diff --git a/flake.lock b/flake.lock
index 394efa7..66f46a5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -57,11 +57,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1679067095,
-        "narHash": "sha256-G2dJQURL/CCi+8RP6jNJG8VqgtzEMCA+6mNodd3VR6E=",
+        "lastModified": 1679758258,
+        "narHash": "sha256-/fsleSIKfnCCzrn4MIAEDTCKeCe+ZxXEPrKykAI5q08=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "3239e0b40f242f47bf6c0c37b2fd35ab3e76e370",
+        "rev": "d80bf24dab1c1abb3c36e6e28cd30d27599a9620",
         "type": "github"
       },
       "original": {
@@ -73,11 +73,11 @@
     },
     "nixlib": {
       "locked": {
-        "lastModified": 1677373009,
-        "narHash": "sha256-kxhz4QUP8tXa/yVSpEzDDZSEp9FvhzRqZzb+SeUaekw=",
+        "lastModified": 1679187309,
+        "narHash": "sha256-H8udmkg5wppL11d/05MMzOMryiYvc403axjDNZy1/TQ=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "c9d4f2476046c6a7a2ce3c2118c48455bf0272ea",
+        "rev": "44214417fe4595438b31bdb9469be92536a61455",
         "type": "github"
       },
       "original": {
@@ -94,11 +94,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1678351966,
-        "narHash": "sha256-tRFEU0lu3imZb3dtELBY+UbEhWXbb0xlBrsIlpICb+A=",
+        "lastModified": 1679464055,
+        "narHash": "sha256-RiZpwkbm1GeKRqrTtGGsEDieJyplMSRG1bQzOZgY378=",
         "owner": "nix-community",
         "repo": "nixos-generators",
-        "rev": "0c043999b16caba6fb571af2d228775729829943",
+        "rev": "d5cd198c80ee62a801a078ad991c99c0175971cf",
         "type": "github"
       },
       "original": {
@@ -109,11 +109,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1679081381,
-        "narHash": "sha256-n4+SbrVohxbgbmOTkodfxc3d8W38OfKowD6YNA8j27o=",
+        "lastModified": 1679705136,
+        "narHash": "sha256-MDlZUR7wJ3PlPtqwwoGQr3euNOe0vdSSteVVOef7tBY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b573a7f69484a7d213680abb70b4f95bdc28eee5",
+        "rev": "8f40f2f90b9c9032d1b824442cfbbe0dbabd0dbd",
         "type": "github"
       },
       "original": {
diff --git a/modules/tools/zsh/default.nix b/modules/tools/zsh/default.nix
index ca12eeb..cf4d881 100644
--- a/modules/tools/zsh/default.nix
+++ b/modules/tools/zsh/default.nix
@@ -13,6 +13,10 @@ in {
   };
 
   config = mkIf cfg.enable {
+    # Already set in home-manager below, but without this building fails with
+    # an assertion error that suggests setting this
+    programs.zsh.enable = true;
+
     aa.home.extraOptions = {
       programs.zsh = {
         enable = true;
diff --git a/systems/x86_64-linux/carbon/hardware-configuration-zfs.nix b/systems/x86_64-linux/carbon/hardware-configuration-zfs.nix
index c23c901..835b98f 100644
--- a/systems/x86_64-linux/carbon/hardware-configuration-zfs.nix
+++ b/systems/x86_64-linux/carbon/hardware-configuration-zfs.nix
@@ -109,6 +109,4 @@
 
   powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
   hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
-  # high-resolution display
-  hardware.video.hidpi.enable = lib.mkDefault true;
 }