haddock flags are not hashed

[phadej]

Try (with clean store)

cabal haddock --enable-documentation

build succeeds.

Then

cabal haddock --enable-documentation --haddock-for-hackage

then fails with e.g.

haddock: internal error: /cabal/store/ghc-9.2.5/lattices-2.1-d73b3b45d6e9cfdff466bcdd682b8b68f15a545af43b3b9dea31c352516883bc/share/doc/html/doc-index.json: openBinaryFile: does not exist (No such file or directory)

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Apparently also dependencies need to be be built differently when haddock flag changes.

---

However, if I try

cabal haddock --enable-documentation --haddock-quickjump

Then the dependencies are rebuilt.

[ulysses4ever]

#8553 #8326 perhaps related?

[alt-romes]

FWIW I wasn't able to reproduce with Cabal 3.11

[Mikolaj]

Great news. It would be best to track down the PR that fixes this, though, before closing. But if nobody does, I guess we can close once 3.12 is out?