[MacPorts] #43944: postgresql91-server @9.1.13_0 changes groups of all users

[MacPorts]

#43944: postgresql91-server @9.1.13_0 changes groups of all users
----------------------------------+----------------------------
  Reporter:  dcabrilo@…           |      Owner:  jyrkiwahlstedt
      Type:  defect               |     Status:  assigned
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.3.0
Resolution:                       |   Keywords:
      Port:  postgresql91-server  |
----------------------------------+----------------------------

Comment (by ryandesign):

 Replying to [comment:2 dcabrilo@…]:
 > I didn't move the disk, no. I installed postgresql91-server, then
 noticed the file group problem (without restarting or logging out). I went
 into panic mode and recovered from Time Machine before this installation
 and everything was fine. It's worth mentioning that I installed postgresql
 server months or years before and uninstalled without any problems.

 When you previously installed postgresql server, was it with MacPorts? Or
 some other way? Because if it was with MacPorts, the `postgres` user and
 group would have been created by MacPorts at that time. If it was some
 other way, I can't predict what it would have done or what users or groups
 it would have created with what values.

 > After I recovered from Time Machine, macports were not usable (some
 missing libraries), so I reinstalled them all. I tried to install
 postgresql91-server again, and the same group thing happened. I started
 manually chgrp-ing some directories, and when I uninstalled
 postgresql91-server everything was back to normal.

 I don't see how uninstalling a port could fix this. MacPorts doesn't
 contain any code to remove a user or group once it's been created.

 > Any idea on how I could replicate this? How can I see what "MacPorts
 add_users procedure" is doing exactly, so I can try only those commands?
 This might as well be a bug with OS X.

 Search browser:macports-base/src/port1.0/portutil.tcl for `port adduser`
 and `proc addgroup`.

--
Ticket URL: <https://trac.macports.org/ticket/43944#comment:4>
MacPorts <https://www.macports.org/>
Ports system for macOS