my_nvim_config/after/plugin/git_stuff.lua

require('gitsigns').setup{
    current_line_blame_opts = {
        virt_text = true,
        virt_text_pos = 'eol', -- 'eol' | 'overlay' | 'right_align'
        delay = 200,
        ignore_whitespace = false,
        virt_text_priority = 100,
    },
    on_attach = function(bufnr)
        local gitsigns = require('gitsigns')

        local function map(mode, l, r, opts)
            opts = opts or {}
            opts.buffer = bufnr
            vim.keymap.set(mode, l, r, opts)
        end

        -- Navigation
        map('n', ']c', function()
            if vim.wo.diff then
                vim.cmd.normal({']c', bang = true})
            else
                gitsigns.nav_hunk('next')
            end
        end)

        map('n', '[c', function()
            if vim.wo.diff then
                vim.cmd.normal({'[c', bang = true})
            else
                gitsigns.nav_hunk('prev')
            end
        end)

        -- Actions
        map('n', '<leader>hs', gitsigns.stage_hunk, { desc = 'stage hunk')
        map('n', '<leader>hr', gitsigns.reset_hunk, 'reset hunk')
        map('n', '<leader>hS', gitsigns.stage_buffer, 'stage buffer')
        map('n', '<leader>hu', gitsigns.undo_stage_hunk, 'undo stage hunk')
        map('n', '<leader>hR', gitsigns.reset_buffer, 'reset buffer')
        map('n', '<leader>hp', gitsigns.preview_hunk, 'preview hunk')
        map('n', '<leader>hb', function() gitsigns.blame_line{full=true} end, 'hunk blame')
        map('n', '<leader>tb', gitsigns.toggle_current_line_blame, 'toggle single line blame')
        map('n', '<leader>hd', gitsigns.diffthis, 'hunk diff')
        map('n', '<leader>hD', function() gitsigns.diffthis('~') end, 'diff deleted')
        map('n', '<leader>td', gitsigns.toggle_deleted, 'toggle deleted')
    end
}