[MacPorts] #61060: unison @2.51.2_3 is actually version 2.31

[MacPorts]

#61060: unison @2.51.2_3 is actually version 2.31
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  Reporter:  ShadSterling  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.3
Resolution:                |   Keywords:
      Port:  unison        |
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Comment (by ryandesign):

 Aha! You are using the +aqua variant. I was using the +gtk variant.

 With the +gtk variant, the port installs only a single file:
 /opt/local/bin/unison, the real unison program. Running it works normally.

 But with the +aqua variant, it installs a macOS application bundle. That
 app bundle also contains a command line utility called cltool, and the
 port symlinks it to /opt/local/bin/unison. It turns out that tool attempts
 to find the real unison program by using the macOS launch services
 database, looking up the app by its bundle identifier, but if you've
 installed multiple apps with that identifier (one with MacPorts, one
 outside of MacPorts), who knows which one it will pick.

 https://github.com/bcpierce00/unison/blob/master/src/uimac/cltool.c

 We could patch that to refer directly to the copy of Unison that MacPorts
 installed, since we know where that is.

-- 
Ticket URL: <https://trac.macports.org/ticket/61060#comment:3>
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