60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
#!/usr/bin/env python3
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import json
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import os
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import sys
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import importlib_metadata
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from packaging.requirements import Requirement
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def error(msg: str) -> None:
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print(f" - {msg}", file=sys.stderr)
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return False
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def check_requirement(req: str):
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# https://packaging.pypa.io/en/stable/requirements.html
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requirement = Requirement(req)
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try:
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version = importlib_metadata.distribution(requirement.name).version
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except importlib_metadata.PackageNotFoundError:
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return error(f"{requirement.name}{requirement.specifier} not present")
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# https://packaging.pypa.io/en/stable/specifiers.html
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if version not in requirement.specifier:
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return error(
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f"{requirement.name}{requirement.specifier} expected, but got {version}"
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)
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return True
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def check_manifest(manifest_file: str):
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with open(manifest_file) as fd:
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manifest = json.load(fd)
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ok = True
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derivation_domain = os.environ.get("domain")
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manifest_domain = manifest["domain"]
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if derivation_domain != manifest_domain:
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ok = False
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error(
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f"Derivation attribute domain ({derivation_domain}) must match manifest domain ({manifest_domain})"
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)
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if "requirements" in manifest:
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for requirement in manifest["requirements"]:
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ok &= check_requirement(requirement)
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if not ok:
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error("Manifest check failed.")
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sys.exit(1)
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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raise RuntimeError(f"Usage {sys.argv[0]} <manifest>")
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manifest_file = sys.argv[1]
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check_manifest(manifest_file)
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