in reply to Alien::Libxml2 - build error on RedHat
This is just guesswork, but what happens if you try these steps?
Can Perl can load Scalar::Util?
perl -MScalar::Util -e1
Are there lib dirs from other perl versions in your path?
perl -MScalar::Util -E'say join q{ }, @INC'
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Seekers of Perl Wisdom