Document error: `Only file sources for code supported`

[stefanv]

When we have two layers of includes, I receive the error:

RuntimeError('Only file sources for code supported')

Is this valid? If so, would it be possible to document it in the README?

Input:

watershed.pyx:

include "heap_watershed.pxi"

heap_watershed.pxi

include "heap_general.pxi"

heap_general.pxi can be empty.

[MarcoGorelli]

Thanks for the report - I'll take a look, I may need to report this to cython

[MarcoGorelli]

Should be fixed in 0.12.2 - thanks again for the report and for helping to make this better! We're getting there 💪

[stefanv]

Awesome, thanks Marco!