1 files changed, 9 insertions, 0 deletions
diff --git a/pkgs/development/interpreters/ruby/gemconfig/default.nix b/pkgs/development/interpreters/ruby/gemconfig/default.nix
index 787c3be54e35..dd4ae725095d 100644
--- a/pkgs/development/interpreters/ruby/gemconfig/default.nix
+++ b/pkgs/development/interpreters/ruby/gemconfig/default.nix
@@ -21,6 +21,7 @@
 , libiconv, postgresql, v8_3_16_14, clang, sqlite, zlib, imagemagick
 , pkgconfig , ncurses, xapian, gpgme, utillinux, fetchpatch, tzdata, icu, libffi
 , cmake, libssh2, openssl, mysql, darwin, git, perl, gecode_3, curl
+, libmsgpack
 }:
 
 let
@@ -40,6 +41,10 @@ in
     '';
   };
 
+  eventmachine = attrs: {
+    buildInputs = [ openssl ];
+  };
+
   ffi = attrs: {
     buildInputs = [ libffi pkgconfig ];
   };
@@ -56,6 +61,10 @@ in
     buildFlags = [ "--with-system-v8=true" ];
   };
 
+  msgpack = attrs: {
+    buildInputs = [ libmsgpack ];
+  };
+
   mysql2 = attrs: {
     buildInputs = [ mysql.lib zlib openssl ];
   };