[MacPorts] #63372: cctools @949.0.1_1: circular dependency with llvm-10 on darwin15

[MacPorts]

#63372: cctools @949.0.1_1: circular dependency with llvm-10 on darwin15
-----------------------+-----------------------------
 Reporter:  kencu      |      Owner:  kencu
     Type:  defect     |     Status:  assigned
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:
 Keywords:  elcapitan  |       Port:  cctools llvm-10
-----------------------+-----------------------------
 on darwin15, {{{cctools}}} depends on {{{llvm-10}}} but {{{llvm-10}}}
 depends on {{{cctools}}}

 {{{
 $ sudo port -v install cctools
 --->  Computing dependencies for cctools...
 The following dependencies will be installed:
  cctools
  llvm-10
 Continue? [Y/n]: Y
 Error: The following dependencies were not installed because all of them
 have unmet dependencies (likely due to a dependency cycle): llvm-10
 cctools
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.
 Error: Processing of port cctools failed
 }}}

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Ticket URL: <https://trac.macports.org/ticket/63372>
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