040000 tree 83f29f3d09c8325d080ed6e5a202bcf1222b77f2	cache-on-google-cloud-storage
040000 tree 53f3ae85c305e4a22ef867757fa3279de25537e1	install-build-deps
040000 tree 9ef95033d11e95cecb7eac5b860aee445d64855b	setup-ccache