ruby_2_3: remove

This has been EOL since December. We shouldn't still be facilitating
its use.

Fixes #67977.

pkgs/development/interpreters/ruby/default.nix

@@ -211,14 +211,6 @@ let
     ) args; in self;
 
 in {
-  ruby_2_3 = generic {
-    version = rubyVersion "2" "3" "8" "";
-    sha256 = {
-      src = "1gwsqmrhpx1wanrfvrsj3j76rv888zh7jag2si2r14qf8ihns0dm";
-      git = "0158fg1sx6l6applbq0831kl8kzx5jacfl9lfg0shfzicmjlys3f";
-    };
-  };
-
   ruby_2_4 = generic {
     version = rubyVersion "2" "4" "7" "";
     sha256 = {

pkgs/top-level/aliases.nix

@@ -303,8 +303,9 @@ mapAliases ({
   rssglx = rss-glx; #added 2015-03-25
   ruby_2_0_0 = throw "deprecated 2018-0213: use a newer version of ruby";
   ruby_2_1_0 = throw "deprecated 2018-0213: use a newer version of ruby";
-  ruby_2_2_9 = throw "deprecated 2018-0213: use ruby_2_2 instead";
-  ruby_2_3_6 = throw "deprecated 2018-0213: use ruby_2_3 instead";
+  ruby_2_2_9 = throw "deprecated 2018-0213: use a newer version of ruby";
+  ruby_2_3_6 = throw "deprecated 2018-0213: use a newer version of ruby";
+  ruby_2_3 = throw "deprecated 2019-09-06: use a newer version of ruby";
   ruby_2_4_3 = throw "deprecated 2018-0213: use ruby_2_4 instead";
   ruby_2_5_0 = throw "deprecated 2018-0213: use ruby_2_5 instead";
   rubygems = throw "deprecated 2016-03-02: rubygems is now bundled with ruby";

pkgs/top-level/all-packages.nix

@@ -8932,14 +8932,12 @@ in
     inherit (darwin) libiconv libobjc libunwind;
     inherit (darwin.apple_sdk.frameworks) Foundation;
   })
-    ruby_2_3
     ruby_2_4
     ruby_2_5
     ruby_2_6;
 
   ruby = ruby_2_6;
 
-  rubyPackages_2_3 = recurseIntoAttrs ruby_2_3.gems;
   rubyPackages_2_4 = recurseIntoAttrs ruby_2_4.gems;
   rubyPackages_2_5 = recurseIntoAttrs ruby_2_5.gems;
   rubyPackages_2_6 = recurseIntoAttrs ruby_2_6.gems;