mirror of https://github.com/pypa/hatch.git
35 lines
1.4 KiB
Python
35 lines
1.4 KiB
Python
import os
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from ..metadata.core import ProjectMetadata
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from ..plugin.utils import load_plugin_from_script
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from .plugin.interface import BuilderInterface
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class CustomBuilder:
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PLUGIN_NAME = 'custom'
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def __new__(cls, root, plugin_manager=None, config=None, metadata=None, app=None):
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project_metadata = ProjectMetadata(root, plugin_manager, config)
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target_config = project_metadata.hatch.build_targets.get(cls.PLUGIN_NAME, {})
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if not isinstance(target_config, dict):
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raise TypeError('Field `tool.hatch.build.targets.{}` must be a table'.format(cls.PLUGIN_NAME))
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build_script = target_config.get('path', 'build.py')
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if not isinstance(build_script, str):
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raise TypeError('Option `path` for builder `{}` must be a string'.format(cls.PLUGIN_NAME))
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elif not build_script:
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raise ValueError('Option `path` for builder `{}` must not be empty if defined'.format(cls.PLUGIN_NAME))
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path = os.path.normpath(os.path.join(root, build_script))
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if not os.path.isfile(path):
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raise OSError('Build script does not exist: {}'.format(build_script))
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hook_class = load_plugin_from_script(path, build_script, BuilderInterface, 'builder')
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hook = hook_class(root, plugin_manager=plugin_manager, config=config, metadata=metadata, app=app)
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# Always keep the name to avoid confusion
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hook.PLUGIN_NAME = cls.PLUGIN_NAME
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return hook
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