should be good now for the PR build.

only failed on 11.0 now.

Build error:

--  While building package hledger-ui-1.20 using:
      /private/tmp/hledger-20201210-36773-j90789/hledger-1.20/.brew_home/.stack/setup-exe-cache/x86_64-osx/Cabal-simple_mPHDZzAJ_3.0.1.0_ghc-8.8.4 --builddir=.stack-work/dist/x86_64-osx/Cabal-3.0.1.0 build exe:hledger-ui --ghc-options ""
14812
    Process exited with code: ExitFailure 1

 hledger-ui  >    <command line>: can't load framework: Cocoa (not found)

This is the first time I've built Haskell software on macos 11, and the problem seems to be https://gitlab.haskell.org/ghc/ghc/-/issues/18446, affecting all current GHC releases. How are other haskell packages in homebrew dealing with this I wonder ? Maybe they don't require system frameworks ?

It seems like the options for updating (affected?) haskell apps in homebrew right now are:

• wait for the GHC 8.8.5/8.10.3 release; or
• try this workaround, involving custom C code which I guess would have to be included in the checksummed tarball.

Does the workaround work for you locally?

One way to use it when installing formulae would be to declare it in a resource block, though you'll want to choose a specific commit hash to refer to in that.

Also, if upstream already have fixes lined up for the next release, it might be better to just use their patches with existing formulae.

Pinging @SMillerDev, who'll know better about whether a workaround is the right thing to do for Homebrew.

I don't have big sur locally. Thanks for the info, I'll wait to hear from SMiller, but I am inclined to hope that a GHC update will be released and become available in homebrew soon enough.

Whatever is an official patch from upstream we'd want to use.

the problem seems to be https://gitlab.haskell.org/ghc/ghc/-/issues/18446, affecting all current GHC releases

This seems to be affecting a number of other haskell-based builds too. But I suppose that shouldn't be surprising. See #65759, though I am essentially just repeating @simonmichael's comments there.

This should hopefully be unblocked by #67284

Picked up your commits, squashed them and included them here: #67284

Hopefully, it fixes some build failures...

Actually, you can add whatever fixes to hledger so that it builds on ghc 8.10.3 here too. I'll be able to incorporate them into my ghc PR.

Updated to use homebrew's latest ghc; CI is expected to fail for this push, but hopefully will succeed when it's combined with #67284.

Thanks. I've added your commit to the ghc PR.

Switched back to cabal (temporarily ?) since stack + ghc 8.10.3 isn't working just now.

Can you try replacing install_cabal_package to the appropriate calls to system "cabal", etc here?

🤖 A scheduled task has triggered a merge.

⚠️ Bottle publish failed.

@carlocab has triggered a merge.

Thank you!