Move from make to just

nix-flake-update.sh

@@ -2,9 +2,18 @@
 
 set -euo pipefail
 
+arch=$(uname -s)
+
 git pull
 update_msg=$(nix flake update 2>&1 | grep -v 'warning:')
-make
+if [[ $arch == "Linux" ]]; then
+  just build-linux
+elif [[ $arch == "Darwin" ]]; then
+  just build-darwin
+else
+  echo "Unsupported OS: $arch"
+  exit 1
+fi
 git add .
 git commit -S -m "nix flake update: $(TZ=UTC date '+%Y-%m-%d %H:%M:%S %Z')