The command

guix shell ocaml-core ocaml-core-unix gtk

fails with

builder for `/gnu/store/s9snqp54x2g6sp6a600vw2cqs74i5m2v-gdk-pixbuf-loaders-cache-file.drv' failed due to signal 11 (Segmentation fault).

It works if I do first

guix shell ocaml-core ocaml-core-unix gtk

and then

guix shell gtk

Guix channel: