Use /var/log/sa for statedir of sysstat, in stead of $out/var/lib/sa. This path cannot be overriden at runtime, so choosing a 'sane' default.

pkgs/os-specific/linux/sysstat/default.nix

@@ -13,9 +13,11 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     export PATH_CP=$(type -tp cp)
     export PATH_CHKCONFIG=/no-such-program
-    makeFlagsArray=(SA_DIR=$out/var/log/sa SYSCONFIG_DIR=$out/etc CHOWN=true IGNORE_MAN_GROUP=y)
+    makeFlagsArray=(SA_DIR=/var/log/sa SYSCONFIG_DIR=$out/etc CHOWN=true IGNORE_MAN_GROUP=y)
   '';
 
+  patches = [ ./no-install-statedir.patch ];
+
   meta = {
     homepage = http://sebastien.godard.pagesperso-orange.fr/;
     description = "A collection of performance monitoring tools for Linux (such as sar, iostat and pidstat)";