dev-lang/ruby: backport fix for tty test to 3.1

Closes: https://bugs.gentoo.org/935809
Signed-off-by: Hans de Graaff <graaff@gentoo.org>

dev-lang/ruby/files/3.1/012-test-readline-without-tty.patch

@@ -0,0 +1,33 @@
+From 47988e63d65098ce1e6484f03ae5e2ca42bd7963 Mon Sep 17 00:00:00 2001
+From: Sorah Fukumori <her@sorah.jp>
+Date: Sat, 8 Jan 2022 14:03:02 +0900
+Subject: [PATCH] test_readline#test_without_tty: Use EnvUtil.rubybin
+
+`ruby` is not always available in certain build environments and
+configure options. Choose appropriate command line using EnvUtil.
+---
+ test/readline/test_readline.rb | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/test/readline/test_readline.rb b/test/readline/test_readline.rb
+index be338c6c0d484e..be6e65f32ef22d 100644
+--- a/test/readline/test_readline.rb
++++ b/test/readline/test_readline.rb
+@@ -6,6 +6,8 @@
+ require "open3"
+ 
+ module BasetestReadline
++  RUBY = EnvUtil.rubybin
++
+   INPUTRC = "INPUTRC"
+   TERM = "TERM"
+   SAVED_ENV = %w[COLUMNS LINES]
+@@ -839,7 +841,7 @@ def test_without_tty
+       loader = "use_lib_reline"
+     end
+     if loader
+-      res, exit_status = Open3.capture2e("ruby -I#{__dir__} -Ilib -rhelper -e '#{loader}; Readline.readline(%{y or n?})'", stdin_data: "y\n")
++      res, exit_status = Open3.capture2e("#{RUBY} -I#{__dir__} -Ilib -rhelper -e '#{loader}; Readline.readline(%{y or n?})'", stdin_data: "y\n")
+       assert exit_status.success?, "It should work fine without tty, but it failed.\nError output:\n#{res}"
+     end
+   end

dev-lang/ruby/ruby-3.1.5.ebuild

@@ -71,6 +71,7 @@ PDEPEND="
 
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
+	eapply "${FILESDIR}"/"${SLOT}"/012*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/902*.patch
 
 	if use elibc_musl ; then

dev-lang/ruby/ruby-3.1.6-r1.ebuild

@@ -71,6 +71,7 @@ PDEPEND="
 
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
+	eapply "${FILESDIR}"/"${SLOT}"/012*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/902*.patch
 
 	if use elibc_musl ; then

dev-lang/ruby/ruby-3.1.6.ebuild

@@ -71,6 +71,7 @@ PDEPEND="
 
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
+	eapply "${FILESDIR}"/"${SLOT}"/012*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/902*.patch
 
 	if use elibc_musl ; then