ImageMagick from devel:gcc:next:testing project
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Add repository and install manually
For devel gcc next openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:gcc:next:testing/devel_gcc_next_openSUSE_Tumbleweed/devel:gcc:next:testing.repo zypper refresh zypper install ImageMagick