Switch to zsh.

nix/configuration/configuration.nix

@@ -22,6 +22,7 @@
     ./zfs.nix
     ./network.nix
     ./roles/firewall
+    ./roles/zsh
     ./roles/graphics
     ./roles/sound
     ./roles/sway

nix/configuration/roles/zsh/default.nix

@@ -0,0 +1,17 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  environment.systemPackages = with pkgs; [
+    zsh
+  ];
+
+  users.users.talexander.shell = pkgs.zsh;
+  environment.shells = with pkgs; [ zsh ];
+}