proton?
      ( app-emulation/wine-proton )

staging?
      ( app-emulation/wine-staging[staging
            (+)
      ] )

||
      ( app-emulation/wine-vanilla[abi_x86_32=,abi_x86_64=] app-emulation/wine-proton[abi_x86_32=,abi_x86_64=] app-emulation/wine-staging[abi_x86_32=,abi_x86_64=] )

proton?
      ( games-util/steam-launcher )

staging?
      ( ||
            ( app-emulation/wine-staging[staging] app-emulation/wine-any[staging] )
       )

d3d9?
      ( ||
            ( app-emulation/wine-d3d9[d3d9] app-emulation/wine-any[d3d9] )
       )

||
      ( app-emulation/wine-vanilla[abi_x86_32=,abi_x86_64=] app-emulation/wine-staging[abi_x86_32=,abi_x86_64=] app-emulation/wine-d3d9[abi_x86_32=,abi_x86_64=] app-emulation/wine-any[abi_x86_32=,abi_x86_64=] games-util/steam-launcher )

!app-emulation/wine:0