builder.py

# Copyright (c) 2023, elParaguayo. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
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# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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import sys

from setuptools import build_meta as _orig
from setuptools.build_meta import *  # noqa: F401,F403

WAYLAND_DEPENDENCIES = ["pywlroots>=0.16.4,<0.17.0"]


def wants_wayland(config_settings):
    if config_settings:
        for key in ["Backend", "backend"]:
            if config_settings.get(key, "").lower() == "wayland":
                return True

    return False


def get_requires_for_build_wheel(config_settings=None):
    """Inject pywlroots into build dependencies if wayland requested."""
    reqs = _orig.get_requires_for_build_wheel(config_settings)
    if wants_wayland(config_settings):
        reqs += WAYLAND_DEPENDENCIES

    return reqs


def build_wheel(wheel_directory, config_settings=None, metadata_directory=None):
    """Stop building if wayland requested but pywlroots is not installed."""
    if wants_wayland(config_settings):
        try:
            import wlroots  # noqa: F401
        except ImportError:
            sys.exit("Wayland backend requested but pywlroots is not installed.")

    return _orig.build_wheel(wheel_directory, config_settings, metadata_directory)