diff --git a/modules/vscodium.nix b/modules/vscodium.nix
index e561779..bcc79c6 100644
--- a/modules/vscodium.nix
+++ b/modules/vscodium.nix
@@ -7,19 +7,22 @@
     (vscode-with-extensions.override {
       vscode = vscodium;
       vscodeExtensions = with vscode-extensions; [
-        #bbenoist.nix
         #ms-azuretools.vscode-docker
         #ms-vscode-remote.remote-ssh
 
-        # https://marketplace.visualstudio.com/items?itemName=yzhang.markdown-all-in-one
-        # https://github.com/yzhang-gh/vscode-markdown
-        yzhang.markdown-all-in-one
-
+        # Load environment from `shell.nix`.
         # https://matthewrhone.dev/nixos-vscode-environment
-        # https://marketplace.visualstudio.com/items?itemName=arrterian.nix-env-selector
+        # https://github.com/arrterian/nix-env-selector
         arrterian.nix-env-selector
 
-        # IntelliSense (Pylance), Linting, Debugging (multi-threaded, remote), code formatting, refactoring, unit tests, and more.
+        # Extended Markdown support, e.g. insert TOC.
+        # https://github.com/yzhang-gh/vscode-markdown
+        yzhang.markdown-all-in-one
+        # Nix language support.
+        # https://github.com/bbenoist/vscode-nix
+        bbenoist.nix
+        # Python language support:
+        # IntelliSense (Pylance), Linting, Debugging, code formatting, unit tests, etc.
         ms-python.python
       ];
     })