games-util/steam-client-meta[!steamruntime] depends on it too. $ equery d libpng ... games-util/steam-client-meta-0-r20190506 (!steamruntime ? media-libs/libpng:1.2[abi_x86_32]) games-util/steam-games-meta-0-r20190316 (steamgames_source_engine ? media-libs/libpng:1.2[abi_x86_32]) ... Reproducible: Always
Created attachment 595428 [details] emerge --info
Close this bug please. There is media-libs/libpng-compat:1.2 for a very long time already, games-util/steam-client-meta and games-util/steam-games-meta depend on it.