runningx: fix darwin build

+1 -1
+1 -1
pkgs/tools/X11/runningx/default.nix
··· 16 16 phases = [ "buildPhase" "installPhase" ]; 17 17 18 18 buildPhase = '' 19 - gcc -O2 -o RunningX $(pkg-config --cflags --libs x11) $src 19 + cc -O2 -o RunningX $(pkg-config --cflags --libs x11) $src 20 20 ''; 21 21 22 22 installPhase = ''