[MacPorts] #56921: libgcc8 and libgcc-devel conflict

[MacPorts]

#56921: libgcc8 and libgcc-devel conflict
--------------------+-----------------------------------------
 Reporter:  skymoo  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  gcc8, libgcc8, libgcc-devel
--------------------+-----------------------------------------
 Trying to update my system after `gcc8` was updated to 8.2.0 and it's
 failing to activate with:

 {{{
 Failed to activate libgcc8: Image error:
 /opt/local/include/gcc/c++/algorithm is being used by the active libgcc-
 devel port.  Please deactivate this port first, or use 'port -f activate
 libgcc8' to force the activation.
 }}}

 Full build log is attached.

-- 
Ticket URL: <https://trac.macports.org/ticket/56921>
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