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Python has API that allows you to replace parts of import system with arbitrary Python code.

• maest 7y ago
  If you are talking about the import hooks, I think those require the imported file to have valid python syntax. The import hooks work on the python AST (I think)
  • greenshackle2 7y ago
    I think you are correct, they monkey-patched importlib https://github.com/hylang/hy/blob/master/hy/importer.py#L132 https://github.com/hylang/hy/blob/master/hy/importer.py#L132
    • btwillard 7y ago
      As I recall, patching was simply the most expedient approach. Otherwise, for the changes we needed to make, we would've had to copy a lot of source from the standard loader implementation in CPython for only a few simple changes. https://github.com/hylang/hy/pull/1672 https://github.com/hylang/hy/pull/1672