I can't run `git gui` on macOs Big Sur

Question

When I run git gui on Mac Big Sur . This is what happen :

Mac OS X 10.100 or later required !
error: git-gui died of signal 6

I also install xcode 12 beta 3 and xcodebuild -version stays Xcode 11.6 .

How can I solve those problems ?

Answer 1

A variety of things I had to do to fix this:

Update tcl (not sure if this was required for git gui, but it was necessary for gitk):

 brew install tcl

Install git-gui directly:

brew install git-gui

Ensure macOS is using the correct git (assuming here that you have already installed a version from this decade):

export PATH="/usr/local/bin:${PATH}"

Answer 2

It's working again on macOS Big Sur 11.2 (20D64)

Just need to update your OS

Update: After a while, the issue happened again even after I update my macOS to 11.2.1 (20D74). But with a different message who said there is an unmatched exception "NSInternalInconsistencyException".

 *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: CGRectContainsRect(CGRectMake((CGFloat)INT_MIN, (CGFloat)INT_MIN, (CGFloat)INT_MAX - (CGFloat)INT_MIN, (CGFloat)INT_MAX - (CGFloat)INT_MIN), frame)'

I fix it with:

git config --local --unset gui.geometry

that mentioned in this answer