unison/unison-src/transcripts/dependents-dependencies-debugfile.md

```ucm:hide
.> builtins.merge
```

### `debug.file`
I can use `debug.file` to see the hashes of the last typechecked file.

Given this .u file:
```unison:hide
structural type outside.A = A Nat outside.B
structural type outside.B = B Int
outside.c = 3
outside.d = c < (p + 1)

structural type inside.M = M outside.A
inside.p = c
inside.q x = x + p * p
inside.r = d
```
```ucm
.> debug.file
```

This will help me make progress in some situations when UCM is being deficient or broken.

### `dependents` / `dependencies`
But wait, there's more.  I can check the dependencies and dependents of a definition:
```ucm
.> add
.> dependents q
.> dependencies q
.> dependencies B
.> dependencies d
.> dependents d
.>
```

We don't have an index for dependents of constructors, but iirc if you ask for that, it will show you dependents of the structural type that provided the constructor.