diff --git a/flake.lock b/flake.lock
index 2cef084..2107834 100644
--- a/flake.lock
+++ b/flake.lock
@@ -151,11 +151,11 @@
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
-        "lastModified": 1679167473,
-        "narHash": "sha256-OanhE3TWyIFaX4BZJ9AFh5CEUenhUqxtSbjTDQk8zJE=",
+        "lastModified": 1679700890,
+        "narHash": "sha256-u8GqQF/z57LaDf5x/O3IC5qtvwwhLtak+kWosp51F2w=",
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "6f502ad2c3936450763e0957fe0571941d70f6df",
+        "rev": "c9ff5bd489ca36a526e46440fec4d10a87988363",
         "type": "github"
       },
       "original": {
@@ -264,11 +264,11 @@
         "nixpkgs": "nixpkgs_6"
       },
       "locked": {
-        "lastModified": 1678914447,
-        "narHash": "sha256-cJRrpVmlDxIl1sEhxoIIo9cCtJ3wGAKWZkFacs3MrRk=",
+        "lastModified": 1679345933,
+        "narHash": "sha256-bZVohybatVr/rH5H57QYblsYOLC46Gn2mfHiSk/PNNs=",
         "owner": "fission-codes",
         "repo": "nix-overlay",
-        "rev": "05d1ea73a67535887274750a549b2eaee7af827c",
+        "rev": "589ff631a13de58b6a06b1d573eb72c135cc14a4",
         "type": "github"
       },
       "original": {
@@ -661,11 +661,11 @@
         "utils": "utils_3"
       },
       "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": {
@@ -970,11 +970,11 @@
     },
     "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": {
@@ -991,11 +991,11 @@
         ]
       },
       "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": {
@@ -1006,11 +1006,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1679075297,
-        "narHash": "sha256-8TwS7NPQWW9iPejBwWzmjLnK8bQhdOMPpsj3KPAL6x8=",
+        "lastModified": 1679598117,
+        "narHash": "sha256-Vs1f/7imI77OkMOQhO3xgx4jalN2Gx3D3C2wmnlpWJM=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "994584bb26ffa1deeaf56099601ef4bcc487273e",
+        "rev": "648021dcb2b65498eed3ea3a7339cdfc3bea4d82",
         "type": "github"
       },
       "original": {
@@ -1166,11 +1166,11 @@
     },
     "nixpkgs-stable_2": {
       "locked": {
-        "lastModified": 1679139072,
-        "narHash": "sha256-Gtw2Yj8DfETie3u7iHv1y5Wt+plGRmp6nTQ0EEfaPho=",
+        "lastModified": 1679163677,
+        "narHash": "sha256-VC0tc3EjJZFPXgucFQAYMIHce5nJWYR0kVCk4TVg6gg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "08ef7dc8334521605a5c8b7086cc248e74ee338b",
+        "rev": "c3912035d00ef755ab19394488b41feab95d2e40",
         "type": "github"
       },
       "original": {
@@ -1293,11 +1293,11 @@
     },
     "nixpkgs_8": {
       "locked": {
-        "lastModified": 1678987615,
-        "narHash": "sha256-lF4agoB7ysQGNHRXvOqxtSKIZrUZwClA85aASahQlYM=",
+        "lastModified": 1679734080,
+        "narHash": "sha256-z846xfGLlon6t9lqUzlNtBOmsgQLQIZvR6Lt2dImk1M=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "194c2aa446b2b059886bb68be15ef6736d5a8c31",
+        "rev": "dbf5322e93bcc6cfc52268367a8ad21c09d76fea",
         "type": "github"
       },
       "original": {
@@ -1392,11 +1392,11 @@
         "nixpkgs-stable": "nixpkgs-stable_2"
       },
       "locked": {
-        "lastModified": 1679152338,
-        "narHash": "sha256-gOVlCY84Ybbrzi3E8PEK/gOoxANYeU5f8Nm7uNPbjSo=",
+        "lastModified": 1679377997,
+        "narHash": "sha256-O8rmc/b/qgNgoHj2tL5+3Ovkj7A+Sok7gazRoWbpnqg=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "ac6df5bc51439401a0257db4205b3df66b76da0e",
+        "rev": "d8827a8368c307fbc6ed594c9a31d619e7360bed",
         "type": "github"
       },
       "original": {
diff --git a/hosts/epicurus/darwin-configuration.nix b/hosts/epicurus/darwin-configuration.nix
index 45be306..6bba187 100644
--- a/hosts/epicurus/darwin-configuration.nix
+++ b/hosts/epicurus/darwin-configuration.nix
@@ -19,17 +19,5 @@
   # Auto upgrade nix package and the daemon service.
   services.nix-daemon.enable = true;
 
-  users.users.walkah = {
-    home = "/Users/walkah";
-    shell = pkgs.zsh;
-  };
-
   services.lorri.enable = true;
-
-  programs = {
-    zsh = {
-      enable = true;
-      promptInit = "";
-    };
-  };
 }
diff --git a/hosts/heraclitus/darwin-configuration.nix b/hosts/heraclitus/darwin-configuration.nix
index 390fbcd..38ecb59 100644
--- a/hosts/heraclitus/darwin-configuration.nix
+++ b/hosts/heraclitus/darwin-configuration.nix
@@ -19,24 +19,12 @@
   # Auto upgrade nix package and the daemon service.
   services.nix-daemon.enable = true;
 
-  users.users.walkah = {
-    home = "/Users/walkah";
-    shell = pkgs.zsh;
-  };
-
   services.lorri.enable = true;
   services.ipfs = {
     enable = true;
     package = pkgs.kubo_carmirror;
   };
 
-  programs = {
-    zsh = {
-      enable = true;
-      promptInit = "";
-    };
-  };
-
   system = {
     defaults = {
       dock = {
diff --git a/hosts/plato/configuration.nix b/hosts/plato/configuration.nix
index 09cd13d..3700914 100644
--- a/hosts/plato/configuration.nix
+++ b/hosts/plato/configuration.nix
@@ -72,11 +72,6 @@
     };
   };
 
-  programs.mosh.enable = true;
-  programs.zsh = {
-    enable = true;
-    promptInit = "";
-  };
   programs.gnupg.agent = {
     enable = true;
     enableSSHSupport = true;
diff --git a/hosts/socrates/configuration.nix b/hosts/socrates/configuration.nix
index 3f0c4d8..cbb2d5c 100644
--- a/hosts/socrates/configuration.nix
+++ b/hosts/socrates/configuration.nix
@@ -44,9 +44,6 @@
   system.autoUpgrade.enable = false;
   environment.systemPackages = with pkgs; [ ipfs-migrator ];
 
-  programs.mosh.enable = true;
-  programs.zsh.enable = true;
-
   security.acme.acceptTerms = true;
   security.acme.defaults.email = "walkah@walkah.net";
 
diff --git a/modules/base/common.nix b/modules/base/common.nix
index a30d59b..f1fe84e 100644
--- a/modules/base/common.nix
+++ b/modules/base/common.nix
@@ -22,4 +22,11 @@ _:
       ];
     };
   };
+
+  programs = {
+    zsh = {
+      enable = true;
+      promptInit = "";
+    };
+  };
 }
diff --git a/modules/base/darwin.nix b/modules/base/darwin.nix
index 614e729..07be0a6 100644
--- a/modules/base/darwin.nix
+++ b/modules/base/darwin.nix
@@ -1,4 +1,4 @@
-_: {
+{ pkgs, ... }: {
 
   imports = [ ./common.nix ];
 
@@ -51,5 +51,10 @@ _: {
     };
   };
 
+  users.users.walkah = {
+    home = "/Users/walkah";
+    shell = pkgs.zsh;
+  };
+
   system.stateVersion = 4;
 }
diff --git a/modules/base/default.nix b/modules/base/default.nix
index e4025fd..ddc80fe 100644
--- a/modules/base/default.nix
+++ b/modules/base/default.nix
@@ -6,6 +6,7 @@
     inetutils
     vim
   ];
+
   nix = {
     gc = {
       persistent = true;
@@ -17,5 +18,9 @@
     };
   };
 
+  programs = {
+    mosh.enable = true;
+  };
+
   system.stateVersion = "23.05";
 }