diff --git a/nixos/hardware-configuration.nix b/nixos/hardware-configuration.nix
index 5b0fc8f..a745282 100644
--- a/nixos/hardware-configuration.nix
+++ b/nixos/hardware-configuration.nix
@@ -24,8 +24,6 @@ in
   boot.initrd.luks =
     {
       devices =
-        # allow discards on all devices
-        builtins.mapAttrs (name: val: val // {allowDiscards = true;})
         {
           "system".device = "/dev/disk/by-uuid/85154131-b2a8-4ef5-9d74-47429cb267ef";
           "cryptswap".device = "/dev/disk/by-uuid/ac586df6-6332-4809-beb1-f51906a2adaa";
diff --git a/nixos/packages.nix b/nixos/packages.nix
index c2ccaf2..97ebe04 100644
--- a/nixos/packages.nix
+++ b/nixos/packages.nix
@@ -21,6 +21,8 @@
     strace
     ltrace
     valgrind
+    lzop
+    p7zip
     testdisk
     rsync
     pv