make gitsigns binds get defined when git attaches

after/plugin/gitsigns.lua

@@ -25,4 +25,45 @@ gitsigns.setup {
   preview_config = {
     border = 'shadow',
   },
+
+  on_attach = function(bufnr)
+    local gs = package.loaded.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 return ']c' end
+      vim.schedule(function() gs.next_hunk() end)
+      return '<Ignore>'
+    end, {expr=true})
+
+    map('n', '[c', function()
+      if vim.wo.diff then return '[c' end
+      vim.schedule(function() gs.prev_hunk() end)
+      return '<Ignore>'
+    end, {expr=true})
+
+    -- Actions
+    map('n', '<leader>hs', gs.stage_hunk)
+    map('n', '<leader>hr', gs.reset_hunk)
+    map('v', '<leader>hs', function() gs.stage_hunk {vim.fn.line('.'), vim.fn.line('v')} end)
+    map('v', '<leader>hr', function() gs.reset_hunk {vim.fn.line('.'), vim.fn.line('v')} end)
+    map('n', '<leader>hS', gs.stage_buffer)
+    map('n', '<leader>hu', gs.undo_stage_hunk)
+    map('n', '<leader>hR', gs.reset_buffer)
+    map('n', '<leader>hp', gs.preview_hunk)
+    map('n', '<leader>hb', function() gs.blame_line{full=true} end)
+    map('n', '<leader>tb', gs.toggle_current_line_blame)
+    map('n', '<leader>hd', gs.diffthis)
+    map('n', '<leader>hD', function() gs.diffthis('~') end)
+    map('n', '<leader>td', gs.toggle_deleted)
+
+    -- Text object
+    map({'o', 'x'}, 'ih', ':<C-U>Gitsigns select_hunk<CR>')
+  end
 }

lua/conf/binds.lua

@@ -133,13 +133,6 @@ if pcall(require, "smart-splits") then
   map('n', '<leader>r', smartsplits.start_resize_mode)
 end
 
--- git
-map('n', '<leader>gp', '<cmd>Gitsigns preview_hunk_inline<CR>')
-map('n', '<leader>gs', '<cmd>Gitsigns stage_hunk<CR>')
-map('n', '<leader>gb', '<cmd>Gitsigns blame_line<CR>')
-map('n', '<leader>g]', '<cmd>Gitsigns next_hunk<CR>')
-map('n', '<leader>g[', '<cmd>Gitsigns prev_hunk<CR>')
-
 -- neogen
 if pcall(require, "neogen") then
   map('n', '<leader>df', require("neogen").generate, {