separate config into files

config/cmp.nix

@@ -0,0 +1,43 @@
+{ ... }: {
+
+    plugins = {
+
+      cmp-nvim-lsp.enable = true;
+
+      cmp = {
+        enable = true;
+        autoEnableSources = true;
+        settings = {
+            sources = [
+                { name = "nvim_lsp"; }
+                { name = "path"; }
+                { name = "buffer"; }
+                { name = "luasnip"; }
+#                { name = "cmdline"; }
+            ];
+
+            completion = {
+                completeopt = "menu,menuone,noinsert";
+            };
+
+            mapping = {
+                "<C-n>" = "cmp.mapping.select_next_item()";
+                "<C-p>" = "cmp.mapping.select_prev_item()";
+                "<C-y>" = "cmp.mapping.confirm({ select = true })";
+                "<C-Space>" = "cmp.mapping.complete()";
+                "<C-e>" = "cmp.mapping.abort()";
+                "<C-b>" = "cmp.mapping.scroll_docs(-4)";
+                "<C-f>" = "cmp.mapping.scroll_docs(4)";
+            };
+
+            snippet.expand = ''
+                function(args)
+                    require("luasnip").lsp_expand(args.body)
+                end
+            '';
+        };
+
+      };
+
+    };
+}