diff --git a/pkgs/development/compilers/adobe-flex-sdk/default.nix b/pkgs/development/compilers/adobe-flex-sdk/default.nix
new file mode 100644
index 000000000000..7beea35a78a6
--- /dev/null
+++ b/pkgs/development/compilers/adobe-flex-sdk/default.nix
@@ -0,0 +1,38 @@
+args: with args;
+stdenv.mkDerivation rec {
+  name = "adobe-flex-sdk-3.3.0.4852_mpl";
+
+  src = fetchurl {
+    url = http://flexorg.wip3.adobe.com/flexsdk/3.3.0.4852/flex_sdk_3.3.0.4852_mpl.zip;
+    sha256 = "1gsm774afc7zwv3hyib5n6fpdbnd0dh6z7r2amjf38fm96jw7a99";
+  };
+
+  phases="installPhase";
+
+  buildInputs = [ unzip ];
+
+  # Why do shell scripts have \r\n ??
+  # moving to /opt because jdk has lib/xercesImpl.jar as well
+  installPhase = ''
+    unzip ${src}
+    t=$out/opt/flex-sdk
+    ensureDir $t $out/bin
+    mv * $t
+    sed 's/
$//' -i $t/bin/mxmlc
+    rm $t/bin/*.exe
+    for i in $t/bin/mxmlc; do
+      b="$(basename "$i")";
+    cat > "$out/bin/$b" << EOF
+    #!/bin/sh
+    exec $t/bin/$b "\$@"
+    EOF
+      chmod +x $out/bin/$b $t/bin/$b
+    done
+  '';
+
+  meta = { 
+      description = "flex sdk flash / action script developement kit";
+      homepage = "http://www.adobe.com/support/documentation/en/flex/3/releasenotes_flex3_sdk.html#installation";
+      license = "MPLv1.1"; #  Mozilla Public License Version 1.1
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 15dcb40c1760..0364f9f3eb52 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1521,6 +1521,10 @@ let
     inherit fetchsvn stdenv coreutils m4 libtool ghc uulib uuagc llvm;
   };
 
+  adobeFlexSDK33 = import ../development/compilers/adobe-flex-sdk {
+    inherit fetchurl stdenv unzip jre;
+  };
+
   fpc = import ../development/compilers/fpc {
     inherit fetchurl stdenv gawk system;
   };