add iosevka font for xmobar

[leana8959]

You are using Iosevka font for xmobar but it wasn't in the home-manager closure. This fixes that. =D

Also it seems like xft is dropped so I'm surprised that it still worked.
https://codeberg.org/xmobar/xmobar/src/branch/master/changelog.md#version-0-45-october-2022

---

Tested with the following patch and command.

nix build .#nixosConfigurations.hepao.config.system.build.vm
result/bin/run-hepao-vm

diff --git a/flake.nix b/flake.nix
index 98fd2e8..a7bcdbd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -128,6 +128,18 @@
           [
             hardware.framework-12th-gen-intel
             hosts.hepao
+
+            {
+              nixpkgs.config.allowUnfree = true;
+            }
+            (inputs.home-manager + "/nixos")
+            { home-manager.users.del = {
+                imports = [ ./homes/del ];
+                home.stateVersion = stateVersion;
+                nixpkgs.config.allowUnfree = true;
+              };
+            }
+
           ]
           ++ modules.workstation;
       };
diff --git a/hosts/_/workstation.nix b/hosts/_/workstation.nix
index da6d63d..44dd695 100644
--- a/hosts/_/workstation.nix
+++ b/hosts/_/workstation.nix
@@ -11,7 +11,7 @@
   services = {
     avahi.enable = true;
     btrfs.autoScrub = {
-      enable = true;
+      # enable = true;
       interval = "weekly";
     };