haskellPackages.github: Loosen version bounds at 0.26

[gtgteq]

Motivation for this change

Gets github and spago building again.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[sternenseemann]

Thanks a lot, that fixes the build indeed!

Could you please rebase against the haskell-updates branch and change the target branch of this PR as well? We usually accumulate all Haskell-related changes and fixes into that branch and then stabilize and merge them together into master. The next PR to be merged is #116965 (it got delayed due to the OpenSSL update).

@cdepillabout Since you are maintainer for spago in haskellPackages: Do you think spago should get a fix on master as well? We did break quite significant packages in the last merge unfortunately — we've already ported fixes for niv and darcs to master in the last week…

[sternenseemann]

Could you also add a comment above describing why this patch was added and when it can be removed (presumably at the next release if it was picked from github's master branch).

This helps with cleaning up unnecessary overrides.

[cdepillabout]

Looks good, looks like this builds! Thanks!

Do you think spago should get a fix on master as well?

If fixes are already in haskell-updates, I generally don't directly fix on master.

However, I don't necessarily feel strongly about this either way. If there are some spago users that absolutely want spago working on master, I'm completely fine with fixing it directly on master.