diff --git a/pkgs/misc/drivers/gutenprint/bin.nix b/pkgs/misc/drivers/gutenprint/bin.nix
index 58b77cb91071..891421d3312c 100644
--- a/pkgs/misc/drivers/gutenprint/bin.nix
+++ b/pkgs/misc/drivers/gutenprint/bin.nix
@@ -34,7 +34,9 @@ stdenv.mkDerivation {
 
   buildInputs = [ rpm cpio ];
 
-  phases = "buildPhase";
+  dontUnpack = true;
+  dontInstall = true;
+  dontFixup = true;
 
   libPath = lib.makeLibraryPath [ stdenv.cc.cc zlib ];
 
diff --git a/pkgs/misc/drivers/postscript-lexmark/default.nix b/pkgs/misc/drivers/postscript-lexmark/default.nix
index ebc6439dd5ca..64a38239a9b0 100644
--- a/pkgs/misc/drivers/postscript-lexmark/default.nix
+++ b/pkgs/misc/drivers/postscript-lexmark/default.nix
@@ -13,8 +13,6 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ rpmextract ];
 
-  phases = [ "unpackPhase" "installPhase"];
-
   sourceRoot = ".";
 
   unpackPhase = ''
diff --git a/pkgs/misc/drivers/sundtek/default.nix b/pkgs/misc/drivers/sundtek/default.nix
index d52f9dd7cde3..d81a278ec135 100644
--- a/pkgs/misc/drivers/sundtek/default.nix
+++ b/pkgs/misc/drivers/sundtek/default.nix
@@ -10,18 +10,19 @@ let
     else
     if isi686 then "32bit"
     else throw "${system} not considered in build derivation. Might still be supported.";
+  sha256 = with stdenv;
+    if isx86_64 then "1jfsng5n3phw5rqpkid9m5j7m7zgj5bifh7swvba7f97y6imdaax"
+    else "15y6r5w306pcq4g1rn9f7vf70f3a7qhq237ngaf0wxh2nr0aamxp";
 
 in
   stdenv.mkDerivation {
     src = fetchurl {
       url = "http://www.sundtek.de/media/netinst/${platform}/installer.tar.gz";
-      sha256 = "15y6r5w306pcq4g1rn9f7vf70f3a7qhq237ngaf0wxh2nr0aamxp";
+      sha256 = sha256;
     };
     pname = "sundtek";
     inherit version;
 
-    phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-
     sourceRoot = ".";
 
     installPhase = ''