+ if [ ! -z "$IS_DARWIN" ]; then
+ # macos based...
+echo "installing for darwin"
+ if ! whichable brew; then
+ echo "Could not locate the brew installation system."
+ echo "Please install brew, which is required for MacOS feisty meow installs."
+ return 1
+ fi
+ brew install "${packages[@]}"
+ return $?
+ elif whichable apt; then