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

function, so obsolete it.

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

pkgs/applications/science/logic/picosat/default.nix

@@ -22,13 +22,13 @@ stdenv.mkDerivation rec {
   '';
 
   installPhase = ''
-   ensureDir "$out"/bin
+   mkdir -p "$out"/bin
    cp picomus "$out"/bin
    cp picosat "$out"/bin
-   ensureDir "$out"/lib
+   mkdir -p "$out"/lib
    cp libpicosat.a "$out"/lib
    cp libpicosat.so "$out"/lib
-   ensureDir "$out"/include/picosat
+   mkdir -p "$out"/include/picosat
    cp picosat.h "$out"/include/picosat
   '';