Hello, I tried to install the package defined in this section of the Guix cookbook : https://guix.gnu.org/cookbook/en/guix-cookbook.html#Extended-example
Running `guix package -f example.scm` gives the following error: Backtrace: In guix/store.scm: 2180:25 19 (run-with-store #<store-connection 256.99 7fea884c5dc0> …) In guix/gexp.scm: 914:13 18 (_ _) In guix/store.scm: 2008:8 17 (_ _) In guix/gexp.scm: 299:22 16 (_ _) In guix/store.scm: 2008:8 15 (_ _) In guix/packages.scm: 1977:11 14 (_ _) In guix/gexp.scm: 1201:2 13 (_ #<store-connection 256.99 7fea863822d0>) 1068:2 12 (_ _) 909:4 11 (_ _) In guix/store.scm: 2065:12 10 (_ #<store-connection 256.99 7fea863822d0>) 1382:11 9 (map/accumulate-builds #<store-connection 256.99 7fea8…> …) 1300:8 8 (call-with-build-handler #<procedure 7fea85e07ea0 at g…> …) 2180:25 7 (run-with-store #<store-connection 256.99 7fea863822d0> …) In guix/gexp.scm: 914:13 6 (_ _) In guix/store.scm: 2008:13 5 (_ #<store-connection 256.99 7fea863822d0>) In guix/gexp.scm: 299:51 4 (_) In guix/packages.scm: 2081:2 3 Exception thrown while printing backtrace: error: search-patches: unbound variable ice-9/boot-9.scm:1685:16: In procedure raise-exception: error: search-patches: unbound variable