-[[ -d /usr/local/opt/coreutils/libexec/gnubin ]] && path=(/usr/local/opt/coreutils/libexec/gnubin $path)
-[[ -d /usr/local/opt/findutils/libexec/gnubin ]] && path=(/usr/local/opt/findutils/libexec/gnubin $path)
-[[ -d /usr/local/opt/gnu-sed/libexec/gnubin ]] && path=(/usr/local/opt/gnu-sed/libexec/gnubin $path)
+if (( $+commands[brew] )); then
+    for pkg in coreutils findutils gnu-sed make; do
+        [[ -d $(brew --prefix $pkg)/libexec/gnubin ]] && path=($(brew --prefix $pkg)/libexec/gnubin $path)
+    done
+fi