[MacPorts] #56158: virt-manager @1.5.1: destroot fails

[MacPorts]

#56158: virt-manager @1.5.1: destroot fails
------------------------+--------------------------
 Reporter:  ryandesign  |      Owner:  danchr
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  virt-manager
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 {{{
 unable to execute 'gtk-update-icon-cache': No such file or directory
 error: command 'gtk-update-icon-cache' failed with exit status 1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56158>
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