haskellPackages: Assorted build fixes

[rvl]

This is for merging into the haskell-updates branch (PR #339272).

Tested the build with:

nix build --impure --expr 'let pkgs = (import ./. { system = "x86_64-linux"; });
in pkgs.haskellPackages.ghcWithHoogle (ps: with ps; [
  gi-gtk-declarative
  gi-gtk-declarative-app-simple
  reflex-gloss
  reflex-gi-gtk
  reflex-sdl2
  pipes-extras
  pipes-http
  vivid
  dear-imgui
])'

Upstream PRs:

• cabal: Allow building with haskell-gi 0.26 owickstrom/gi-gtk-declarative#118
• cabal: Also increase transformers version in the tests Gabriella439/Haskell-Pipes-Extras-Library#19
• Allow bytestring 0.11 Gabriella439/Haskell-Pipes-HTTP-Library#17
• Bump upper bound for various dependencies merijn/broadcast-chan#19

[maralorn]

This is amazingly thorough. Thank you so much.

I was just confused by vivid missing a link until I read the commit message. Would you mind putting that message into a comment anyway? Then the next time someone tries to figure out whether they can drop the override they don’t go looking for the repo.

[rvl]

Would you mind putting that message into a comment anyway?

OK, done, thanks @maralorn.

Also while looking for the author's e-mail address, I noticed that vivid-0.5.2.1 was released about a week ago, which fixes the compile error.

[maralorn]

Excellent!