macOS package survey

[Jonathan Perkin <jperkin%joyent.com@localhost>]

For those of you using our macOS package repository[0] and who are not
on twitter[1], please could you let me know what OS version you are
using?  I'm looking to potentially upgrade the build environment and
need to know the best target to aim for.

Thanks.

[0] https://pkgsrc.joyent.com/install-on-osx/
[1] https://twitter.com/jperkin/status/1017650822073679872

-- 
Jonathan Perkin  -  Joyent, Inc.  -  www.joyent.com