52f21069d0
It uses import-from-derivation, which is a bad thing, because this causes hydra-evaluator to build Cassandra at evaluation time. $ nix-instantiate nixos/release.nix -A tests.cassandra.i686-linux --dry-run error: cannot read ‘/nix/store/c41blyjz6pfvk9fnvrn6miihq5w3j0l4-cassandra-2.0.16/conf/cassandra-env.sh’, since path ‘/nix/store/0j9ax4z8xhaz5lhrwl3bwj10waxs3hgy-cassandra-2.0.16.drv’ is not valid, at /home/eelco/Dev/nixpkgs/nixos/modules/services/databases/cassandra.nix:373:11 Also, the module is a mess (bad option descriptions, poor indentation, a gazillion options where a generic "config" option would suffice, it opens ports in the firewall, it sets vm.swappiness, ...).
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.