add typehints for directory_layout / Spec.prefix #48652
Merged
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Spec.prefix
returnsspack.util.prefix.Prefix
or raises, but static analysis says it can beNone
which is rather annoying.mypy struggles with getters/setters, so replace the setter with an ordinary function
Spec.set_prefix(...)
, which is also easier to find as a symbol.In the near (?) future we can consider dropping automatic
Spec.prefix
since it couples Spec to a specific store. But it's unlikely to be removed, just it would throw if Spec.set_prefix(...) wasn't called.