[MacPorts] #59235: MacVim fails to build on macOS 10.15 Catalina

[MacPorts]

#59235: MacVim fails to build on macOS 10.15 Catalina
---------------------+----------------------
  Reporter:  moyang  |      Owner:  raimue
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.1
Resolution:          |   Keywords:
      Port:  MacVim  |
---------------------+----------------------

Comment (by hexadecagram):

 Replying to [comment:4 mliker]:
 > I believe the patch error only happens when there was already a previous
 unsuccessful build. The actual error is below. I don't get a patch error
 when I run {{{ port clean MacVim }}} before running {{{ port upgrade
 MacVim }}}

 I get the exact same error even with {{{port clean MacVim}}} or {{{port
 clean --all MacVim}}}.  I have also tried {{{sudo xcode-select --switch
 /Applications/Xcode.app/Contents/Developer}}} and it still produces the
 same error.

-- 
Ticket URL: <https://trac.macports.org/ticket/59235#comment:7>
MacPorts <https://www.macports.org/>
Ports system for macOS