PkgManager: Move default flags to Types.Mode

Switch from --usepkg=n to --usepkg-exclude=*/*, since the latter seems
to behave consistently even if FEATURES=getbinpkg is turned on.

Signed-off-by: hololeap <hololeap@protonmail.com>

Author: hololeap

src/Distribution/Gentoo/Types/Mode.hs

@@ -185,6 +185,7 @@ getExtraRawArgs :: PkgManager -> ExtraRawArgs
 getExtraRawArgs = ExtraRawArgs . \case
     Portage (ReinstallAtomsMode (RATargets t)) ->
         bifoldMap (const []) (bifoldMap fromRAT (const [])) t
+    Portage (PortageBasicMode _) -> ["--usepkg-exclude=*/*"]
     _ -> []
   where
     fromRAT = \case