce identical \ 
results, even without any special steps. Setting SOURCE_DATE_EPOCH is still \ 
recommended for properly reproducible builds.

Log message:
py-flit_core py-flit: updated to 3.8.0

Version 3.8

A project name containing hyphens is now automatically translated to use \ 
underscores for the import name
New option flit install --only-deps to install the dependencies of the package, \ 
but not the package itself.
Add support for recursive globbing (**) in sdist includes and excludes
Python’s bytecode cache files (__pycache__ folders and .pyc files) are now \ 
always excluded from sdists
Use tomllib in Python 3.11, rather than tomli
Fix crash when unable to get a password from keyring
Fix including modified files in sdist when using Mercurial
Fix for some cases of determining whether a package supports Python 2 or not
Fix parsing version number from code using multiple assignments
Document how to use a PyPI token with FLIT_PASSWORD
Fix link to information about environment variables for pip
Link to the docs for the latest stable version in package metadata
Remove a mention of the toml package, which is no longer needed, from the \ 
Developing Flit page
The bootstrap install script for flit_core accepts a new --install-root option.
Ensure the license file is included in packages on PyPI

Log message:
py-flit_core py-flit: updated to 3.7.1

Version 3.7.1

Fix building packages which need execution to get the version number, and have a \ 
relative import in __init__.py.

Version 3.7

Support for external data files such as man pages or Jupyter extension support files.
Project names are now lowercase in wheel filenames and .dist-info folder names, \ 
in line with the specification.
Improved support for bootstrapping a Python environment, e.g. for downstream \ 
packagers. flit_core.wheel is usable with python -m to create wheels before the \ 
build tool is available, and flit_core sdists also include a script to install \ 
itself from a wheel before installer is available.
Use newer importlib APIs, fixing some deprecation warnings

Log message:
py-flit_core: wheel.mk is now standalone, remove extension.mk

Log message:
make py-flit_core use pep517 for building

Log message:
py-flit_core: add setup.py

Log message:
py-flit_core: add missing files