On Sat, Dec 3, 2016 at 9:47 AM, William L. Thomson Jr. <wlt...@o-sinc.com> wrote: > On Saturday, December 3, 2016 9:33:00 AM EST Michael Orlitzky wrote: >> On 12/03/2016 09:25 AM, William L. Thomson Jr. wrote: >> >> This is generally considered infeasible: >> > I would not think such, just need a wrapper to run around each package >> > that >> > would get its USE flags and re-emerge it a few times. >> >> If a package has 10 USE flags, and if each can be set on/off with no >> constraints, then that gives you 2^10 different ways to emerge it. > > May make the requirements of the host system larger or take more time. I am > sure processing power could handle that load. > > Would be nice if someone like Google would sponsor such efforts. They have > enough hardware and cloud services to make such feasible. >
Have you given thought to how long it would take the largest supercomputer in the world to rebuild libreoffice once for each of the 2^28 USE flag combinations it has (not including USE_EXPAND)? It is certainly possible, but I doubt that you're going to get it dedicated to Gentoo for a few weeks whenever one of its deps changes. This is not a reason to give up on tinderboxing. This is just a reason to be realistic about just what it will do. -- Rich
