fixes so i can install

configuration.nix

@@ -84,4 +84,7 @@
 
   # unfree as in unfreedom
   nixpkgs.config.allowUnfree = true;
+  services.xserver.displayManager.defaultSession = lib.mkForce "plasma";
+  #services.xserver.displayManager.sddm.enable = lib.mkForce false;
+
 }

disk-config.nix

@@ -1,7 +1,7 @@
 { lib, ... }:
 {
   disko.devices = {
-    disk.disk1 = {
+    disk.disk0 = {
       device = "/dev/disk/by-id/ata-SAMSUNG_MZ7TE512HMHP-000L1_S1GJNSAG201058";
       type = "disk";
       content = {
@@ -24,7 +24,7 @@
           };
           luks = {
             name = "root";
-            size = "70%";
+            size = "300G";
             content = {
               type = "luks";
               name = "nixos-encrypted";
@@ -35,7 +35,7 @@
               };
               content = {
                 type = "lvm_pv";
-                vg = "pool";
+                vg = "encpool";
               };
             };
           };
@@ -44,7 +44,7 @@
     };
 
     lvm_vg = {
-      pool = {
+      encpool = {
         type = "lvm_vg";
         lvs = {
           root = {