pkg/41803: ./bootstrap interruption and re-launch requires too much knowledge

[ogi%triangle.bg@localhost]

>Number:         41803
>Category:       pkg
>Synopsis:       ./bootstrap interruption and re-launch requires too much 
>knowledge
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 01 17:35:00 +0000 2009
>Originator:     Ognyan Kulev
>Release:        5.0.1
>Organization:
>Environment:
NetBSD 5.0.1 GENERIC on i386.
>Description:
I had to interrupt ./bootstrap and then re-launch it but error messages were 
shown. Apart from multiple identical bmake error messages, some advice was 
shown that bootstrap-mk-files should be removed. This happens after "rm -fr 
work" and even ./cleanup too. Fortunately, I know some of pkgsrc operation and 
it was no surprise for me that pkg_delete...bootstrap-mk-files... didn't work. 
Then trying after deleting /var/db/pkg and /usr/pkg succeeded.
>How-To-Repeat:
Interrupt ./bootstrap somewhen later in the process and try to re-launch it.
>Fix:
This kind of errors are hard to handle by newbie. Something should be cooked up 
so that error messages are meaningful.

Alternative "fix" is to document this situation and how to cope with it in 
bootstrap/README. BTW ./cleanup is not mentioned there too.