Expand comments in .envrc

Signed-off-by: Harry Callahan <[email protected]>

Author: hcallahan-lowrisc

.envrc

@@ -2,9 +2,12 @@
 # Licensed under the Apache License, Version 2.0, see LICENSE for details.
 # SPDX-License-Identifier: Apache-2.0
 
+# Activate the default devShell
 use flake
 
-# create the venv if it doesn't yet exist
+# Create the venv if it doesn't yet exist, and update the project's environment
+# with all useful dependencies that can be run under the nix environment
 [[ -d ".venv" ]] || (uv venv && uv sync --extra=nix)
 
+# Activate the project venv
 . .venv/bin/activate