Configuring `hunk pager` as git `core.pager` strips colors from other git commands

[esclear]

What happened?

I installed hunk using the nix flake and enabled the git integration using the home-manager module and enabling enableGitIntegration.

I have git configured so that it highlights / colors the output of git log and git commands with aliases.
Try for example the following command:

git log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset) %C(dim white)- %an%C(reset)%n''          %C(white)%s%C(reset)' --all

With hunk pager defined as git's core.pager, this is now colorless.

But using eg GIT_PAGER=less git log --graph <etc.>, it is colored.
I'm coming from difftastic, where this works, though it is configured as a diff.external command, which probably won't work for hunk due to its interactive UI.

I expected that hunk keeps the highlighting intact, as less does when used as pager.

Steps to reproduce

• Use the home-manager module, enable hunk and its git integration
• Go to a git repository with non-empty history
• Run and compare the two git commands
  • git log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset) %C(dim white)- %an%C(reset)%n'' %C(white)%s%C(reset)' --all is colorless
  • GIT_PAGER=less git log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset) %C(dim white)- %an%C(reset)%n'' %C(white)%s%C(reset)' --all is colored

Expected behavior

Hunk doesn't strip the coloring of git log and friends

Version

0.14.0