cantor: fix build on Hydra by avoiding parallel building

+3
+3
pkgs/applications/kde/cantor.nix
··· 95 95 "--prefix PATH : ${placeholder "out"}/bin" 96 96 ] ++ lib.optional withSage "--prefix PATH : ${sage-with-env}/bin"; 97 97 98 + # Causes failures on Hydra and ofborg from some reason 99 + enableParallelBuilding = false; 100 + 98 101 meta = with lib; { 99 102 description = "Front end to powerful mathematics and statistics packages"; 100 103 homepage = "https://cantor.kde.org/";