[MacPorts] #51619: qt5.depends_component procedure

[MacPorts]

#51619: qt5.depends_component procedure
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  Reporter:  RJVB          |      Owner:  mkae
      Type:  enhancement   |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  qt5, qt5-kde  |
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Comment (by ctreleaven):

 To state the obvious, variants suck.  You all know why...only one variant
 can be the default.  Thus the need for {{{require_active_variants}}.  And
 the buildbots (at least for now) only build the default.  Thus we only
 serve binaries for the default--which is pretty important for something as
 large as Qt.

 As an aside, the current implementation of {{{require_active_variants}}}
 isn't very friendly to novice users.  The word "error" is repeated several
 time while masking the actual polite message to just reinstall port foo
 with variant +bar.  My mythtv-* ports need {{{require_active_variants}}}
 and numerous times users have been convinced that the port is broken when
 they get this result.

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Ticket URL: <https://trac.macports.org/ticket/51619#comment:20>
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