I downloaded and install TeXmacs-1.99.12.x86_64.rpm from official site. But TeXmacs failed as :
[hf@sword ]$ sudo dnf install TeXmacs-1.99.12.x86_64.rpm
....
Transaction test error:
file /usr/bin/fig2ps from install of TeXmacs-1.99.12-1.1.x86_64 conflicts with file from package fig2ps-1.5-14.fc31.noarch
file /usr/share/man/man1/fig2ps.1.gz from install of TeXmacs-1.99.12-1.1.x86_64 conflicts with file from package fig2ps-1.5-14.fc31.noarch
And I found same issue here. It suggests that removed fig2ps from the package and added requires fig2ps.