[MacPorts] #57253: TeXShop4 fails upgrade 10.13.6

[MacPorts]

#57253: TeXShop4 fails upgrade 10.13.6
-----------------------+-------------------------
  Reporter:  basmac    |      Owner:  Schamschula
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  TeXShop4  |
-----------------------+-------------------------

Comment (by Schamschula):

 Looks like the error is

 {{{
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_TeXShop4/TeXShop4/work/texshopsource412/Sources/TSTextView.m:1869:62:
 error: use of undeclared identifier 'NSAppearanceNameDarkAqua'; did you
 mean 'NSAppearanceNameAqua'?
 349         if ((atLeastMojave) && (self.effectiveAppearance.name ==
 NSAppearanceNameDarkAqua))
 350
 ^~~~~~~~~~~~~~~~~~~~~~~~
 351
 NSAppearanceNameAqua
 }}}

 I'm not sure what is happening here. I built TeXShop 4.12 on my machine
 running 10.13.6 before committing. Note: I have Xcode 10 installed.

-- 
Ticket URL: <https://trac.macports.org/ticket/57253#comment:2>
MacPorts <https://www.macports.org/>
Ports system for macOS