Helix doesn't need "Git integration", just use the following keymap.

[NikitaRevenco]

1. install lazygit
2. add this to your configuration

[keys.normal]
C-g = [
    ":write-all", 
    ":new", 
    ":insert-output lazygit", 
    ":buffer-close!", 
    ":redraw", 
    ":reload-all"
]

Explanation

1. write-all: save all buffers so that the changes can be shown in lazygit and commited right away
2. new: create new empty buffer
3. insert-output lazygit: runs the lazygit command and inserts it's output into the new buffer
4. when you exit lazygit, buffer-close! will kill the previously empty buffer and send you pack to where you were previously
5. redraw is necessary to re-render the UI to show the buffers
6. reload-all because if e.g. you commit everything, helix will still show the symbols indicating that lines were changed / deleted on the left of the line numbers. This will prevent that

[David-Else]

On testing this I am afraid the input is messed up when trying to type into lazygit, this is me pressing the delete key:

Now I can't exit the window.

Any suggestions? I use Kitty and this has been working perfectly:

[keys.normal.C-t]
l = ":sh kitty @ launch --no-response --cwd=current --type=overlay --copy-env lazygit"

[NikitaRevenco]

I'm using wezterm and things work perfectly for me

[David-Else]

I used your cool reload-all idea, but it just doesn't work for me when using kitty overlays:

l = [ ":sh kitty @ launch --no-response --cwd=current --type=overlay --copy-env lazygit", ":reload-all" ]

I think it must be a bug #12077

[ngasull]

I love what I'm reading here: combining tools that greatly do their purpose together. Thanks for sharing such ideas.

One issue I'm facing though is disabled mouse support after execution. Some open issues refer to the same problem, for example #11853. Seems like Helix doesn't check if the sub-command stole mouse support.

In the meanwhile, here is my work around:

[keys.normal]
C-g = [
    ":write-all", 
    ":new", 
    ":insert-output lazygit", 
    ":set mouse false", # First disable mouse to hint helix into activating it
    ":set mouse true",
    ":buffer-close!", 
    ":redraw", 
    ":reload-all"
]