1 files changed, 18 insertions, 0 deletions
diff --git a/pkgs/development/tools/parsing/flex/flex-new.nix b/pkgs/development/tools/parsing/flex/flex-new.nix
new file mode 100644
index 0000000000000..fc5d880a02762
--- /dev/null
+++ b/pkgs/development/tools/parsing/flex/flex-new.nix
@@ -0,0 +1,18 @@
+# !!! this should be moved to default.nix eventually (but I delay
+# doing that since it would cause a rebuild of lots of stuff).
+
+{stdenv, fetchurl, yacc}:
+
+assert !isNull yacc;
+
+derivation {
+  name = "flex-2.5.31";
+  system = stdenv.system;
+  builder = ./builder-new.sh;
+  src = fetchurl {
+    url = http://heanet.dl.sourceforge.net/sourceforge/lex/flex-2.5.31.tar.bz2;
+    md5 = "363dcc4afc917dc51306eb9d3de0152f";
+  };
+  stdenv = stdenv;
+  yacc = yacc;
+}