GNU Guile 2.9.6 (beta) released

Andy Wingo — December 6, 2019

We are delighted to announce GNU Guile 2.9.6, the sixth beta release in preparation for the upcoming 3.0 stable series. See the release announcement for full details and a download link.

This release fixes bugs caught by users of the previous 2.9.5 prerelease, and adds some optimizations as well as a guile-3 feature for cond-expand.

In this release, we also took the opportunity to do some more rigorous benchmarking:

Comparison of microbenchmark performance for Guile 2.2.6 and 2.9.6

GNU Guile 2.9.6 is a beta release, and as such offers no API or ABI stability guarantees. Users needing a stable Guile are advised to stay on the stable 2.2 series.

As always, experience reports with GNU Guile 2.9.6, good or bad, are very welcome; send them to If you know you found a bug, please do send a note to Happy hacking!