unison/unison-src/transcripts/update-type-with-dependent-term.md

```ucm:hide
scratch/main> builtins.merge lib.builtin
```

```unison
unique type Foo = Bar Nat

incrFoo : Foo -> Foo
incrFoo = cases Bar n -> Bar (n+1)
```

```ucm
scratch/main> add
```

```unison
unique type Foo = Bar Nat Nat
```

```ucm:error
scratch/main> update
```