feat(neovim): setup rust debugging

home-manager/neovim/dap.lua

@@ -0,0 +1,34 @@
+local dap, dapui = require("dap"), require("dapui")
+
+dapui.setup()
+
+vim.fn.sign_define("DapBreakpoint", { text = "🛑", texthl = "", linehl = "", numhl = "" })
+
+-- debugging keymaps
+vim.keymap.set("n", "<F5>", dap.continue, { noremap = true, silent = true })
+vim.keymap.set("n", "<F9>", dap.toggle_breakpoint, { noremap = true, silent = true })
+vim.keymap.set("n", "<F10>", dap.step_over, { noremap = true, silent = true })
+vim.keymap.set("n", "<F11>", dap.step_into, { noremap = true, silent = true })
+
+vim.keymap.set("n", "<S-F11>", dap.step_out, { noremap = true, silent = true })
+vim.keymap.set("n", "<F23>", dap.step_out, { noremap = true, silent = true }) -- <Shift-F11> in kitty
+
+vim.keymap.set("n", "<M-k>", dapui.eval, { noremap = true, silent = true })
+
+-- trigger auto-completion in repl
+vim.cmd([[
+    augroup TriggerDapReplAutoCompletion
+        autocmd!
+        autocmd FileType dap-repl lua require("dap.ext.autocompl").attach()
+    augroup END
+]])
+
+dap.listeners.after.event_initialized["dapui_config"] = function()
+    dapui.open()
+end
+dap.listeners.before.event_terminated["dapui_config"] = function()
+    dapui.close()
+end
+dap.listeners.before.event_exited["dapui_config"] = function()
+    dapui.close()
+end

home-manager/neovim/default.nix

@@ -53,8 +53,13 @@ in
     nodePackages.typescript
     nodePackages.dockerfile-language-server-nodejs
     nodePackages.vscode-html-languageserver-bin
+    lldb
+    vscode-extensions.vadimcn.vscode-lldb
   ];
 
+  # symlink for a stable path 
+  home.file.".vscode-extensions/vscode-lldb".source = pkgs.vscode-extensions.vadimcn.vscode-lldb;
+
   programs = {
     neovim = {
       enable = true;
@@ -115,6 +120,10 @@ in
         lua-dev-nvim
         null-ls-nvim
         lsp_lines-nvim
+
+        # debugging
+        nvim-dap
+        nvim-dap-ui
       ];
 
       extraConfig = ''
@@ -146,6 +155,7 @@ in
             vim.opt.background = '${theme}'
 
             ${builtins.readFile ./project-nvim.lua }
+            ${builtins.readFile ./dap.lua }
         EOF
       '';
     };

home-manager/neovim/lspconfig.lua

@@ -73,6 +73,11 @@ for lsp, settings in pairs(servers) do
     })
 end
 
+-- setup rust tools
+local codelldb_base_path = vim.env.HOME .. "/.vscode-extensions/vscode-lldb/share/vscode/extensions/vadimcn.vscode-lldb/"
+local codelldb_bin_path = codelldb_base_path .. 'adapter/codelldb'
+local codelldb_lib_path = codelldb_base_path .. 'lldb/lib/liblldb.so'
+
 require("rust-tools").setup({
     server = {
         on_attach = on_attach,
@@ -89,6 +94,9 @@ require("rust-tools").setup({
         },
         capabilities = capabilities,
     },
+    dap = {
+        adapter = require("rust-tools.dap").get_codelldb_adapter(codelldb_bin_path, codelldb_lib_path)
+    },
 })
 
 local luadev = require("lua-dev").setup({

home-manager/neovim/nvim-cmp.lua

@@ -50,7 +50,25 @@ cmp.setup({
             end
         end, { "i", "s" }),
     }),
-    experimental = { ghost_text = true }
+    experimental = { ghost_text = true },
+    window = {
+        completion = cmp.config.window.bordered(),
+        documentation = cmp.config.window.bordered(),
+    },
+    formatting = {
+        fields = { "menu", "abbr", "kind" },
+        format = function(entry, item)
+            local menu_icon = {
+                nvim_lsp = "λ",
+                luasnip = "⋗",
+                buffer = "Ω",
+                path = "🖿",
+            }
+
+            item.menu = menu_icon[entry.source.name]
+            return item
+        end,
+    },
 })
 
 -- `/` cmdline setup.