Re: [gentoo-dev] new glep draft: Portage as a secondary package manager

["Michael Haubenwallner" <michael.haubenwallner@salomon.at>]

----- Original Message -----
From: "Marius Mauch" <genone@gentoo.org>
> Ciaran McCreesh wrote:
<snip>
> As for the new metadata variable, I think it should be a complement to
> RESTRICT (not limited to prefix). As the name for this var I suggest
> SUPPORTS, so for an ebuild that can install into /usr, $PREFIX and $HOME
> it would look like:
> SUPPORTS="prefix prefix-home" (as /usr is implicit)

For the values of the SUPPORTS-Variable (i like the name) i'd prefer some
words pointing to the package-manager used (primary/secondary/home), fex
"secondarypm homepm" or "2ndpm homepm" or the like (more ideas welcome),
because /usr is a 'prefix' too.

But here's just one point to think of how to avoid redundant information in
ebuilds:

The SUPPORTS-Variable _will_ be necessary for home-installation, sure. But
when an ebuild has KEYWORDS='sparc' and SUPPORTS='2ndpm', this does not
automatically imply that it compiles on a 'sparc-solaris' - this keyword has
to be added explicitly.

But how likely is it that on 'sparc-solaris' portage would be the primary
pkg mgr installing into /usr ?

So when an ebuild has 'sparc-solaris' in keywords, imo one can assume that
it _does_ support "secondarypm" (also look at
http://www.gentoo.org/proj/en/glep/glep-0022.html#reasonable-defaults).

Or is this assumption too much implicit ?

Well, right, this will break the bsd keyworded ebuilds when used with a
secondary pm unless they support it, so this would not be a reasonable way
to go, just a point to think of (imo installing into primary prefix with a
secondary pkg mgr is sth. weird...)

~haubi

PS: sorry for beeing offline most of the time, i'm on holiday until May 17,
just sporadically reading mail, and completely offline from May 13


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