[MacPorts] #37029: add active_variants/require_active_variants to pymol

[MacPorts]

#37029: add active_variants/require_active_variants to pymol
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 Reporter:  howarth@…  |      Owner:  macports-tickets@…
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.1.2
 Keywords:             |       Port:  pymol
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 The pymol package requires the base package for tcl (with CoreFoundation
 support disabled)[[BR]]
 and the x11 variant of tk for proper operation. The attached Portfile.diff
 adds the active_variants[[BR]]
 PortGroup to the pymol Portfile and uses require_active_variants entries
 for tcl and tk to set these[[BR]]
 requirements.

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Ticket URL: <https://trac.macports.org/ticket/37029>
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