As I see the curlftpfs package is not in the eopkg repository, so I tried to install it manually by downloading the sources.
When I type ./configure, after a bunch of checkings it prints an error: configure: error: "libcurl not found"
I installed curl and curl-devel, but the error is not disappearing.
Anyway the Solus-MATE distro is very promising, but the lack of some essential packages makes harder to set it up for development purposes.