Tried looking up the CI status of GHC on i686-linux on Cuirass, gave up after 3 pages of ghc-... packages. Also tried the "name" field, as in name:ghc and name:ghc-9.2.5, but neither worked. Regex does not seem to be supported either, so "ghc$" didn't work.
Cuirass should just use the same search rankings are "guix search" does and prioritise exact matches.