try to fix everything

flake.nix

@@ -210,7 +210,6 @@
                     {
                       nixpkgs.pkgs = pkgsFor "aarch64-linux";
                     }
-                    disko.nixosModules.disko
                     inputs.nixos-hardware.nixosModules.raspberry-pi-3
                     ./hosts/pancake
                     ./modules

hosts/common.nix

@@ -9,8 +9,6 @@
         "root"
         "@wheel"
       ];
-      trusted-public-keys = [ "central:uWhjva6m6dhC2hqNisjn2hXGvdGBs19vPkA1dPEuwFg=" ];
-      substituters = [ "https://cache.cything.io/central" ];
     };
     channel.enable = false;
     optimise = {

hosts/pancake/default.nix

@@ -8,8 +8,8 @@
     (modulesPath + "/installer/scan/not-detected.nix")
     (modulesPath + "/profiles/qemu-guest.nix")
     ../common.nix
-    ./disk-config.nix
     ./hardware-configuration.nix
+    ../zsh.nix
   ];
 
   services.openssh = {
@@ -31,7 +31,6 @@
 
   # network stuff
   networking.hostName = "pancake";
-  networking.networkmanager.enable = true;
   networking.firewall = {
     enable = true;
     allowedTCPPorts = [

hosts/pancake/disk-config.nix

@@ -1,33 +0,0 @@
-{
-  disko.devices = {
-    disk = {
-      main = {
-        device = "/dev/mmcblk0";
-        type = "disk";
-        content = {
-          type = "gpt";
-          partitions = {
-            ESP = {
-              type = "EF00";
-              size = "500M";
-              content = {
-                type = "filesystem";
-                format = "vfat";
-                mountpoint = "/boot";
-                mountOptions = [ "umask=0077" ];
-              };
-            };
-            root = {
-              size = "100%";
-              content = {
-                type = "filesystem";
-                format = "ext4";
-                mountpoint = "/";
-              };
-            };
-          };
-        };
-      };
-    };
-  };
-}