On Wed, Jan 19, 2011 at 13:21, Allan McRae <allan@archlinux.org> wrote:
On 19/01/11 23:09, Magnus Therning wrote:
On Wed, Jan 19, 2011 at 13:07, Allan McRae<allan@archlinux.org> wrote:
On 19/01/11 22:49, Magnus Therning wrote:
On Wed, Jan 19, 2011 at 12:50, Allan McRae<allan@archlinux.org> wrote:
On 19/01/11 22:20, Thomas Bächler wrote:
Am 19.01.2011 08:08, schrieb Allan McRae: > > If we want to be really pedantic about dependencies, we should list > _ALL_ dependencies and not remove the ones that are dependencies of > dependencies.
Why don't we just do the correct thing:
If package A depends on package B, and B depends on C, then A might depend on C explicitly because it accesses C directly. Or it might only depend on indirectly C because B accesses C. We should reflect that in dependencies (in the first case, A depends on C, in the second case it doesn't).
The result is this: Whenever the dependencies of B change (e.g., C is removed), A will still work correctly.
I agree that would be the correct thing to do. In fact, I looked at doing this to the extent of including ever package that a program linked to in its dependencies. This increases the number of dependencies needed for the average package in the repos greatly (from memory it averaged a several fold increase).
I don't quite understand what you mean, did you add the transitive closure of all dependencies to the package, or did you only add all direct dependencies?
Essentially "readelf -d" on the files and add all needed packages to the dependencies. I.e. list all packages that are directly linked.
Its has been many years since I did graph theory... but isn't a "transitive closure" essentially what we have been doing with only listing the top level of dependencies and having them cover the rest?
Nope, it's the "opposite":
• A depends on B • B depends on C
If the PKGBUILD for A lists the transitive closure, then it would have
depends=(B C)
As we do now the transitive closure is calculated by pacman in order to make sure all dependencies are installed.
Nope. We currently list depends=(B) and pacman just checks B is installed.
All right, I need to clarify. If B *isn't* installed, then pacman will install both B *and* C; and there's the transitive closure. /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: magnus@therning.org jabber: magnus@therning.org twitter: magthe http://therning.org/magnus