unison/unison-src/transcripts/cycle-update-3.md

Update a member of a cycle with a type-changing update, thus severing the cycle.

.> builtins.merge

ping : 'Nat
ping _ = !pong + 1

pong : 'Nat
pong _ = !ping + 2

.> add

ping : Nat
ping = 3

.> update
.> view ping pong