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-rw-r--r--pkgs/development/ruby-modules/gem-config/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 02fe9f50558..e115b2c679d 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -211,7 +211,7 @@ in
     buildInputs = [ curl ];
   };
 
-  tzinfo = attrs: {
+  tzinfo = attrs: lib.optionalAttrs (lib.versionAtLeast attrs.version "1.0") {
     dontBuild = false;
     postPatch = ''
       substituteInPlace lib/tzinfo/zoneinfo_data_source.rb \