pkg(nixvim): Add gitsigns plugin

pkgs/nixvim/editor.nix

@@ -6,9 +6,6 @@
     #   flash = {
     #     enable = true;
     #   };
-    #   gitsigns = {
-    #     enable = true;
-    #   };
     #   trouble = {
     #     enable = true;
     #   };

pkgs/nixvim/editor/gitsigns.nix

@@ -0,0 +1,97 @@
+{...}: {
+  youthlic.plugins.gitsigns = {
+    enable = true;
+    luaConfig.post =
+      #lua
+      ''
+        _M.on_load("snacks", function()
+          vim.schedule(function()
+            Snacks.toggle({
+              name = "Git Signs",
+              get = function()
+                return require("gitsigns.config").config.signcolumn
+              end,
+              set = function(state)
+                require("gitsigns").toggle_signs(state)
+              end,
+            }):map("<leader>uG")
+          end)
+        end)
+      '';
+    settings = {
+      current_line_blame = true;
+      signcolumn = true;
+      numhl = true;
+      linehl = false;
+      signs = {
+        add = {text = "┃";};
+        change = {text = "┃";};
+        delete = {text = "";};
+        topdelete = {text = "";};
+        changedelete = {text = "┃";};
+        untracked = {text = "┃";};
+      };
+      signs_staged = {
+        add = {text = "┃";};
+        change = {text = "┃";};
+        delete = {text = "";};
+        topdelete = {text = "";};
+        changedelete = {text = "┃";};
+      };
+      on_attach = {
+        __raw =
+          #lua
+          ''
+            function(buffer)
+              local gs = package.loaded.gitsigns
+
+              local map = function(mode, l, r, desc)
+                vim.keymap.set(mode, l, r, {
+                  buffer = buffer,
+                  desc = desc,
+                })
+              end
+
+              map("n", "]h", function()
+                if vim.wo.diff then
+                  vim.cmd.normal({ "]c", bang = true })
+                else
+                  gs.nav_hunk("next")
+                end
+              end, "Next Hunk")
+              map("n", "[h", function()
+                if vim.wo.diff then
+                  vim.cmd.normal({ "[c", bang = true })
+                else
+                  gs.nav_hunk("prev")
+                end
+              end, "Prev Hunk")
+              map("n", "]H", function()
+                gs.nav_hunk("last")
+              end, "Last Hunk")
+              map("n", "[H", function()
+                gs.nav_hunk("first")
+              end, "First Hunk")
+              map({ "n", "v" }, "<leader>ghs", ":Gitsigns stage_hunk<CR>", "Stage Hunk")
+              map({ "n", "v" }, "<leader>ghr", ":Gitsigns reset_hunk<CR>", "Reset Hunk")
+              map("n", "<leader>ghS", gs.stage_buffer, "Stage Buffer")
+              map("n", "<leader>ghu", gs.undo_stage_hunk, "Undo Stage Hunk")
+              map("n", "<leader>ghR", gs.reset_buffer, "Reset Buffer")
+              map("n", "<leader>ghp", gs.preview_hunk_inline, "Preview Hunk Inline")
+              map("n", "<leader>ghb", function()
+                gs.blame_line({ full = true })
+              end, "Blame Line")
+              map("n", "<leader>ghB", function()
+                gs.blame()
+              end, "Blame Buffer")
+              map("n", "<leader>ghd", gs.diffthis, "Diff This")
+              map("n", "<leader>ghD", function()
+                gs.diffthis("~")
+              end, "Diff This ~")
+              map({ "o", "x" }, "ih", ":<C-U>Gitsigns select_hunk<CR>", "GitSigns Select Hunk")
+            end
+          '';
+      };
+    };
+  };
+}