LSP: Register keymaps on LspAttach

plugins/lsp/default.nix

@@ -134,6 +134,35 @@ in {
           };
           default = {};
         };
+
+        extra = mkOption {
+          type = with types; listOf helpers.keymaps.mapOptionSubmodule;
+          description = "Extra keymaps to register on 'LspAttach'.";
+          example = [
+            {
+              key = "<leader>lx";
+              action = "<CMD>LspStop<Enter>";
+            }
+            {
+              key = "<leader>ls";
+              action = "<CMD>LspStart<Enter>";
+            }
+            {
+              key = "<leader>lr";
+              action = "<CMD>LspRestart<Enter>";
+            }
+            {
+              key = "gd";
+              action = "require('telescope.builtin').lsp_definitions()";
+              lua = true;
+            }
+            {
+              key = "K";
+              action = "<CMD>Lspsaga hover_doc<Enter>";
+            }
+          ];
+          default = [];
+        };
       };
 
       enabledServers = mkOption {
@@ -231,7 +260,8 @@ in {
     mkIf cfg.enable {
       extraPlugins = [pkgs.vimPlugins.nvim-lspconfig];
 
-      keymaps = let
+      keymapsOnEvents = {
+        "LspAttach" = let
           mkMaps = prefix:
             mapAttrsToList
             (
@@ -258,7 +288,9 @@ in {
             );
         in
           (mkMaps "vim.diagnostic." cfg.keymaps.diagnostic)
-        ++ (mkMaps "vim.lsp.buf." cfg.keymaps.lspBuf);
+          ++ (mkMaps "vim.lsp.buf." cfg.keymaps.lspBuf)
+          ++ cfg.keymaps.extra;
+      };
 
       # Enable all LSP servers
       extraConfigLua = ''

tests/test-sources/plugins/lsp/_lsp.nix

@@ -27,6 +27,29 @@
             desc = "Hover";
           };
         };
+
+        extra = [
+          {
+            key = "<leader>li";
+            action = "<CMD>LspInfo<Enter>";
+          }
+          {
+            key = "<leader>lx";
+            action = "<CMD>LspStop<Enter>";
+          }
+          {
+            key = "<leader>ls";
+            action = "<CMD>LspStart<Enter>";
+          }
+          {
+            key = "<leader>lr";
+            action = "<CMD>LspRestart<Enter>";
+          }
+          {
+            key = "<leader>ll";
+            action = "<CMD>LspLog<Enter>";
+          }
+        ];
       };
 
       servers = {