pkg/56597: Deinstallation of compat90 destroys netbsd-9

[mlelstv%netbsd.org@localhost]

>Number:         56597
>Category:       pkg
>Synopsis:       Deinstallation of compat90 destroys netbsd-9
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 01 15:00:00 +0000 2022
>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:
Installation of the compat90 on netbsd-9 produces lots of errors since
netbsd-9 libraries already exist.

Deinstallation of the package then deletes the system libraries, leaving it
in a broken state.

This regularly happens when you run pbulk, the build system gets destroyed.
>How-To-Repeat:
Build or install compat90 on a netbsd-9 system.
>Fix:
	

>Unformatted: