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# encoding: utf-8
# api: pep517
# title: flit backend
# description: wraps flit_core.buildapi
# version: 0.2
# version: 0.3
# depends: python:flit (>=3.0, <4.0)
# license: BSD-3-Clause
# priority: extra
# src: ~/.local/lib/python3.8/site-packages/flit_core/
# This is supposed to become an alternative to pluginconf.setup,
# using flit as pep517 build backend. But adding automagic field
# As alternative to pluginconf.setup, this module is using flit as
# pep517 build backend. But adding automagic field lookup of course.
# lookup of course.
# It can be invoked per `flit-pluginconfig build` and requires
# It can be invoked per `flit-pluginconfig build` and advises
# a `pyproject.toml` like:
#
# [build-system]
# requires = ["flit_core", "pluginconf"]
# requires = ["pluginconf>=0.8", "flit>=3.2", "setuptools"]
# build-backend = "pluginconf.flit"
#
# [project]
# name = "foobar"
# #dynamic = ["version", "description"]
# dynamic = ["version", "description"]
#
# Injecting attributes between ini reading and parameter collection
# turned out easier than expanding on flit_core.buildapi functions.
# And lastly, this just chains to flit.main() to handle setup and
# build steps.
# And lastly, this just chains to flit.main() to handle collect and
# build tasks.
#
# Dynamic handling currently violates all the package tool requirements:
# <https://packaging.python.org/en/latest/specifications/declaring-project-metadata/#dynamic>
# But it does have some interesting side effects.
# * mixes the override text and file inclusion
# license = { file = "LICENSE" }
# * for setuptools compat a long dynamic field is required (but flit hates it)
# dynamic = ["version", "description", "readme", "requires-python",
# "license", "keywords", "classifiers", "urls", "entry-points"]
# Not sure yet if the pyproject.toml specs allow for reconcilation here.
#
""" monkeypatches flint to use pluginconf sources for packaging """
import sys
import re
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""" monkeypatch into module """
def wrapped(func):
setattr(where, func.__name__, func)
wrapped.__doc__ = func.__doc__
return func
return wrapped
# patch_flit_config
@inject(flit_core.config)
def read_flit_config(path):
""" @inject read_flit_config() with forced dynamic fields """
""" @inject patch_flit_config() with forced dynamic fields """
ini = flit_core.config.tomli.loads(path.read_text('utf-8'))
# make fields dynamic
# make fields dynamic (exactly the fields flit allows)
if not "dynamic" in ini["project"]:
ini["project"]["dynamic"] = []
print(ini)
# override make_metadata
# patch_metadata
@inject(flit_core.common)
def make_metadata(module, ini_info):
""" @inject different sourcing order to apply plugin meta fields """
meta = {
"name": module.name,
"provides": [module.name]
}
meta.update(ini_info.metadata)
meta.update(
pmd_meta(
pluginconf.plugin_meta(filename=module.file),
ini_info
)
)
if not meta.get("version"):
meta.update(
flit_core.common.get_info_from_module(module.file, ['version'])
)
#print(meta)
return flit_core.common.Metadata(meta)
# map plugin meta to flit Metadata
def pmd_meta(pmd, ini):
""" enjoin PMD fields with flit.common.MetaData """
pmd = psetup.MetaUtils(pmd)
meta = {
"summary": pmd.description,
"version": pmd.version,
"home_page": pmd.url,
"author": pmd.author, # should split this into mail and name
"author_email": None,
"maintainer": None,
"maintainer_email": None,
"license": pmd.license, # {name=…}
"keywords": pmd.get_keywords(),
"download_url": None,
"requires_python": pmd.python_requires() or ">= 2.7",
"platform": pmd.architecture,
"supported_platform": (),
"requires_python": pmd.python_requires(),
"platform": [],
"supported_platform": pmd.architecture,
"classifiers": list(pmd.classifiers()) + pmd.trove_license() + pmd.trove_status(),
"provides": (),
"requires": pmd.install_requires().get("install_requires") or (),
"obsoletes": (),
"provides": [],
"requires": [], # supposed to override requires_dist if present
"obsoletes": [],
"project_urls": [f"{k}, {v}" for k, v in pmd.project_urls().items()],
"provides_dist": (),
"requires_dist": pmd.install_requires().get("install_requires") or (),
"obsoletes_dist": (),
"requires_external": (),
"provides_extra": (),
"provides_dist": [],
"requires_dist": pmd.install_requires() or [],
"obsoletes_dist": [],
"requires_external": [],
"provides_extra": [],
}
print(meta)
#print(meta)
print(pmd.install_requires())
k[5:]: v for k, v in docs.items()
key[5:]: value for key, value in docs.items()
})
# entry_points are in ini file
for section, entries in pmd.entry_points().items():
ini.entrypoints[section] = ini.entrypoints.get(section, {})
for script in entries:
ini.entrypoints[section].update(
dict(re.findall("(.+)=(.+)", script))
)
print(ini.entrypoints)
#print(ini.entrypoints)
#print(dir(ini))
#print((ini.metadata))
# strip empty entries
return {k: v for k, v in meta.items() if v}
return {
key: value for key, value in meta.items()
if value and not ini.metadata.get(key) #?
}
#-- buildapi
from flit_core.buildapi import ( # These have to be late imports; else they'll
get_requires_for_build_wheel, # bind with the original buildapi functions.
get_requires_for_build_sdist,
get_requires_for_build_editable,
prepare_metadata_for_build_wheel,
prepare_metadata_for_build_editable,
build_wheel,
build_editable,
build_sdist,
)
del inject # omit from docs
#-- invocation point
from flit import main
if __name__ == "__main__":
main(sys.argv)
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