valgrind-client-headers-source from openSUSE:ALP:Experimental:Slowroll:Staging project
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Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:ALP:Experimental:Slowroll:Staging/standard/openSUSE:ALP:Experimental:Slowroll:Staging.repo zypper refresh zypper install valgrind-client-headers-source