gentoo-overlay/app-text/xiphos/files/xiphos-4.2.1-appdata_metainfo.patch

--- a/desktop/CMakeLists.txt
+++ b/desktop/CMakeLists.txt
@@ -96,7 +96,7 @@
     )
   # install file
   install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.appdata.xml
-    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/appdata
+    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/metainfo
     COMPONENT data
     )