On Fri, Jul 25, 2014 at 03:54:53PM -0400, Ian Stakenvicius wrote:
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> On 25/07/14 03:51 PM, Pacho Ramos wrote:
> > El vie, 25-07-2014 a las 20:46 +0100, Ciaran McCreesh escribió:
> >> On Fri, 25 Jul 2014 21:44:02 +0200 Luis Ressel <ara...@aixah.de>
> >> wrote:
> >>> Okay, I didn't think of that. I'm not sure if the blocker deps
> >>> or the REQUIRED_USE would be more helpful for Portage, but
> >>> generally I think that the REQUIRED_USE error message is quite
> >>> hard to understand for unexperienced users -- much more so than
> >>> the error generated by a blocker dep.
> >>
> >> ...and the fix for that is to scrap REQUIRED_USE and use
> >> pkg_pretend instead.
> >>
> >
> > Could you give an example to let us see how pkg_pretend could be
> > used to achieve the same as REQUIRED_USE?
> >
> > Thanks
> >
> >
>
> pkg_pretend() {
> if use heimdal && use mit-krb5; then
> eerror "Please set only one of the use following flags:"
> eerror "heimdal, mit-krb5"
> die "conflicting use flags set"
> fi
> }I think this could get complicated really quick though. For example, if I have an ebuild with three use flags, flag1/flag2/flag3 with the requirement that one and only one of them must be set, unless bash has an xor operator I don't know about, that is going to need a lot of nesting etc to get right. William
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