-`conduwuit` was removed due to upstream ceasing development and deleting their repository. For existing data, a migration to `matrix-conduit`, `matrix-continuwuity` or `matrix-tuwunel` may be possible.
-`asciidoctor-with-extension` had its `asciidoctor-mathematical` extension removed, because it fails to build, and it is not maintained properly.
- The `ghcInfo` and `controlPhases` functions have been removed from `haskell.lib.compose` and `haskell.lib`. They were unused and would return incorrect results.
- Instead of using `controlPhases`, the `doCheck` attribute of derivations can be accessed which is more accurate. `doBenchmark` can't be introspected at the moment.