nixvim: add diffview, gitsigns, which-key. re-enable treesitter. document some keymaps

modules/home/nixvim/keymaps.nix

@@ -1,79 +1,71 @@
 [
-  # cursor navigation
   {
-    # scroll down, recenter
+    options.desc = "scroll down, recenter";
     key = "<C-d>";
     action = "<C-d>zz";
     mode = "n";
   }
   {
-    # scroll up, recenter
+    options.desc = "scroll up, recenter";
     key = "<C-u>";
     action = "<C-u>zz";
     mode = "n";
   }
-
-  # searching
   {
-    # center cursor after search next
+    options.desc = "center cursor after search next";
     key = "n";
     action = "nzzzv";
     mode = "n";
   }
   {
-    # center cursor after search previous
+    options.desc = "center cursor after search previous";
     key = "N";
     action = "Nzzzv";
     mode = "n";
   }
   {
-    # ex command
+    options.desc = "ex command";
     key = "<leader>pv";
     action = "<cmd>Ex<CR>";
     mode = "n";
   }
-
-  # search and replace
   {
-    # search and replace word under cursor
+    options.desc = "search and replace word under cursor";
     key = "<leader>s";
     action = ":%s/<C-r><C-w>/<C-r><C-w>/gI<Left><Left><Left>";
     mode = "n";
   }
-  # search and replace selected text
   {
     key = "<leader>s";
     action = "y:%s/<C-r>0/<C-r>0/gI<Left><Left><Left>";
     mode = "v";
   }
-
-  # clipboard operations
   {
-    # copy to system clipboard in visual mode
+    options.desc = "copy to system clipboard in visual mode";
     key = "<C-c>";
     action = ''"+y '';
     mode = "v";
   }
   {
-    # paste from system clipboard in visual mode
+    options.desc = "paste from system clipboard in visual mode";
     key = "<C-v>";
     action = ''"+p '';
     mode = "v";
   }
   {
-    # yank to system clipboard
+    options.desc = "yank to system clipboard";
     key = "<leader>Y";
     action = "+Y";
     mode = "n";
   }
   {
-    # replace selected text with clipboard content
+    options.desc = "replace selected text with clipboard content";
     key = "<leader>p";
     action = "_dP";
     mode = "x";
   }
   {
-    # delete without copying to clipboard
+    options.desc = "delete without copying to clipboard";
     key = "<leader>d";
     action = "_d";
     mode = [
@@ -81,267 +73,184 @@
       "v"
     ];
   }
-
-  # line operations
   {
-    # move lines down in visual mode
+    options.desc = "move lines down in visual mode";
     key = "J";
     action = ":m '>+1<CR>gv=gv";
     mode = "v";
   }
   {
-    # move lines up in visual mode
+    options.desc = "move lines up in visual mode";
     key = "K";
     action = ":m '<-2<CR>gv=gv";
     mode = "v";
   }
   {
-    # join lines
+    options.desc = "join lines";
     key = "J";
     action = "mzJ`z";
     mode = "n";
   }
-
-  # quickfix
   {
-    # Run make command
+    options.desc = "Run make command";
     key = "<leader>m";
     action = "<cmd>:make<CR>";
     mode = "n";
   }
   {
-    # previous quickfix item
+    options.desc = "previous quickfix item";
     key = "<C-A-J>";
     action = "<cmd>cprev<CR>zz";
     mode = "n";
   }
   {
-    # next quickfix item
+    options.desc = "next quickfix item";
     key = "<C-A-K>";
     action = "<cmd>cnext<CR>zz";
     mode = "n";
   }
-
-  # location list navigation
   {
-    # previous location list item
+    options.desc = "previous location list item";
     key = "<leader>j";
     action = "<cmd>lprev<CR>zz";
     mode = "n";
   }
   {
-    # next location list item
+    options.desc = "next location list item";
     key = "<leader>k";
     action = "<cmd>lnext<CR>zz";
     mode = "n";
   }
-
-  # disabling keys
   {
-    # disable the 'Q' key
+    options.desc = "disable the 'Q' key";
     key = "Q";
     action = "<nop>";
     mode = "n";
   }
-
-  # text selection
   {
-    # select whole buffer
+    options.desc = "select whole buffer";
     key = "<C-a>";
     action = "ggVG";
     mode = "n";
   }
-
-  # window operations
   {
-    # focus next window
+    options.desc = "focus next window";
     key = "<C-j>";
     action = ":wincmd W<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # focus previous window
+    options.desc = "focus next window";
+    key = "<Tab>";
+    action = ":wincmd W<CR>";
+    mode = "n";
+  }
+  {
+    options.desc = "focus previous window";
     key = "<C-k>";
     action = ":wincmd w<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
-  # window size adjustments
   {
-    # increase window width
+    options.desc = "focus previous window";
+    key = "<S-Tab>";
+    action = ":wincmd w<CR>";
+    mode = "n";
+  }
+  {
+    options.desc = "increase window width";
     key = "<C-l>";
     action = ":vertical resize +5<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # decrease window width
+    options.desc = "decrease window width";
     key = "<C-h>";
     action = ":vertical resize -5<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
-  # window closing and opening
   {
-    # close current window
+    options.desc = "close current window";
     key = "<leader-S>c";
     action = ":q<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # new vertical split at $HOME
+    options.desc = "new vertical split at $HOME";
     key = "<leader>n";
     action = ":vsp $HOME<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
-  # window split orientation toggling
   {
-    # toggle split orientation
+    options.desc = "toggle split orientation";
     key = "<leader>t";
     action = ":wincmd T<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
-  # spell checking
   {
-    # toggle spell checking
+    options.desc = "toggle spell checking";
     key = "<leader>ss";
     action = ":setlocal spell!<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # switch to english spell checking
+    options.desc = "switch to english spell checking";
     key = "<leader>se";
     action = ":setlocal spelllang=en_us<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # switch to german spell checking
+    options.desc = "switch to german spell checking";
     key = "<leader>sg";
     action = ":setlocal spelllang=de_20<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # move to next misspelling
+    options.desc = "move to next misspelling";
     key = "]s";
     action = "]szz";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # move to previous misspelling
+    options.desc = "move to previous misspelling";
     key = "[s";
     action = "[szz";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # correction suggestions for a misspelled word
+    options.desc = "correction suggestions for a misspelled word";
     key = "z=";
     action = "z=";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # adding words to the dictionary
+    options.desc = "adding words to the dictionary";
     key = "zg";
     action = "zg";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
-  # buffer navigation
   {
-    # next buffer
+    options.desc = "next buffer";
     key = "<C-S-J>";
     action = ":bnext<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # previous buffer
+    options.desc = "previous buffer";
     key = "<C-S-K>";
     action = ":bprevious<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
   {
-    # close current buffer
+    options.desc = "close current buffer";
     key = "<leader>bd";
     action = ":bdelete<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
-
   {
-    # apply code action
+    options.desc = "apply code action";
     key = "<leader>ca";
     action = ":lua vim.lsp.buf.code_action()<CR>";
-    options = {
-      noremap = true;
-      silent = true;
-    };
     mode = "n";
   }
 ]

modules/home/nixvim/plugins/default.nix

@@ -3,14 +3,17 @@
 {
   imports = [
     ./cmp.nix
+    ./diffview.nix
     ./lsp.nix
+    ./gitsigns.nix
     ./lualine.nix
     ./telescope.nix
-    # ./treesitter.nix # HOTFIX: does not build
+    ./treesitter.nix
     ./trouble.nix
   ];
 
   config.programs.nixvim.plugins = {
+    which-key.enable = lib.mkDefault true;
     markdown-preview.enable = lib.mkDefault true;
     # warning: Nixvim: `plugins.web-devicons` was enabled automatically because the following plugins are enabled. This behaviour is deprecated. Please explicitly define `plugins.web-devicons.enable`
     web-devicons.enable = true;

modules/home/nixvim/plugins/diffview.nix

@@ -0,0 +1,59 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.diffview;
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.diffview = {
+        enable = mkDefault true;
+      };
+
+      # highlight = mkIf plugin.enable {
+      #   DiffAdd = {
+      #     bg = "#2d4a2d";
+      #     fg = "NONE";
+      #   };
+      #   DiffDelete = {
+      #     bg = "#4a2d2d";
+      #     fg = "NONE";
+      #   };
+      #   DiffChange = {
+      #     bg = "#2d3a4a";
+      #     fg = "NONE";
+      #   };
+      #   DiffText = {
+      #     bg = "#1a5a1a";
+      #     fg = "NONE";
+      #   };
+      # };
+
+      keymaps = mkIf plugin.enable [
+        {
+          mode = "n";
+          key = "<leader>gd";
+          action.__raw = ''
+            function()
+              local lib = require("diffview.lib")
+              local view = lib.get_current_view()
+              if view then
+                vim.cmd("DiffviewClose")
+              else
+                vim.cmd("DiffviewOpen")
+              end
+            end
+          '';
+          options = {
+            noremap = true;
+            silent = true;
+            desc = "toggle git diff";
+          };
+        }
+      ];
+    };
+  };
+}

modules/home/nixvim/plugins/gitsigns.nix

@@ -0,0 +1,48 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.fugitive;
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.gitsigns = {
+        enable = mkDefault true;
+        settings = {
+          current_line_blame = mkDefault false;
+          current_line_blame_opts = mkDefault {
+            virt_text = mkDefault true;
+            virt_text_pos = mkDefault "eol";
+          };
+          signcolumn = mkDefault true;
+          signs = {
+            add = {
+              text = mkDefault "+";
+            };
+            change = {
+              text = mkDefault "│";
+            };
+            changedelete = {
+              text = mkDefault "~";
+            };
+            delete = {
+              text = mkDefault "-";
+            };
+            topdelete = {
+              text = mkDefault "-";
+            };
+            untracked = {
+              text = mkDefault "?";
+            };
+          };
+          watch_gitdir = {
+            follow_files = mkDefault true;
+          };
+        };
+      };
+    };
+  };
+}