040000 tree 8de30ca8034fe6ca9bc5dd0e6ce4b0f66817bb2a	fast
040000 tree 4c542d602893a32658139db35a8a39fa80c55234	install_script
040000 tree 6a30b0733d57222d45f94c17c16cc2d969debb82	installation
040000 tree 9a68a96c4f5a300099951acc9fb854e7abc112a5	slow
040000 tree 8a0e18d1807fd5d7b9bcf3f035a3a45cfc64d537	sourcing