ruby_2_4: remove

According to https://endoflife.software/programming-languages/server-side-scripting/ruby
ruby 2.4 will go end-of-life in march, where the new release of nixpkgs
will be cut. We won't be able to support it for security updates.

Remove all references to ruby_2_4 and add ruby_2_7 instead where
missing.

Mark packages that depend on ruby 2.4 as broken:
* chefdk
* sonic-pi

pkgs/applications/audio/sonic-pi/default.nix

@@ -105,5 +105,7 @@ mkDerivation rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ Phlogistique kamilchm ];
     platforms = lib.platforms.linux;
+    # sonic-pi depends on ruby 2.4 which we don't support anymore
+    broken = true;
   };
 }

pkgs/development/interpreters/ruby/default.nix

@@ -26,7 +26,6 @@ let
   generic = { version, sha256 }: let
     ver = version;
     tag = ver.gitTag;
-    atLeast25 = lib.versionAtLeast ver.majMin "2.5";
     atLeast27 = lib.versionAtLeast ver.majMin "2.7";
     baseruby = self.override {
       useRailsExpress = false;
@@ -77,14 +76,13 @@ let
         nativeBuildInputs = [ autoreconfHook bison ]
           ++ (op docSupport groff)
           ++ op (stdenv.buildPlatform != stdenv.hostPlatform) buildPackages.ruby;
-        buildInputs =
-             (op fiddleSupport libffi)
+        buildInputs = [ autoconf ]
+          ++ (op fiddleSupport libffi)
           ++ (ops cursesSupport [ ncurses readline ])
           ++ (op zlibSupport zlib)
           ++ (op opensslSupport openssl)
           ++ (op gdbmSupport gdbm)
           ++ (op yamlSupport libyaml)
-          ++ (op atLeast25 autoconf)
           # Looks like ruby fails to build on darwin without readline even if curses
           # support is not enabled, so add readline to the build inputs if curses
           # support is disabled (if it's enabled, we already have it) and we're
@@ -106,15 +104,10 @@ let
           cp -r ${rubygems}/test/rubygems $sourceRoot/test
         '';
 
-        postPatch = if atLeast25 then ''
+        postPatch = ''
           sed -i configure.ac -e '/config.guess/d'
           cp --remove-destination ${config}/config.guess tool/
           cp --remove-destination ${config}/config.sub tool/
-        ''
-        else opString useRailsExpress ''
-          sed -i configure.in -e '/config.guess/d'
-          cp ${config}/config.guess tool/
-          cp ${config}/config.sub tool/
         '';
 
         # Force the revision.h generation. Somehow `revision.tmp` is an empty
@@ -230,14 +223,6 @@ let
     ) args; in self;
 
 in {
-  ruby_2_4 = generic {
-    version = rubyVersion "2" "4" "9" "";
-    sha256 = {
-      src = "1bn6n5b920qy3lsx99jr8495jkc3sg89swgb96d5fgd579g6p6zr";
-      git = "066kb1iki7mx7qkm10xhj5b6v8s47wg68v43l3nc36y2hyim1w2c";
-    };
-  };
-
   ruby_2_5 = generic {
     version = rubyVersion "2" "5" "7" "";
     sha256 = {

pkgs/development/ruby-modules/with-packages/test.nix

@@ -6,7 +6,6 @@ let
   stdenv = pkgs.stdenv;
 
   rubyVersions = with pkgs; [
-    ruby_2_4
     ruby_2_5
     ruby_2_6
     ruby_2_7

pkgs/development/tools/chefdk/default.nix

@@ -1,9 +1,9 @@
-{ lib, bundlerEnv, bundlerUpdateScript, ruby_2_4, perl, autoconf }:
+{ lib, bundlerEnv, bundlerUpdateScript, ruby, perl, autoconf }:
 
 bundlerEnv {
   name = "chef-dk-2.4.17";
 
-  ruby = ruby_2_4;
+  inherit ruby;
   gemdir = ./.;
 
   buildInputs = [ perl autoconf ];
@@ -16,5 +16,7 @@ bundlerEnv {
     license     = licenses.asl20;
     maintainers = with maintainers; [ offline nicknovitski ];
     platforms   = platforms.unix;
+    # chefdk depends on ruby 2.4 which we don't support anymore
+    broken      = true;
   };
 }

pkgs/servers/http/unit/default.nix

@@ -6,7 +6,6 @@
 , withPerl528 ? false, perl528
 , withPerl530 ? true, perl530
 , withPerldevel ? false, perldevel
-, withRuby_2_4 ? false, ruby_2_4
 , withRuby_2_5 ? false, ruby_2_5
 , withRuby_2_6 ? true, ruby_2_6
 , withRuby_2_7 ? true, ruby_2_7
@@ -43,7 +42,6 @@ stdenv.mkDerivation rec {
     ++ optional withPerl528 perl528
     ++ optional withPerl530 perl530
     ++ optional withPerldevel perldevel
-    ++ optional withRuby_2_4 ruby_2_4
     ++ optional withRuby_2_5 ruby_2_5
     ++ optional withRuby_2_6 ruby_2_6
     ++ optional withRuby_2_7 ruby_2_7
@@ -66,7 +64,6 @@ stdenv.mkDerivation rec {
     ${optionalString withPerl528    "./configure perl   --module=perl528  --perl=${perl528}/bin/perl"}
     ${optionalString withPerl530    "./configure perl   --module=perl530  --perl=${perl530}/bin/perl"}
     ${optionalString withPerldevel  "./configure perl   --module=perldev  --perl=${perldevel}/bin/perl"}
-    ${optionalString withRuby_2_4   "./configure ruby   --module=ruby24   --ruby=${ruby_2_4}/bin/ruby"}
     ${optionalString withRuby_2_5   "./configure ruby   --module=ruby25   --ruby=${ruby_2_5}/bin/ruby"}
     ${optionalString withRuby_2_6   "./configure ruby   --module=ruby26   --ruby=${ruby_2_6}/bin/ruby"}
     ${optionalString withRuby_2_7   "./configure ruby   --module=ruby27   --ruby=${ruby_2_7}/bin/ruby"}

pkgs/top-level/aliases.nix

@@ -378,8 +378,10 @@ mapAliases ({
   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";
+  ruby_2_4_3 = throw "deprecated 2018-0213: use a newer version of ruby";
+  ruby_2_4 = throw "deprecated 2019-12: use a newer version of ruby";
+  ruby_2_5_0 = throw "deprecated 2018-0213: use a newer version of ruby";
+  rubyPackages_2_4 = throw "deprecated 2019-12: use a newer version of rubyPackages instead";
   rubygems = throw "deprecated 2016-03-02: rubygems is now bundled with ruby";
   rxvt_unicode_with-plugins = rxvt_unicode-with-plugins; # added 2015-04-02
   s6Dns = s6-dns; # added 2018-07-23

pkgs/top-level/all-packages.nix

@@ -9424,7 +9424,6 @@ in
     inherit (darwin) libiconv libobjc libunwind;
     inherit (darwin.apple_sdk.frameworks) Foundation;
   })
-    ruby_2_4
     ruby_2_5
     ruby_2_6
     ruby_2_7;
@@ -9445,7 +9444,6 @@ in
   ruby = ruby_2_6;
   rubyPackages = rubyPackages_2_6;
 
-  rubyPackages_2_4 = recurseIntoAttrs ruby_2_4.gems;
   rubyPackages_2_5 = recurseIntoAttrs ruby_2_5.gems;
   rubyPackages_2_6 = recurseIntoAttrs ruby_2_6.gems;
   rubyPackages_2_7 = recurseIntoAttrs ruby_2_7.gems;
@@ -21363,9 +21361,7 @@ in
 
   wavebox = callPackage ../applications/networking/instant-messengers/wavebox { };
 
-  sonic-pi = libsForQt5.callPackage ../applications/audio/sonic-pi {
-    ruby = ruby_2_4;  # sonic-pi build breaks with ruby 2.5 and 2.6
-  };
+  sonic-pi = libsForQt5.callPackage ../applications/audio/sonic-pi { };
 
   st = callPackage ../applications/misc/st {
     conf = config.st.conf or null;