dev-lang/ruby: do a jumpstart on 2.4 removal for hppa and sparc

Ruby 2.4 will go away in near future, but unkeyworded ebuilds specific to this
old version cause dependency breakages. Avoid the need to keyword them at all to
get a clean tree.

Signed-off-by: Rolf Eike Beer <eike@sf-mail.de>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

dev-lang/ruby/ruby-2.4.10.ebuild

@@ -17,7 +17,7 @@ HOMEPAGE="https://www.ruby-lang.org/"
 SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
 
 LICENSE="|| ( Ruby-BSD BSD-2 )"
-KEYWORDS="~alpha amd64 arm arm64 hppa ~mips ppc ppc64 s390 sparc x86"
+KEYWORDS="~alpha amd64 arm arm64 ~mips ppc ppc64 s390 x86"
 IUSE="berkdb debug doc examples gdbm ipv6 jemalloc libressl +rdoc rubytests socks5 +ssl static-libs tk xemacs"
 
 RDEPEND="

profiles/arch/hppa/use.mask

@@ -7,6 +7,10 @@
 # NOTE: When masking a USE flag due to missing keywords, please file a keyword
 # request bug for the hppa arch.
 
+# Rolf Eike Beer <eike@sf-mail.de> (2020-04-21)
+# ruby2.4 will go away soon, avoid keywording older packages
+ruby_targets_ruby24
+
 # Rolf Eike Beer <eike@sf-mail.de> (2020-04-06)
 # media-libs/libvpx is not keyworded, bug #698956
 system-libvpx

profiles/arch/sparc/use.mask

@@ -4,6 +4,10 @@
 # Unmask the flag which corresponds to ARCH.
 -sparc
 
+# Rolf Eike Beer <eike@sf-mail.de> (2020-04-21)
+# ruby2.4 will go away soon, avoid keywording older packages
+ruby_targets_ruby24
+
 # Rolf Eike Beer <eike@sf-mail.de> (2020-04-14)
 # media-libs/opencv not keyworded on sparc
 opencv