unison/unison-src/transcripts/upgrade-with-old-alias.md

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

```unison
lib.old.foo = 141
lib.new.foo = 142
bar = 141
mything = lib.old.foo + 100
```

```ucm
myproject/main> update
myproject/main> upgrade old new
myproject/main> view mything
myproject/main> view bar
```