There is a big difference between zypper in --repo Emulators m64py and zypper in --from Emulators m64py. --repo means only from the repo, it won't find dependencies from other repository, which may cause some problems. --from means you install that package from the repo, if some dependencies are not found in the repo, look into other repos.
There is a big difference between
zypper in --repo Emulators m64pyandzypper in --from Emulators m64py.--repomeans only from the repo, it won't find dependencies from other repository, which may cause some problems.--frommeans you install that package from the repo, if some dependencies are not found in the repo, look into other repos.