tree 152ed00c84c4d37f87e17d593d44142acad91678
parent 652c8f0b2817daaa2570b7a3b2147643210f7dc7
author Keith Smiley <keithbsmiley@gmail.com> 1698244774 +0200
committer GitHub <noreply@github.com> 1698244774 +0200
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Add error for empty bzl_library (#457)

This improves the error in the case your bzl_library does nothing.
Otherwise you end up with something weirder later:

```
BUILD:35:12: in deps attribute of bzl_library rule LABEL: 'DEP' does not produce any bzl_library deps files (expected .bzl)
```

Ideally we could set `allow_empty = False` on `srcs` but currently it's
valid to just have a bzl_library target that aggregates multiple other
libraries in its deps.

Co-authored-by: Ivo List <ilist@google.com>