lyrathorpe/home/editor.nix

@@ -2,7 +2,7 @@
 # tree, indent guides, fugitive, tmux-navigator, Catppuccin Mocha, 2-space hard
 # tabs, Jenkinsfile=groovy) plus a real LSP stack in place of the inert ALE.
 # Wanted on every host; vi/vim/$EDITOR all launch nvim.
-{ inputs, ... }:
+{ inputs, pkgs, ... }:
 {
   imports = [ inputs.nixvim.homeModules.nixvim ];
 
@@ -16,6 +16,17 @@
     # warn that its pinned nixpkgs was overridden by the input `follows`.
     nixpkgs.source = inputs.nixpkgs;
 
+    # Formatter binaries for conform-nvim (below), matching the repo's treefmt
+    # set. On nvim's PATH only.
+    extraPackages = with pkgs; [
+      nixfmt
+      stylua
+      ruff
+      shfmt
+      prettier
+      gofumpt
+    ];
+
     globals.mapleader = " ";
 
     opts = {
@@ -77,14 +88,55 @@
       cmp = {
         enable = true;
         autoEnableSources = true;
-        settings.sources = [
+        settings = {
+          snippet.expand = "function(args) require('luasnip').lsp_expand(args.body) end";
+          sources = [
             { name = "nvim_lsp"; }
+            { name = "luasnip"; }
             { name = "buffer"; }
             { name = "path"; }
           ];
         };
       };
 
+      # Fuzzy finder (files / live grep / symbols); rg + fd are already on PATH.
+      telescope = {
+        enable = true;
+        extensions.fzf-native.enable = true;
+      };
+      gitsigns.enable = true; # gutter signs, stage-hunk, blame
+      which-key.enable = true; # popup of pending keybindings (leader is Space)
+      trouble.enable = true; # project-wide diagnostics/quickfix list
+      lualine = {
+        enable = true;
+        settings.options.theme = "catppuccin";
+      };
+      comment.enable = true; # gc / gcc comment toggling
+      nvim-autopairs.enable = true;
+      treesitter-textobjects.enable = true;
+      luasnip.enable = true; # snippet engine (drives cmp's luasnip source above)
+
+      # Format-on-save, mirroring the repo's treefmt set. Filetypes with no
+      # formatter here (e.g. terraform) fall back to the LSP formatter.
+      conform-nvim = {
+        enable = true;
+        settings = {
+          formatters_by_ft = {
+            nix = [ "nixfmt" ];
+            lua = [ "stylua" ];
+            python = [ "ruff_format" ];
+            sh = [ "shfmt" ];
+            markdown = [ "prettier" ];
+            go = [ "gofumpt" ];
+          };
+          format_on_save = {
+            timeout_ms = 2000;
+            lsp_format = "fallback";
+          };
+        };
+      };
+    };
+
     keymaps = [
       {
         mode = "n";
@@ -92,6 +144,30 @@
         action = "<cmd>NvimTreeToggle<cr>";
         options.desc = "Toggle file tree";
       }
+      {
+        mode = "n";
+        key = "<leader>ff";
+        action = "<cmd>Telescope find_files<cr>";
+        options.desc = "Find files";
+      }
+      {
+        mode = "n";
+        key = "<leader>fg";
+        action = "<cmd>Telescope live_grep<cr>";
+        options.desc = "Live grep";
+      }
+      {
+        mode = "n";
+        key = "<leader>fb";
+        action = "<cmd>Telescope buffers<cr>";
+        options.desc = "Buffers";
+      }
+      {
+        mode = "n";
+        key = "<leader>xx";
+        action = "<cmd>Trouble diagnostics toggle<cr>";
+        options.desc = "Diagnostics list";
+      }
     ];
 
     # au BufNewFile,BufRead *Jenkinsfile setf groovy