* "ensureDir" -> "mkdir -p". "ensureDir" is a rather pointless

function, so obsolete it.

svn path=/nixpkgs/branches/stdenv-updates/; revision=31644

pkgs/build-support/release/debian-build.nix

@@ -30,7 +30,7 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
 
     # !!! cut&paste from rpm-build.nix
     postHook = ''
-      ensureDir $out/nix-support
+      mkdir -p $out/nix-support
       cat "$diskImage"/nix-support/full-name > $out/nix-support/full-name
 
       # If `src' is the result of a call to `makeSourceTarball', then it
@@ -67,7 +67,7 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
         --provides="${concatStringsSep "," debProvides}" \
         make install
 
-      ensureDir $out/debs
+      mkdir -p $out/debs
       find . -name "*.deb" -exec cp {} $out/debs \;
 
       [ "$(echo $out/debs/*.deb)" != "" ]