[MacPorts] #44671: Coin: Install framework by default and remove variants

[MacPorts]

#44671: Coin: Install framework by default and remove variants
-----------------------------+-------------------
  Reporter:  mark.brethen@…  |      Owner:  css@…
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  Coin            |
-----------------------------+-------------------

Comment (by khindenburg@…):

 Is coin and coin-frameworks suppose to be able to be installed at the same
 time?

 If so, this needs fixed - if not, they should be marked as conflicts

 {{{
 Error: Failed to activate Coin-framework: Image error: /opt/local/bin
 /coin-config is being used by the active Coin port.  Please deactivate
 this port first, or use 'port -f activate Coin-framework' to force the
 activation.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/44671#comment:11>
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