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-rw-r--r--pkgs/development/ruby-modules/gem-config/default.nix7
1 files changed, 7 insertions, 0 deletions
diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 4f70f9af751..105b463f827 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -658,6 +658,13 @@ in
       "--with-cflags=-I${ncurses.dev}/include"
       "--with-ldflags=-L${ncurses.out}/lib"
     ];
+    dontBuild = false;
+    postPatch = ''
+      substituteInPlace extconf.rb --replace 'rubyio.h' 'ruby/io.h'
+      substituteInPlace terminfo.c \
+        --replace 'rubyio.h' 'ruby/io.h' \
+        --replace 'rb_cData' 'rb_cObject'
+    '';
   };
 
   ruby-vips = attrs: {