On Wed, 1 May 2019 12:38:41 +0200 Lone_Wolf <[email protected]> wrote:
> On 01-05-2019 05:18, Doug Newgard via aur-general wrote: > > You're still not getting it. The diff you gave shows that the only > > differences > > are in the depends and madedepends arrays. If that's the only difference, > > then > > there *IS NO DIFFERENCE*. A dep on "llvm-libs" is satisfied by > > llvm-libs-git, > > so it works in both cases, just as is intended. There is no editing the > > PKGBUILD needed by users of either option. That's how "provides" works. > > > > Scimmia > > > I know how conflicts/provides/replaces work. > > It seems I failed to make clear that the major problems I see occur at > install and runtime, NOT at buildtime. > > Here's another attempt to explain that. > > > Hypothetical example > > Assumptions : > > mesa-git depends on llvm and llvm-libs > > AUR only has one mesa-git package > > User builds in clean chroot with devtools > > User wants mesa feature X, finds they need to run mesa-git for that. > > > User clones aur mesa-git and builds with extra-x86_64-build > > makepkg sees llvm / llvm-libs dependencies are satisfied by extra/llvm > and extra/llvm-libs. > > mesa-git is build against those versions > > user installs mesa-git, pacman sees llvm-libs is needed and finds > extra/llvm-libs installed. > > > User runs mesa-git, realizes feature X is not working. > > Investigation reveals feature X is not supported by stable llvm, user > needs to built mesa-git against llvm-git. > > User builds llvm-git + llvm-libs-git in clean chroot. > > In order to use the llvm-git for mesa-git building they add the packages > manually to extra-x86_64-build. > > They now have a mesa-git build against llvm-git and install that. > > pacman sees mesa-git depends on llvm-libs , and that's satisfied by > extra/llvm-libs. > > user tries again , mesa-git crashes. > > > User asks for help on forum. > > Someone that understands how mesa and llvm interact, suggests they try > installing llvm-libs-git . > > User installs that, mesa-git works and feature X also works . > > User is happy, tries to figure out how to avoid similar issues in future. > > > Someone points out that the mesa-git crash was caused by pacman being > unaware which llvm-libs binary version was needed. > > Simple solution : edit depends in PKGBUILD to have mesa-git depend on > llvm-git / llvm-libs-git . Full stop. Solution is not to edit the PKGBUILD, solution is for the theoretical user to not be replacing system libraries when they don't have a clue what they're doing. You're trying to overcomplicate the system to account for user stupidity. This is Arch, stop doing that. Scimmia
