pkg/42047: lang/swi-prolog-packages demands X server to install

[kre%munnari.OZ.AU@localhost]

>Number:         42047
>Category:       pkg
>Synopsis:       lang/swi-prolog-packages demands X server to install
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Sep 11 10:20:01 +0000 2009
>Originator:     Robert Elz
>Release:        NetBSD 4.0 / i386    pkgsrc current 2009-09-10
>Organization:
        Prince of Songkla University
>Environment:
System: NetBSD jade.coe.psu.ac.th 4.0_STABLE NetBSD 4.0_STABLE 
(JADE-1.696-20080517) #9: Fri May 23 18:55:13 ICT 2008 
kre%jade.coe.psu.ac.th@localhost:/usr/obj/4/kernels/JADE i386
Architecture: i386
Machine: i386
>Description:
        To install lang/swi-prolog-packages apparently requires
        an existing running and usable X server.   That's absurd,
        any information from any X server cannot possibly be relevant
        or useful after the package is installed, nothing (including
        what resolutions, fonts, extensions, ...) that any X server
        might be able to convey at install time is to be expected to
        be even similar to the X server that would be used by any
        of the (possibly many different) users who use the installed
        package.

>How-To-Repeat:
        Create an environment without DISPLAY set, I use pkg_comp
        to achieve that (even if it had a DISPLAY setting, it would
        not have access to the auth files needed to allow access).

        Attempt to install (after successfully building)
        lang/swi-prolog-packages (swi-prolog-packages-5.6.17nb3)
        with DISPLAY unset.

        Expect to see ...

===> Installing for swi-prolog-packages-5.6.17nb3
=> Generating pre-install file lists
Error: Environment variable DISPLAY must be set
       and point to a connectible X server.
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/swi-prolog-packages

>Fix: