* nix-push generated invalid (old-style) slices.

* nar.sh needs a path.

corepkgs/nar/nar.sh.in

@@ -1,5 +1,7 @@
 #! /bin/sh
 
+export PATH=/bin:/usr/bin
+
 echo "packing $path into $out..."
 mkdir $out || exit 1
 tmp=$out/tmp

scripts/nix-push.in

@@ -52,7 +52,7 @@ foreach my $id (@ARGV) {
         # Construct a Fix expression that creates a Nix archive.
         my $fixexpr = 
           "App(IncludeFix(\"nar/nar.fix\"), " .
-          "[ (\"path\", Slice([\"$pathid\"], [(\"$path\", \"$pathid\", [])]))" .
+          "[ (\"path\", Slice([\"$path\"], [(\"$path\", \"$pathid\", [])]))" .
           "])";
 	
 	print FIX "," unless ($first);