hass

flake.nix

@@ -134,6 +134,20 @@
       overlays = with inputs; [
         nix-vscode-extensions.overlays.default
         nix-cachyos-kernel.overlays.default
+        # writeShellApplication uses lib.toShellVar which generates unquoted
+        # variable assignments for simple strings (e.g. username=admin).
+        # shellcheck SC2209 flags this as a warning, breaking the build when
+        # the value matches a command name. Exclude SC2209 globally.
+        (final: prev: {
+          writeShellApplication =
+            args:
+            prev.writeShellApplication (
+              args
+              // {
+                excludeShellChecks = (args.excludeShellChecks or [ ]) ++ [ "SC2209" ];
+              }
+            );
+        })
       ];
 
       # Add a module to a specific host.