Solver tries to solve for unneeded internal libs:

```
cabal-version: 2.2
name: bug
version: 0

library
build-depends:
, cabal-plan ^>=0.3.0.0
, base-orphans ^>= 0.8
```

cabal-plan has an internal lib, which depends on `base-orphans ^>= 0.7`, but main-library doesn't depend on that component. There's also an *automatic* flag, which could turn out the executable component (which depends on the internal lib).

*EDIT* even explicitly saying `cabal new-build --constraint='cabal-plan -exe'` doesn't help.

Start by reproducing the cabal-plan and base-orphans dependency case from the issue, including the automatic flag and the explicit --constraint='cabal-plan -exe' variant. Trace the dependency solver's treatment of internal libraries and component reachability; done means unneeded internal libraries are not solved while required components still resolve correctly.

Written by the indexing model from the issue text.