editor: setting up neovim again

been using helix for a few years now, but wanted to test the neovim
waters again. mostly just ripped off "neovim for newbs"
https://www.youtube.com/watch?v=zHTeCSVAFNY&list=PLsz00TDipIffreIaUNk64KxTIkQaGguqn

home/private_dot_config/nvim/lua/plugins/completions.lua

@@ -0,0 +1,38 @@
+return {
+  {
+    "hrsh7th/cmp-nvim-lsp",
+  },
+  {
+    "zbirenbaum/copilot-cmp",
+    config = function()
+      require("copilot_cmp").setup()
+    end,
+  },
+  {
+    "hrsh7th/nvim-cmp",
+    config = function()
+      local cmp = require("cmp")
+
+      cmp.setup({
+        window = {
+          completion = cmp.config.window.bordered(),
+          documentation = cmp.config.window.bordered(),
+        },
+        mapping = cmp.mapping.preset.insert({
+          ["<C-b>"] = cmp.mapping.scroll_docs(-4),
+          ["<C-f>"] = cmp.mapping.scroll_docs(4),
+          ["<C-Space>"] = cmp.mapping.complete(),
+          ["<C-e>"] = cmp.mapping.abort(),
+          ["<CR>"] = cmp.mapping.confirm({ select = true }),
+        }),
+        sources = cmp.config.sources({
+          { name = "nvim_lsp" },
+        }, {
+          { name = "buffer" },
+        }, {
+          { name = "copilot" },
+        }),
+      })
+    end,
+  },
+}