Migrate global configuration to and expand home

- Move lots of system config to home (browser, editors, etc.)
- Improve catppuccin support (kitty, cursors, etc.)
- Improve overall theme (fonts, icons in kitty)
- Add coded's system hardware configuration ("shorthair")
- Add the ed editor
- Split minion's system hardware configuration ("greylag") into several files
- Improve shell support (aliases, useful packages, replacements, etc.)

Change-Id: Ie6d40f809b2662268a9a6fa8b241641bbfef9442
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/383
Tested-by: Skyler Grey <minion@clicks.codes>
Reviewed-by: Samuel Shuert <coded@clicks.codes>
diff --git a/systems/x86_64-linux/greylag/boot/filesystems/default.nix b/systems/x86_64-linux/greylag/boot/filesystems/default.nix
new file mode 100644
index 0000000..4890eb5
--- /dev/null
+++ b/systems/x86_64-linux/greylag/boot/filesystems/default.nix
@@ -0,0 +1,71 @@
+{ lib, ... }:
+{
+  fileSystems =
+    (lib.mapAttrs
+      (_: share_name: {
+        device = "/dev/disk/by-label/BTRFS0";
+        fsType = "btrfs";
+        options = [
+          "subvol=shared/${share_name}"
+          "compress=zstd:1"
+        ];
+      })
+      {
+        "/home/minion/Code" = "@Code";
+        "/var/lib/containers" = "@containers";
+        "/etc/NetworkManager" = "@NetworkManager";
+        "/home/minion/.local/share/containers/storage" = "@personal-containers";
+        "/home/minion/.gtimelog" = "@gtimelog";
+        "/home/minion/Documents" = "@documents";
+      }
+    )
+    // {
+      "/mnt" = {
+        device = "/dev/mapper/key";
+        fsType = "ext4";
+      };
+
+      "/" = {
+        device = "/dev/disk/by-label/BTRFS0";
+        fsType = "btrfs";
+        options = [
+          "subvol=@nixos"
+          "compress=zstd:1"
+        ];
+      };
+
+      "/var" = {
+        device = "/dev/disk/by-label/BTRFS0";
+        fsType = "btrfs";
+        options = [
+          "subvol=@nixos-var"
+          "compress=zstd:1"
+        ];
+      };
+
+      "/home" = {
+        device = "/dev/disk/by-label/BTRFS0";
+        fsType = "btrfs";
+        options = [
+          "subvol=@nixos-home"
+          "compress=zstd:1"
+        ];
+      };
+
+      "/nix" = {
+        device = "/dev/disk/by-label/BTRFS0";
+        fsType = "btrfs";
+        options = [
+          "subvol=@nixos-nix"
+          "compress=zstd:1"
+        ];
+      };
+
+      "/boot" = {
+        device = "/dev/disk/by-label/ESP";
+        fsType = "vfat";
+      };
+    };
+
+  swapDevices = [ ];
+}
diff --git a/systems/x86_64-linux/greylag/boot/initrd/default.nix b/systems/x86_64-linux/greylag/boot/initrd/default.nix
new file mode 100644
index 0000000..0ef8a71
--- /dev/null
+++ b/systems/x86_64-linux/greylag/boot/initrd/default.nix
@@ -0,0 +1,30 @@
+{ ... }:
+{
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  boot.initrd.availableKernelModules = [
+    "xhci_pci"
+    "thunderbolt"
+    "nvme"
+    "uas"
+    "usbhid"
+    "sd_mod"
+    "ext4"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  boot.initrd.systemd.enable = true; # needed for the way we do our YubiKey
+  boot.initrd.luks.devices."key".device = "/dev/disk/by-label/KEY";
+
+  boot.initrd.luks.devices."luks-expansion0" = {
+    device = "/dev/disk/by-label/EXPANSION0";
+    keyFile = "/key:/dev/mapper/key";
+  };
+  boot.initrd.luks.devices."luks-ssd0" = {
+    device = "/dev/disk/by-label/SSD0";
+    keyFile = "/key:/dev/mapper/key";
+  };
+}