Hello. The patch series that Jesse Gibbons submitted in bug#38554 were applied in commits: 6b520177734e1c144fd6394f801919d0b54fa23e c5eb8cf844148fb99934c3fedc3b4a0da55f9d8e c215051dcf30b11c755aea4e2527b4d3d91c34bb
Briefly validated that the reported issue of the repl being unusable seems fixed: ----- $ guix --version guix (GNU Guix) e7a7a483bcda6ec60d9dff3b3aba88dababe035c $ guix environment --pure --ad-hoc python-hy -- hy3 hy 0.18.0 using CPython(default) 3.8.2 on Linux => (+ 1 2) 3 => => ----- Going to go ahead and close.