ghc from devel:languages:haskell:ghc-9.12.x project

需要 Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/devel:languages:haskell:ghc-9.12.x/Tumbleweed/devel:languages:haskell:ghc-9.12.x.repo
zypper refresh
zypper install ghc