llvm from home:hawkeye116477:waterfox:build-depends project
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Adicionar repositório e instalar manualmente
Para openSUSE Leap 15.4 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:hawkeye116477:waterfox:build-depends/openSUSE_Leap_15.4/home:hawkeye116477:waterfox:build-depends.repo zypper refresh zypper install llvm