Re: [gentoo-osx] prefix ebuild's api suggestion

[Kito]

On Jan 26, 2006, at 11:10 AM, Michael Haubenwallner wrote:

> The idea is to substitute this with a bash-function, echoing a prefix.
>
> This function could be defined to get one argument, which is much like
> the same syntax as the *DEPEND settings, but only for a single
> package.
> If no argument, the current package is used.
>
> Yes, the current implementation would be simple:
>     prefix() {
>         echo $PREFIX
>     }
>
> But the idea behind that is:
>
> Once portage could handle interdomain dependencies, the prefix-api
> need
> not to be changed to let ebuilds find the prefix of their
> dependencies.

So really, portage needs to imitate pkgconfig on some level, probably  
just start by looking in the vdb, shouldn't be too hard in a single  
domain/vdb situation. The interdomain bit is going to depend on many  
factors unknown to me, and not something we should pursue in the  
current 2.x codebase, but I assume saviour has at least the entry  
points to make this possible.

>
> Another possible feature in the future (not finished thinking about
> yet)
> could be to have portage install each (non-system-)package into a
> separate prefix within its domain, without need to change prefix-api.
> This could help ebuild-devs to detect unknown dependencies, which are
> not found implicitly if not specified at configure-line.
> Well - only for a testing system, and to be enabled explicitly
> by setting FEATURES.

This probably isn't as crazy as you might think. With ROOT, and a  
little more work on PREFIX, it should just be a matter of setting  
these appropriately on a per package basis. The other possible use  
for this would be creating package bundles with complete dep trees  
suitable for distribution.

>
> What do you think about this ?
>

=)

--Kito

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