[MacPorts] #48667: notmuch: Add support for installing man pages

[MacPorts]

#48667: notmuch: Add support for installing man pages
------------------------+--------------------------------
  Reporter:  cceleri@…  |      Owner:  macports-tickets@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.3.3
Resolution:             |   Keywords:  haspatch
      Port:  notmuch    |
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Comment (by cceleri@…):

 Yes, the man pages will not be installed if the following test fails in
 the configure script
 {{{
 if command -v sphinx-build > /dev/null && ${python} -m
 sphinx.writers.manpage > /dev/null 2>&1 ; then
   ...
 }}}
 where ${python} is set earlier by
 {{{
 for name in python python2 python3; do
     if command -v $name > /dev/null; then
         have_python=1
         python=$name
         ...
 }}}

 We can get the test to pass if one of the py*-sphinx ports is installed
 and there is a symbolic link from python{,2,3} to an installed python*
 port. I would prefer to establish a python{,2,3} symbolic link during the
 build process using something like select, but I was unable to figure out
 how to make that work. Instead, I resorted to patching the configure
 script so that ${python} resolves to something that will work.

 I admit that the above workaround is quite messy. Is there a cleaner way
 to handle this? I was having a lot of trouble figuring how to tell the
 configure script which python I wanted it to use.

-- 
Ticket URL: <https://trac.macports.org/ticket/48667#comment:2>
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