(travis) Temporarily disable {halt_on_failure} for cperl

It is not clear whether there is a way around the root cause:
https://github.com/rurban/distroprefs/commit/30792f7e95ca76ac1c1e73d0662dce22168c9df9#commitcomment-17817389

diff --git a/maint/travis-ci_scripts/20_install.bash b/maint/travis-ci_scripts/20_install.bash
index 947bf1e..3a4ff7b 100755 (executable)
--- a/maint/travis-ci_scripts/20_install.bash
+++ b/maint/travis-ci_scripts/20_install.bash
@@ -85,7 +85,7 @@ CPAN_CFG_SCRIPT="
   *CPAN::FirstTime::conf_sites = sub {};
   CPAN::Config->load;
   \$CPAN::Config->{urllist} = [qw{ $CPAN_MIRROR }];
-  \$CPAN::Config->{halt_on_failure} = 1;
+  \$CPAN::Config->{halt_on_failure} = $( is_cperl && echo -n 0 || echo -n 1 );
   CPAN::Config->commit;
 "
 run_or_err "Configuring CPAN.pm" "perl -e '$CPAN_CFG_SCRIPT'"