On Wed, Jan 19, 2011 at 2:07 PM, Pierre Chapuis <catw...@archlinux.us>wrote:
> > Here is an example: > > A depends on B and D > B depends on C > C depends on D and E > > Currently the deps will be: > > A -> B,D > B -> C > C -> D,E > > When installing A, Pacman will: > > 1) check deps for A, start installing B and D > 2) check deps for B and D, start installing C > 3) check deps for C, start installing E > > With a transitive closure scheme at packaging time, the > deps would be: > > A -> B,C,D,E > B -> C,D,E > C -> D,E > > When installing A, Pacman could simply install B, C, D and E > *without* checking their deps (-Sd) because these deps are > necessarily already included in those for A. > > -- > Pierre 'catwell' Chapuis > If B and D are already installed, the current implementation does 2 dependency checks and trasitive closure makes 4. Also, does not pacman need to know that C, D and E must be installed before B? Your approach would probably install B before its dependencies.
