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-rw-r--r--pkgs/development/compilers/ecl/default.nix6
1 files changed, 4 insertions, 2 deletions
diff --git a/pkgs/development/compilers/ecl/default.nix b/pkgs/development/compilers/ecl/default.nix
index 7692811e8d6a3..75e9a6acbaca5 100644
--- a/pkgs/development/compilers/ecl/default.nix
+++ b/pkgs/development/compilers/ecl/default.nix
@@ -14,8 +14,10 @@ rec {
   inherit buildInputs propagatedBuildInputs;
   configureFlags = [
     "--enable-threads"
-    "--enable-unicode"
-    ];
+    ]
+    ++
+    (a.lib.optional (! a.noUnicode) "--enable-unicode")
+    ;
 
   /* doConfigure should be removed if not needed */
   phaseNames = ["doConfigure" "doMakeInstall" "fixEclConfig"];