[MacPorts] #54366: 2 variant convenience procedures

[MacPorts]

#54366: 2 variant convenience procedures
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  Reporter:  RJVB         |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:
Resolution:               |   Keywords:
      Port:               |
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Comment (by RJVB):

 Oops, that must be

 {{{
     switch_variant mysql56 mysql57 {
         "mysql56" -
         "mysql57" {
             depends_lib-append port:${variant}
         }
         default {
             default_variants +mariadb55
             depends_lib-append port:mariadb
         }
     }
 }}}

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Ticket URL: <https://trac.macports.org/ticket/54366#comment:1>
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