I got a new corporate laptop today with RHEL8 pre-installed.  Weechat isn't in the repos, so it needed to be build from source.  Simple:
First, grab the source and unpack it
$ wget https://weechat.org/files/src/weechat-2.6.tar.xz
$ tar xf weechat-2.6.tar.xz
Install the needed development libraries:
$ sudo yum install -y libgcrypt-devel zlib-devel gnutls-devel\
                      libcurl-devel ncurses-devel php-devel \
                      perl-ExtUtils-Embed
Finally built it.  These steps are in the README.adoc file.
$ cd weechat-2.6
$ mkdir build
$ cd build
$ cmake ..
$ make
$ sudo make install
Trust, but verify:
$ weechat -version
2.6
Now happily chat with your IRC friends!
