pkg/56594: pbulk leaves dangling compat symlinks

[mlelstv%netbsd.org@localhost]

>Number:         56594
>Category:       pkg
>Synopsis:       pbulk leaves dangling compat symlinks
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Dec 31 09:15:00 +0000 2021
>Originator:     mlelstv%netbsd.org@localhost
>Release:        NetBSD 9.99.85
>Organization:
	
>Environment:
	
	
System: NetBSD slowpoke 9.99.85 NetBSD 9.99.85 (SLOWPOKE) #13: Tue Jun 15 22:51:58 UTC 2021 mlelstv@slowpoke:/scratch2/obj.amd64/scratch/netbsd-current/src/sys/arch/amd64/compile/SLOWPOKE amd64
Architecture: x86_64
Machine: amd64
>Description:
After running pbulk, the build hosts have dangling symlinks in /lib pointing
to files in /usr/pkg/emul like this:

lrwxr-xr-x   1 root  wheel       39 Sep 24 13:05 libc.so.12.181 -> /usr/pkg/emul/netbsd/lib/libc.so.12.181
lrwxr-xr-x   1 root  wheel       39 Sep 24 13:05 libedit.so.3.0 -> /usr/pkg/emul/netbsd/lib/libedit.so.3.0
lrwxr-xr-x   1 root  wheel       38 Sep 24 13:05 libevent.so.3 -> /usr/pkg/emul/netbsd/lib/libevent.so.3
lrwxr-xr-x   1 root  wheel       40 Sep 24 13:05 libevent.so.3.2 -> /usr/pkg/emul/netbsd/lib/libevent.so.3.2
lrwxr-xr-x   1 root  wheel       36 Sep 24 13:05 liblzf.so.0 -> /usr/pkg/emul/netbsd/lib/liblzf.so.0
lrwxr-xr-x   1 root  wheel       38 Sep 24 13:05 liblzf.so.0.0 -> /usr/pkg/emul/netbsd/lib/liblzf.so.0.0
lrwxr-xr-x   1 root  wheel       37 Sep 24 13:05 libm.so.0.10 -> /usr/pkg/emul/netbsd/lib/libm.so.0.10
lrwxr-xr-x   1 root  wheel       40 Sep 24 13:05 libutil.so.7.19 -> /usr/pkg/emul/netbsd/lib/libutil.so.7.19
lrwxr-xr-x   1 root  wheel       40 Sep 24 20:48 libcrypto.so.12 -> /usr/pkg/emul/netbsd/lib/libcrypto.so.12
lrwxr-xr-x   1 root  wheel       42 Sep 24 20:48 libcrypto.so.12.0 -> /usr/pkg/emul/netbsd/lib/libcrypto.so.12.0
lrwxr-xr-x   1 root  wheel       37 Sep 24 20:48 libpcap.so.6 -> /usr/pkg/emul/netbsd/lib/libpcap.so.6
lrwxr-xr-x   1 root  wheel       39 Sep 24 20:48 libpcap.so.6.0 -> /usr/pkg/emul/netbsd/lib/libpcap.so.6.0

pbulk erases /usr/pkg, but doesn't clean up symlinks in /lib. It relies on the packages being
correct.

The symlinks are from compat packages, e.g. compat60 leaves the following symlinks:

lrwxr-xr-x   1 root  wheel       39 Dec 31 09:04 libc.so.12.181 -> /usr/pkg/emul/netbsd/lib/libc.so.12.181
lrwxr-xr-x   1 root  wheel       39 Dec 31 09:04 libedit.so.3.0 -> /usr/pkg/emul/netbsd/lib/libedit.so.3.0
lrwxr-xr-x   1 root  wheel       38 Dec 31 09:04 libevent.so.3 -> /usr/pkg/emul/netbsd/lib/libevent.so.3
lrwxr-xr-x   1 root  wheel       40 Dec 31 09:04 libevent.so.3.2 -> /usr/pkg/emul/netbsd/lib/libevent.so.3.2
lrwxr-xr-x   1 root  wheel       36 Dec 31 09:04 liblzf.so.0 -> /usr/pkg/emul/netbsd/lib/liblzf.so.0
lrwxr-xr-x   1 root  wheel       38 Dec 31 09:04 liblzf.so.0.0 -> /usr/pkg/emul/netbsd/lib/liblzf.so.0.0
lrwxr-xr-x   1 root  wheel       37 Dec 31 09:04 libm.so.0.10 -> /usr/pkg/emul/netbsd/lib/libm.so.0.10
lrwxr-xr-x   1 root  wheel       40 Dec 31 09:04 libutil.so.7.19 -> /usr/pkg/emul/netbsd/lib/libutil.so.7.19


>How-To-Repeat:
Run pbulk or install and remove compat packages.

>Fix:
Fix compat packages and make pbulk more aggressive when cleaning up a build host.

>Unformatted: