From 3b084286c97a75e8d2eb0ae06819bb5fd43bb8e9 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Tue, 3 Oct 2023 15:24:27 +0200
Subject: lindy: reinstall on zfs

---
 nixos/lindy.nix | 100 ++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 65 insertions(+), 35 deletions(-)

(limited to 'nixos')

diff --git a/nixos/lindy.nix b/nixos/lindy.nix
index 760b656..471026d 100644
--- a/nixos/lindy.nix
+++ b/nixos/lindy.nix
@@ -11,7 +11,13 @@
   ];
 
   networking.hostName = "lindy";
-  networking.hostId = "00000000";
+  networking.hostId = "b8149765";
+
+  # Driver config
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
+  boot.kernelModules = [ "kvm-intel" "wl" ];
+  boot.extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
 
   # ZFS config
   boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
@@ -24,59 +30,83 @@
 
   # Use Grub
   boot.loader.grub.enable = true;
+  boot.loader.grub.efiSupport = true;
   boot.loader.grub.device = "nodev";
   boot.loader.grub.extraGrubInstallArgs = [ "--bootloader-id=NixOS" ];
   boot.loader.efi.efiSysMountPoint = "/boot/efi";
   boot.loader.efi.canTouchEfiVariables = true;
 
-  boot.initrd.availableKernelModules =
-    [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" ];
-  boot.initrd.kernelModules = [ "dm-snapshot" ];
-  boot.kernelModules = [ "kvm-intel" "wl" ];
-  boot.extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
-
   boot.initrd.luks.devices = {
     cryptssd = {
-      device = "/dev/disk/by-uuid/1b074a78-9116-420e-b872-7bf49ca10ce1";
+      device = "/dev/disk/by-uuid/a5aad0b3-fb8c-4711-80db-d8fdcc832f83";
       allowDiscards = true;
     };
   };
 
+  fileSystems."/" =
+    { device = "none";
+      fsType = "tmpfs";
+      options = [ "defaults" "size=6G" "mode=755" ];
+    };
+
+  fileSystems."/var" =
+    { device = "lindy/nixos/var";
+      fsType = "zfs";
+    };
+
+  fileSystems."/home" =
+    { device = "lindy/home";
+      fsType = "zfs";
+      neededForBoot = true; # because contains password files used below
+    };
+
+  fileSystems."/nix" =
+    { device = "lindy/nixos/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/b9f80731-ac5a-476e-9454-32fef4ebc40f";
+      fsType = "ext4";
+      options = [ "discard" ];
+    };
+
+  fileSystems."/boot/efi" =
+    { device = "/dev/disk/by-uuid/02D0-F1C6";
+      fsType = "vfat";
+    };
+
+  fileSystems."/root" =     # /root contains the Borg cache for the backup script
+    { device = "/nix/persist/root";
+      fsType = "none";
+      options = [ "bind" ];
+    };
+
+  fileSystems."/etc/NetworkManager/system-connections" =
+    { device = "/nix/persist/etc/NetworkManager/system-connections";
+      fsType = "none";
+      options = [ "bind" ];
+    };
+
+  environment.etc."machine-id".source = "/nix/persist/etc/machine-id";
+
+  # ---- zonz (encrypted zfs) ----
+
   environment.etc.crypttab = {
     enable = true;
     text = ''
-Kurisu UUID=f593d307-66cc-4586-a899-f1ca20d74430 /root/kurisu_key
-Kogami UUID=61534c91-df18-4c71-9244-54e677f5d4fa /root/kogami_key
+Kurisu UUID=f593d307-66cc-4586-a899-f1ca20d74430 /nix/persist/root/kurisu_key
+Kogami UUID=61534c91-df18-4c71-9244-54e677f5d4fa /nix/persist/root/kogami_key
     '';
   };
 
-  fileSystems."/" = {
-    device = "/dev/disk/by-uuid/2e64e6fc-ab7c-4620-b56b-faee641bd2a6";
-    fsType = "ext4";
-    options = [ "discard" ];
-  };
-
-  fileSystems."/home" = {
-    device = "/dev/disk/by-uuid/1ef4b6f4-975d-4e04-9d88-0640e83ed0b4";
-    fsType = "ext4";
-    options = [ "discard" ];
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/0728e7e5-8e21-44bd-9287-eb066d489a0e";
-    fsType = "ext4";
-    options = [ "discard" ];
-  };
-
-  fileSystems."/boot/efi" = {
-    device = "/dev/disk/by-uuid/02D0-F1C6";
-    fsType = "vfat";
-  };
+  # ---- immutable user config ----
 
-  swapDevices =
-    [{ device = "/dev/disk/by-uuid/5950785a-9793-4d04-b791-8f4dbc497ec3"; }];
+  users.mutableUsers = false;
+  users.users.lx.passwordFile = "/home/lx/.password";
+  users.users.lx.uid = 1000;
 
-  users.users.lx.home = "/home/lx.nix";
+  # ----
 
   # Backup
   services.cron.enable = true;
-- 
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