Improve reproduciblity of some packages

I figure these out when trying to run the build in docker, which provides an environment slightly different to the one used when building in qemu/chroot/bwrap with rootfs.py

sysc/perl-5.32.1/perl-5.32.1.sh

@@ -50,4 +50,8 @@ src_install() {
     # Remove messed up manpages
     rm "${DESTDIR}/"*.0
     rm "${DESTDIR}${PREFIX}/lib/perl5/5.32.1/pod/perldebguts.pod"
+
+    # Improve reproducibility. hostcat might be empty or set to "cat /etc/hosts"
+    # depending on whether /etc/hosts was available during the build.
+    sed -i "s_^hostcat='.*'\$_hostcat=''_g" "${DESTDIR}${PREFIX}/lib/perl5/5.32.1/i386-linux/Config_heavy.pl"
 }