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https://github.com/NixOS/nix.git
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34 lines
930 B
Python
34 lines
930 B
Python
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#!/usr/bin/env python3
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import os
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import subprocess
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import sys
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import shutil
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import typing as t
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def main():
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if len(sys.argv) < 4 or '--' not in sys.argv:
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print("Usage: remove-before-wrapper <output> -- <nix command...>")
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sys.exit(1)
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# Extract the parts
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output: str = sys.argv[1]
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nix_command_idx: int = sys.argv.index('--') + 1
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nix_command: t.List[str] = sys.argv[nix_command_idx:]
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output_temp: str = output + '.tmp'
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# Remove the output and temp output in case they exist
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shutil.rmtree(output, ignore_errors=True)
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shutil.rmtree(output_temp, ignore_errors=True)
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# Execute nix command with `--write-to` tempary output
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nix_command_write_to = nix_command + ['--write-to', output_temp]
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subprocess.run(nix_command_write_to, check=True)
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# Move the temporary output to the intended location
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os.rename(output_temp, output)
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if __name__ == "__main__":
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main()
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