Revert "Now that NixOS/nixpkgs#282022 has landed, switch to gpt-auto …

…for the forseeable."

This reverts commit 4b2c89e.

Testing to see if it's what's causing my activation woes.

boot.nix

@@ -27,6 +27,7 @@ in
 
   boot.initrd.availableKernelModules = [
     "ahci"
+    "efivarfs"
     "nvme"
     "sd_mod"
     "usb_storage"
@@ -48,13 +49,17 @@ in
   # No software RAID in this system.
   boot.swraid.enable = false;
 
-  # Use `systemd-gpt-auto-root` to detect the root filesystem partition.
-  boot.initrd.supportedFilesystems = [ "ext4" ];
-  boot.initrd.systemd.root = "gpt-auto";
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/d5a0f038-5839-44e1-ad49-5edd00d7f81e";
+      fsType = "ext4";
+    };
 
-  # Mount the boot partition specifically. I'd like to move this to a mount unit.
-  fileSystems."/boot".device = "/dev/disk/by-uuid/0D2C-FF36";
-  fileSystems."/boot".fsType = "vfat";
+    "/boot" = {
+      device = "/dev/disk/by-uuid/0D2C-FF36";
+      fsType = "vfat";
+    };
+  };
 
   # No swap devices in this system (maybe a bad call.)
   swapDevices = [ ];