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scidb-hquery package dependencies failed to build: 2019-10-04T23:13:21Z #248

Closed mdgabriel closed 4 years ago

mdgabriel commented 4 years ago

This is a low priority package because no package depends on it and it fits a niche group. I am the package maintainer of scidb-hquery.

Index-state 2019-10-04T23:13:21Z for my package scidb-hquery 2.8.0.x failed to build because package dependencies failed to build. All previous builds succeeded. What truly confuses me is that my local build with cabal 2.4.x using v2-build, the new style of build, has also stopped working. The compiler is ghc 8..6.5 and the problematic dependency appears to be either regex-1.0.0.0 and regex-1.0.2.0:

[30 of 47] Compiling Text.RE.ZeInternals.SearchReplace ( Text/RE/ZeInternals/SearchReplace.hs, dist/build/Text/RE/ ZeInternals/SearchReplace.o )

Text/RE/ZeInternals/SearchReplace.hs:47:55: error: • Could not deduce (MonadFail m) arising from a use of ‘fail’ from the context: Monad m bound by the type signature for: compileSearchReplace_ :: forall (m :: -> ) s re. (Monad m, Functor m) => (String -> s) -> (String -> Either String re) -> String -> m (SearchReplace re s) at Text/RE/ZeInternals/SearchReplace.hs:(42,1)-(46,47)

As far as I can tell nothing has "changed," but obviously something has changed, and I do not know how to proceed if I want to upload a new version.

Note that my package builds with stack using resolvers from lts-13.19 to lts-14.14.

phadej commented 4 years ago

It's regex, see https://matrix.hackage.haskell.org/#/package/regex

This is https://github.com/haskell-infra/hackage-trustees/issues/243 problem.

I'll look at this tomorrow (Tuesday 2019-11-12) if no other trustee beats me on that.

EDIT: it might be base-compat-0.11 issue too, as there are regex-base bounds.

mdgabriel commented 4 years ago

You are corrected about base-compat-0.11. If in regex-1.0.2.0 I replace in regex.cabal the line

  , base-compat          >= 0.6

with , base-compat >= 0.6 && < 0.11 then regex-1.0.2.0 complies once again. in Changes in 0.11.0 [2019.09.06], there was a backport of MonadFail(fail) to Prelude.Compat and Control.Monad.Compat which is generating the error Could not deduce (MonadFail m) arising from a use of ‘fail’ from the context: Monad m

mdgabriel commented 4 years ago

By the way, thanks for the hint about base-compat-0.11.

mdgabriel commented 4 years ago

Adding

base-compat >= 0.6 && < 0.11 to my package of course fixes my problem so for me this case can be closed since I have uploaded a new version that now compiles with proper constraints.

phadej commented 4 years ago

https://matrix.hackage.haskell.org/#/package/regex/1.0.2.0/ghc-7.10.3@1573730518

reviewed regex bounds