invalid path to the Build module on ubuntu

[dmach]

$ podman run -it ubuntu:latest
$ apt-get update
$ apt-get install obs-build
$ /usr/lib/obs-build/queryconfig
Can't locate Build.pm in @INC (you may need to install the Build module) (@INC entries checked: /usr/lib/build /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.38.2 /usr/local/share/perl/5.38.2 /usr/lib/x86_64-linux-gnu/perl5/5.38 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.38 /usr/share/perl/5.38 /usr/local/lib/site_perl) at /usr/lib/obs-build/queryconfig line 29.
BEGIN failed--compilation aborted at /usr/lib/obs-build/queryconfig line 29.

The problem seems to be in the following lines:

BEGIN {
  unshift @INC, ($::ENV{'BUILD_DIR'} || '/usr/lib/build');
}

It should the directory queryconfig is located in.
That would also make it work for git checkouts.

It seems that most of the files would require such change.

[dmach]

How about to replace the code with the following?

use File::Basename;

BEGIN {
  unshift @INC, ($::ENV{'BUILD_DIR'} || dirname(__FILE__));
}

File::Basename is used in other places, so no changes in deps are needed.