Add --verify to PERL_CPANM_OPT to catch corrupt tarballs

<@ribasushi> ilmari: experiment with mirrors
<@ribasushi> the metacpan proxy of the download part (why?!) is
             sometimes giving back shortened tarballs, which happen to
             extract fine
<@ribasushi> but the source is in fact fucked

diff --git a/maint/travis-ci_scripts/20_install.bash b/maint/travis-ci_scripts/20_install.bash
index 79e75cd..34ebc14 100755 (executable)
--- a/maint/travis-ci_scripts/20_install.bash
+++ b/maint/travis-ci_scripts/20_install.bash
@@ -26,7 +26,7 @@ if [[ "$DEVREL_DEPS" == "true" ]] ; then
 fi
 
 # Fixup CPANM_OPT to behave more like a traditional cpan client
-export PERL_CPANM_OPT="--verbose --no-interactive --no-man-pages $( echo $PERL_CPANM_OPT | sed 's/--skip-satisfied//' )"
+export PERL_CPANM_OPT="--verify --verbose --no-interactive --no-man-pages $( echo $PERL_CPANM_OPT | sed 's/--skip-satisfied//' )"
 
 if [[ -n "$BREWVER" ]] ; then
   # since perl 5.14 a perl can safely be built concurrently with -j$large