diff --git a/pkgs/by-name/he/hexagon-sdk/package.nix b/pkgs/by-name/he/hexagon-sdk/package.nix
index 4f09a80..3481ddd 100644
--- a/pkgs/by-name/he/hexagon-sdk/package.nix
+++ b/pkgs/by-name/he/hexagon-sdk/package.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  pkgs,
   stdenvNoCC,
   stdenv,
   p7zip,
@@ -14,24 +15,68 @@ let
     url = "https://github.com/snapdragon-toolchain/hexagon-sdk/releases/download/v6.4.0.2/hexagon-sdk-v6.4.0.2-amd64-lnx.tar.xz";
     sha256 = "0qadmn84sdqbqh3s837s0amdmln3akb1b01k8x5nha0lkw6a3jwc";
   };
+  gmp_override = pkgs.gmp.overrideAttrs (
+    final: prev: {
+      postInstall =
+        (prev.postInstall or "")
+        + "
+				ls
+				cd $out
+				cd lib
+				ls
+			rm libgmp.so.10
+			cp libgmp.so.10.5.0 libgmp.so.10
+			cp libgmp.so.10.5.0 $out/libgmp.so.10
+			";
+    }
+  );
+  libs = [
+    pkgs.stdenv.cc.cc.lib
+    pkgs.libc
+    pkgs.libcxx
+    pkgs.gmp
+    pkgs.libz
+    pkgs.libgccjit
+    # pkgs.zlib
+    # pkgs.ncurses
+  ];
+
+  # we get Nixpkgs to create the library paths for us, so we don't have to wrangle them by hand
+  libPath = pkgs.lib.makeLibraryPath libs;
 in
 stdenv.mkDerivation rec {
   pname = "hexagon-sdk";
   inherit version src;
 
-  dontUnpack = true;
-  dontBuild = true;
+  # dontUnpack = true;
+  # dontBuild = true;
+
+  nativeBuildInputs = [
+  ];
+  buildInputs = [ pkgs.patchelf ];
+  runtimeDependencies = with pkgs; [ gmpxx ];
 
   buildPhase = ''
     runHook preBuild
+    						# cp $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/lib/libLW.so.3 $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/bin/
     runHook postBuild
   '';
 
   installPhase = ''
-            runHook preInstall
-    				mkdir $out
-        		cp -r ${src} $out/opt
-            runHook postInstall
+                    runHook preInstall
+                    mkdir $out
+                    cp -r ${src} $out/opt
+                    runHook postInstall
+
+                    chmod +w $out/opt/ipc/fastrpc/qaic/bin/qaic
+                		chmod +w $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/bin/hexagon-clang
+                		chmod +w $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/bin/hexagon-link
+                    patchelf $out/opt/ipc/fastrpc/qaic/bin/qaic --set-interpreter ${pkgs.stdenv.cc.bintools.dynamicLinker} --set-rpath ${libPath}
+                    patchelf $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/bin/hexagon-clang --set-interpreter ${pkgs.stdenv.cc.bintools.dynamicLinker} --set-rpath ${libPath}
+        						lib=${libPath}
+        						lib=$lib:$out/opt/tools/HEXAGON_Tools/19.0.04/Tools/lib
+    								echo $lib
+                    patchelf $out/opt/tools/HEXAGON_Tools/19.0.04/Tools/bin/hexagon-link --set-interpreter ${pkgs.stdenv.cc.bintools.dynamicLinker} --set-rpath $lib
   '';
 
   meta = {