install: conform.nvim

config/default.nix

@@ -25,6 +25,7 @@
     ./plugins/ui/lualine.nix
 
     # LSP and formatting
+    ./plugins/lsp/conform.nix
     ./plugins/lsp/lsp.nix
 
     # Git

config/plugins/lsp/conform.nix

@@ -0,0 +1,26 @@
+{pkgs, ...}: 
+
+{
+  plugins.conform-nvim = {
+    enable = true;
+
+    # Run the formatter on file save.
+    formatOnSave = {
+      lspFallback = true;
+      timeoutMs = 500;
+    };
+    # Receive notificaton when a formatter errors.
+    notifyOnError = true;
+
+    # Map of filetype to formatters.
+    formattersByFt = {
+      c = ["clang-format"];
+      nix = ["alejandra"];
+    };
+  };
+  
+  # Install our formatters.
+  extraPackages = with pkgs; [
+    alejandra
+  ];
+}