add config

config/plugins/cmp/cmp.nix

@@ -0,0 +1,116 @@
+{
+  plugins = {
+    cmp-emoji.enable = true;
+    cmp-nvim-lsp.enable = true;
+    cmp-buffer.enable = true;
+    cmp-path.enable = true;
+    cmp_luasnip.enable = true;
+    cmp-cmdline.enable = false;
+    cmp = {
+      enable = true;
+      settings = {
+        autoEnableSources = true;
+        experimental = {ghost_text = false;};
+        performance = {
+          debounce = 60;
+          fetchingTimeout = 200;
+          maxViewEntries = 30;
+        };
+        snippet = {expand = "luasnip";};
+        formatting = {fields = ["kind" "abbr" "menu"];};
+        sources = [
+          {name = "git";}
+          {name = "nvim_lsp";}
+          {name = "emoji";}
+          {
+            name = "buffer"; # text within current buffer
+            option.get_bufnrs.__raw = "vim.api.nvim_list_bufs";
+            keywordLength = 3;
+          }
+          {
+            name = "path"; # file system paths
+            keywordLength = 3;
+          }
+          {
+            name = "luasnip"; # snippets
+            keywordLength = 3;
+          }
+        ];
+
+        window = {
+          completion = {border = "solid";};
+          documentation = {border = "solid";};
+        };
+
+        mapping = {
+          "<C-Tab>" =
+            /*
+            lua
+            */
+            "cmp.mapping(cmp.mapping.select_next_item(), {'i', 's'})";
+          "<Down>" =
+            /*
+            lua
+            */
+            "cmp.mapping.select_next_item()";
+          "<Up>" =
+            /*
+            lua
+            */
+            "cmp.mapping.select_prev_item()";
+          "<C-e>" =
+            /*
+            lua
+            */
+            "cmp.mapping.abort()";
+          "<C-b>" =
+            /*
+            lua
+            */
+            "cmp.mapping.scroll_docs(-4)";
+          "<C-f>" =
+            /*
+            lua
+            */
+            "cmp.mapping.scroll_docs(4)";
+          "<C-Space>" =
+            /*
+            lua
+            */
+            "cmp.mapping.complete()";
+          "<CR>" =
+            /*
+            lua
+            */
+            "cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = true })";
+          "<TAB>" =
+            /*
+            lua
+            */
+            ''
+              function(fallback)
+                if cmp.visible() then
+                  cmp.select_next_item()
+                else
+                  fallback()
+                end
+              end
+            '';
+          "<S-TAB>" =
+            /*
+            lua
+            */
+            ''
+              function(fallback)
+                if cmp.visible() then
+                  cmp.select_prev_item()
+                else
+                  fallback()
+                end
+              end
+            '';
+        };
+      };
+    };
+  };
+}

config/plugins/cmp/lspkind.nix

@@ -0,0 +1,9 @@
+{
+  plugins.lspkind = {
+    enable = true;
+    extraOptions = {
+      maxwidth = 50;
+      ellipsis_char = "...";
+    };
+  };
+}

config/plugins/cmp/schemastore.nix

@@ -0,0 +1,13 @@
+{
+  plugins.schemastore = {
+    enable = true;
+
+    json = {
+      enable = true;
+    };
+
+    yaml = {
+      enable = true;
+    };
+  };
+}