diff --git a/default.nix b/default.nix
index 0d14a85..dfa268e 100644
--- a/default.nix
+++ b/default.nix
@@ -31,7 +31,7 @@ let
     # l3pp = callPackage ./l3pp { };
     # mathsat = callPackage ./mathsat { };
 
-    factor-lang = callPackage ./factor-lang/scope.nix { };
+    factor-lang = callPackage ./factor-lang/scope.nix { stdenv = prev.clangStdenv; };
 
     foxitreader = callPackage ./foxitreader.nix { openssl = prev.openssl_1_0_2; };
 
diff --git a/factor-lang/default.nix b/factor-lang/default.nix
index 9de088f..aa8e503 100644
--- a/factor-lang/default.nix
+++ b/factor-lang/default.nix
@@ -75,34 +75,14 @@ stdenv.mkDerivation rec {
 
   configurePhase = "true";
 
+  LD_LIBRARY_PATH = "/run/opengl-driver/lib:${runtimeLibPath}";
   buildPhase = ''
-    make linux-x86-64
-
+    patchShebangs ./build.sh
     # Factor uses XDG_CACHE_HOME for cache during compilation.
-    # We can't have that. So set it to $TMPDIR/.cache
+    # We can't have that. So, set it to $TMPDIR/.cache
     export XDG_CACHE_HOME=$TMPDIR/.cache && mkdir -p $XDG_CACHE_HOME
-
-    # The released image has library path info embedded, so we
-    # first have to recreate the boot image with Nix paths, and
-    # then use it to build the Nix release image.
-    cp boot.unix-x86.64.image factor.image
-
-    # Expose libraries in LD_LIBRARY_PATH for factor
-    export LD_LIBRARY_PATH=${lib.makeLibraryPath runtimeLibs}:$LD_LIBRARY_PATH
-
-    echo "=== Building first full image from boot image..."
-
-    # build full factor image from boot image, saving the state for the next call
-    ./factor  -script -e='"unix-x86.64" USING: system bootstrap.image memory ; make-image save 0 exit'
-
-    echo "=== Building new boot image..."
-    # make a new bootstrap image
-    ./factor  -script -e='"unix-x86.64" USING: system bootstrap.image ; make-image 0 exit'
-
-    echo "=== Building final full image..."
-    # rebuild final full factor image to include all patched sources
-    ./factor -i=boot.unix-x86.64.image
-
+    ./build.sh compile
+    ./build.sh bootstrap
   '';
 
   doCheck = true;
diff --git a/factor-lang/scope.nix b/factor-lang/scope.nix
index b1fe0b0..8c0d8a0 100644
--- a/factor-lang/scope.nix
+++ b/factor-lang/scope.nix
@@ -6,7 +6,7 @@ let
   let callPackage = pkgs.newScope self ;
   in rec {
     recurseForDerivations = true;
-    interpreter = callPackage ./default.nix { inherit (gnome2) gtkglext; };
+    interpreter = callPackage ./default.nix { inherit (gnome2) gtkglext; inherit stdenv; };
 
     # Convenience access for using the returned attribute the same way as the interpreter derivation
     withLibs = self.interpreter.withLibs;