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install/45611: [dM] suggests nonworking postinstall usage

>Number:         45611
>Category:       install
>Synopsis:       [dM] suggests nonworking postinstall usage
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Nov 13 16:45:00 +0000 2011
>Originator:     Mouse
>Release:        NetBSD 5.1
        Seen on

System: NetBSD MVN-Frank.Rodents-Montreal.ORG 5.1 NetBSD 5.1 (MVN) #0: Thu Nov 
10 16:06:20 EST 2011 
mouse%MVN-Frank.Rodents-Montreal.ORG@localhost:/home/mouse/kbuild/MVN i386
Architecture: i386
Machine: i386

        Quite likely present on any with X support.
        I installed a system with a reasonably minimal install; in
        particular, I did not install any X sets.  Then I set up
        /usr/src and /usr/xsrc and did a run to build

        sh ./ -D /home/mouse/i386/DESTDIR -O /home/mouse/i386/OBJDIR -x 
-U build

        After this completed, apparently normally, I installed with

        sh ./ -V USETOOLS=never -V 
TOOLDIR=/home/mouse/i386/OBJDIR/tooldir.NetBSD-5.1-i386 -D 
/home/mouse/i386/DESTDIR -O /home/mouse/i386/OBJDIR -x -U install=/

        (Note in particular that this was a 5.1-on-5.1 build, so the
        host tools and the newly-created tools are compatible.  Note
        also that both runs specified -x.)

        This said, in part,

        postinstall-check ===> .        (with: DESTDIR=/)
           === Post installation checks ===
MAKE=/home/mouse/i386/OBJDIR/tooldir.NetBSD-5.1-i386/bin/nbmake /bin/sh 
/usr/src/usr.sbin/postinstall/postinstall -s /usr/src -d // check; if [ $? -gt 
1 ]; then exit 1; fi
        Source directory: /usr/src
        Target directory: //
        bluetooth check:
        rc check:
                ///etc/rc.d/xdm does not exist
                ///etc/rc.d/xfs does not exist
        ssh check:

        This much is hardly surprising in view of my not installing X
        sets, and is not a problem.  But it also said

        postinstall checks passed: bluetooth ddbonpanic defaults dhcpcd envsys 
fontconfig gid hosts iscsi makedev motd mtree named nosa pam periodic pf ssh 
wscons x11 xkb uid varrwho obsolete
        postinstall checks failed: rc
        To fix, run:
            /usr/src/usr.sbin/postinstall/postinstall -s '/usr/src' -d // fix rc
        Note that this may overwrite local changes.

        However, (a) the recommended command does not run at all
        because postinstall in the source tree has no execute bits, and
        (b) when I work around this by prepending "sh " to it, it does
        not install either of the missing files.  Furthermore, manually
        running postinstall check does not notice the missing xdm and
        xfs, even though they are still missing.

        In an exchange on tech-userlevel, apb said that postinstall
        changes its behaviour based on MKX11 in the environment; when I
        further prepended "env MKX11=yes " to the command, it installed
        xdm and xfs very nicely.

        Thus, it seems to me there are two things that need fixing
        here: (1) needs to recommend running postinstall in a
        way that actually runs, either with an explicit sh (or
        equivalent) or running the installed copy instead of the
        source-tree copy, and (2) the suggested command should include
        everything necessary to make postinstall fix anything it's
        complained about.  (MKX11 might be the only thing needed here;
        I don't know.)

        Remove (or don't install) the xdm and xfs rc.d scripts.  Build
        with (with -x).  Install the resulting build (again,
        with -x).  Notice the resulting alerts.  Try to run the
        suggested command to fix the missing scripts.  Notice it
        doesn't run.  Explicitly supply sh to make it run and notice it
        still doesn't fix anything.
        Dunno.  I don't understand  For that matter, I'm not
        even sure how much of the problem is in (instead of
        various other pieces of build/install machinery).

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