I am use Ubuntu 14.04 LTS with Perl 5 (v5.18.2), but for new versions of rxvt and surf I need Perl v5.20+.
As solution I found perlbrew and install Perl v5.20, found .deb with rxvt, but anyway cannot install, because it use system Perl.
My question is how to install applications on Linux with Perl dependency and do not break internal compatibility of Linux Core?
That's not true.
rxvt2.7.10 uses a Perl script will work even with 15 year-old 5.6.surf1.0.6 doesn't use Perl at all (assuming you mean this project).Were you to try to install these from source, it wouldn't matter at all what Perl you had available.
Instead, you appear to be trying to install packages built for a system other than yours. To install the
rxvtandsurfpackages you have, you need to have version 5.20 of the distributor'sperlpackage. No matter how many version ofperlyou install, you'll never satisfy that requirement.You can't install those packages. You'll need packages appropriate for your system, or you'll need to install the libraries from source.