Packages with the pcre2 use flag

app-misc / carbon-c-relay : Enhanced C version of Carbon relay, aggregator and rewriter

  • use dev-libs/libpcre2 as regex implementation

mail-filter / rspamd : Rapid spam filtering system

  • Use dev-libs/libpcre2

net-proxy / haproxy : A TCP/HTTP reverse proxy for high availability environments

  • Enable PCRE2 RegEx support

sys-libs / libselinux : SELinux userland library

  • Use dev-libs/libpcre2 for fcontext regexes