Difftastic externalDiffCommand doesn't change the diff pager

[raheelrjunaid]

Bug Description

Adding:

git:
  paging:
    externalDiffCommand: difft --color=always

to the LazyGit config does function as expected (as outlined in #2868). Instead, it uses the default/built-in git pager.

CleanShot.2024-03-22.at.14.09.26.mp4

To Reproduce

1. Edit ~/Library/Application\ Support/lazygit/config.yml
2. Add externalDiffCommand (or optionally, add it to your ~/.gitconfig as the default [diff] tool and set `useConfig: true)
3. See that difftastic doesn't work.

Expected behavior

The diff should display the following:

Version info:

build source = homebrew
version = 0.40.2
os = darwin
arch = arm64
git version = 2.44.0

Additional context

• I've confirmed the config is read upon instantiation by adding the notARepository: 'quit' parameter, which works as expected.
• I suspect there's something wrong with reading the config after lazygit is run considering that the above is true. os.editPreset also doesn't work for lvim

[stefanhaller]

This doesn't work in the 0.40.2 release yet. The docs describe the state of master, which isn't released yet. (It's gonna be real soon now.)