nixpkgs/pkgs/development/perl-modules/generic/builder.sh

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source $stdenv/setup
PERL5LIB="$PERL5LIB${PERL5LIB:+:}$out/lib/perl5/site_perl"
perlFlags=
for i in $(IFS=:; echo $PERL5LIB); do
perlFlags="$perlFlags -I$i"
done
oldPreConfigure="$preConfigure"
preConfigure() {
eval "$oldPreConfigure"
find . | while read fn; do
if test -f "$fn"; then
first=$(dd if="$fn" count=2 bs=1 2> /dev/null)
if test "$first" = "#!"; then
echo "patching $fn..."
sed -i "$fn" -e "s|^#\!\(.*\bperl\b.*\)$|#\!\1$perlFlags|"
fi
fi
done
perl Makefile.PL PREFIX=$out INSTALLDIRS=site $makeMakerFlags PERL=$(type -P perl) FULLPERL=\"$fullperl/bin/perl\"
}
if test -n "$perlPreHook"; then
eval "$perlPreHook"
fi
genericBuild
if test -n "$perlPostHook"; then
eval "$perlPostHook"
fi