This emerge output: !!! existing preserved libs: >>> package: dev-libs/libdbusmenu-16.04.0-r1 * - /usr/lib64/libdbusmenu-glib.so.4 * - /usr/lib64/libdbusmenu-glib.so.4.0.12 * used by /opt/android-studio/bin/libdbm64.so (dev-util/android-studio-3.6.3.0.192.6392135) Use emerge @preserved-rebuild to rebuild packages using these libraries is fixed by installing dev-libs/libdbusmenu which appears to be a missing dependency.
I confirm this. I had installed another package, which depends on libdbusmenu. After removed it, did a cleanup and libdbusmenu was removed, but android-studio complains about it. Reinstalled android-studio and still complaining, so indeed, it depends on libdbusmenu.
This issue exists with dev-util/android-studio-4.0.1.0.193.6626763 as well: !!! existing preserved libs: >>> package: dev-libs/libdbusmenu-16.04.0-r1 * - /usr/lib64/libdbusmenu-glib.so.4 * - /usr/lib64/libdbusmenu-glib.so.4.0.12 * used by /opt/android-studio/bin/libdbm64.so (dev-util/android-studio-4.0.1.0.193.6626763)
I have just reproduced this with 4.1.3.0.201.7199119.