Fish shell configuration to disable git prompt on SSHFS and other network filesystems for better performance

sshfs_git_disable.fish

# Disable git prompt for SSHFS and other network filesystems in Fish shell
# This overrides both standard __fish_git_prompt and Tide's _tide_item_git
# to check filesystem type first and skip git operations on slow filesystems
#
# Installation:
# Place this file in ~/.config/fish/conf.d/sshfs_git_disable.fish
#
# How it works:
# 1. Detects filesystem type using df -T
# 2. Skips git operations for SSHFS, NFS, CIFS, SMB, and rclone mounts
# 3. Works with both vanilla Fish and Tide prompt
# 4. Optionally can exclude specific paths
#
# Author: Dmitry Mikushin (@dmikushin)

if status is-interactive
    # Save the original git prompt function if it exists
    if functions -q __fish_git_prompt
        functions -c __fish_git_prompt __original_fish_git_prompt
    end

    # Override the git prompt function
    function __fish_git_prompt --description 'Conditional git prompt that skips SSHFS'
        # Check filesystem type
        set -l mount_type (df -T . 2>/dev/null | tail -1 | awk '{print $2}')

        # Skip git operations on network filesystems
        if contains -- $mount_type fuse.sshfs sshfs nfs cifs smb fuse.rclone
            # Return empty string for network filesystems
            return
        end

        # Also check for specific slow paths (optional - customize as needed)
        set -l slow_paths \
            /mnt/sshfs \
            /mnt/nfs

        for path in $slow_paths
            if string match -q "$path*" $PWD
                # Return empty string for slow paths
                return
            end
        end

        # Call the original git prompt for local filesystems
        if functions -q __original_fish_git_prompt
            __original_fish_git_prompt $argv
        end
    end

    # For Tide prompt users - disable git module in certain directories
    if functions -q _tide_item_git
        functions -c _tide_item_git __original_tide_item_git

        function _tide_item_git
            # Check filesystem type
            set -l mount_type (df -T . 2>/dev/null | tail -1 | awk '{print $2}')

            # Skip git for network filesystems
            if contains -- $mount_type fuse.sshfs sshfs nfs cifs smb fuse.rclone
                return
            end

            # Check for slow paths (optional - customize as needed)
            set -l slow_paths \
                /mnt/sshfs \
                /mnt/nfs

            for path in $slow_paths
                if string match -q "$path*" $PWD
                    return
                end
            end

            # Call original tide git function
            __original_tide_item_git $argv
        end
    end
end