[80083] trunk/dports/gnome/gnome-desktop-suite/Portfile

[Ryan Schmidt]

On Jul 3, 2011, at 19:02, jeremyhu at macports.org wrote:

> Revision: 80083
>          http://trac.macports.org/changeset/80083
> Author:   jeremyhu at macports.org
> Date:     2011-07-03 17:02:05 -0700 (Sun, 03 Jul 2011)
> Log Message:
> -----------
> gnome-desktop-suite: Add variants to choose between python versions (2.5, 2.6, and 2.7)
> 
> Modified Paths:
> --------------
>    trunk/dports/gnome/gnome-desktop-suite/Portfile
> 
> Modified: trunk/dports/gnome/gnome-desktop-suite/Portfile
> ===================================================================
> --- trunk/dports/gnome/gnome-desktop-suite/Portfile	2011-07-03 23:51:07 UTC (rev 80082)
> +++ trunk/dports/gnome/gnome-desktop-suite/Portfile	2011-07-04 00:02:05 UTC (rev 80083)
> @@ -5,7 +5,7 @@
> 
> name            gnome-desktop-suite
> version         2.30.2
> -revision        1
> +revision        2
> categories      gnome
> maintainers     devans openmaintainer
> description     The GNOME desktop environment
> @@ -116,7 +116,6 @@
>                 port:libwnck \
>                 port:metacity \
>                 port:nautilus \
> -                port:py26-pygtksourceview \
>                 port:seahorse \
>                 port:seahorse-plugins \
>                 port:swfdec-gnome \
> @@ -163,6 +162,22 @@
>                 port:gnome-system-monitor
> }
> 
> +variant python25 conflicts python26 python27 description {Use python 2.5} {
> +    depends_lib-append        port:py25-pygtksourceview
> +}
> +
> +variant python26 conflicts python25 python27 description {Use python 2.6} {
> +    depends_lib-append        port:py26-pygtksourceview
> +}
> +
> +variant python27 conflicts python25 python26 description {Use python 2.7} {
> +    depends_lib-append        port:py27-pygtksourceview
> +}
> +
> +if {![variant_isset python25] && ![variant_isset python26]} {
> +    default_variants +python27
> +}

But in what way do these variants ensure that that is actually the version of python that will get used?