[ngoldbaum]

Readers should keep in mind that cython originated from the sage codebase. I bet there's lots of gems in there that many people would like to play with independently of sage.

Will you need to release these modules under the GPL?

[williamstein]

Recently we did factor out the code in sage for Cython signal handling (so you can hit control+c to interrupt blocking Cython code!) into a separate library called cysignals. We changed the license from GPL to BSD when doing this!