[MacPorts] #38345: gnupod: fix variants

[MacPorts]

#38345: gnupod: fix variants
--------------------------+--------------------
 Reporter:  ryandesign@…  |      Owner:  pmq@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.1.3
 Keywords:                |       Port:  gnupod
--------------------------+--------------------
 The gnupod port has variants that only add dependencies:

 {{{
 # should also use timidity
 variant flac description "Enable FLAC" {
     depends_lib-append  port:flac port:p5.12-audio-flac-header
 }

 # should use Ogg::Vorbis::Header::PurePerl, won't work
 variant vorbis description "Enable Ogg/Vorbis" {
     depends_lib-append  port:vorbis-tools port:p5.12-libvorbis-perl
 }

 variant aac description "Enable AAC" {
     depends_lib-append  port:faac path:lib/libavcodec.dylib:ffmpeg
 }

 variant artwork description "Enable artwork support" {
     depends_lib-append  port:ImageMagick
 }
 }}}

 The port needs to be updated to ensure that those dependencies will
 ''not'' be used if those variants are ''not'' selected, even if those
 ports are already installed.

-- 
Ticket URL: <https://trac.macports.org/ticket/38345>
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