On Tue, 25 Sep 2012 12:43:00 -0300 Alexis Ballier <aball...@gentoo.org> wrote: > Could you please elaborate on what kind of problems may arise ? The > proposal seems pretty simple and sane to me: PM only has to switch the > useflags that are IUSE_RUNTIME in his installed packages db after > installing the deps and without triggering a rebuild of said package.
a) How do we provide a good user interface for it? It took an awful lot of experimenting to get the exheres-0 suggestions user interface to be good, and it requires quite a bit more information from the package side than this proposal is providing. We want to avoid a REQUIRED_USE here... b) How is consistency checking to be done? Related, what happens when a runtime switch introduces a dependency that then requires a non-runtime rebuild of the original package? c) How do we deal with flag? ( cat/dep[foo] ) or flag? ( >=cat/dep-2.1 ) cases where cat/dep[-foo] or =cat/dep-2.0 is installed and flag is off? From experience, quite a few places where you'd want to use suggestions will break if their suggested package is installed but doesn't meet version or use requirements. However, addressing these probably isn't enough, since this is just the things we had to think about for SDEPEND-style suggestions... There are likely to be things I've not thought of specific to this method that won't crop up until someone tries to deliver a decent implementation. This isn't a trivial feature. -- Ciaran McCreesh
signature.asc
Description: PGP signature
