feat(tazjin/tverskoy): Configure impermanence module r/2300

This module is responsible for mounting persistent storage into the
ephemeral root disk of this machine.

Currently only very basic configuration and data are retained, and
hopefully that won't change.

Change-Id: If800cbee60b7b3c5b8c457b9b332a0c05c33f20e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2621
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

1 files changed, 17 insertions, 0 deletions

diff --git a/users/tazjin/nixos/tverskoy/default.nix b/users/tazjin/nixos/tverskoy/default.nix
index 74c676f4e3..3c4b9dae11 100644
--- a/users/tazjin/nixos/tverskoy/default.nix
+++ b/users/tazjin/nixos/tverskoy/default.nix
@@ -17,6 +17,10 @@ config: let
     monolithic = false;
   };
 in lib.fix(self: {
+  imports = [
+    "${depot.third_party.impermanence}/nixos.nix"
+  ];
+
   boot = {
     initrd.availableKernelModules = [ "nvme" "ehci_pci" "xhci_pci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
     initrd.kernelModules = [ ];
@@ -52,6 +56,7 @@ in lib.fix(self: {
     "/persist" = {
       device = "zpool/safe/persist";
       fsType = "zfs";
+      neededForBoot = true;
     };
 
     "/boot" = {
@@ -98,6 +103,18 @@ in lib.fix(self: {
     };
   };
 
+  environment.persistence."/persist" = {
+    directories = [
+      "/var/log"
+      "/var/lib/bluetooth"
+      "/var/lib/systemd/coredump"
+      "/etc/NetworkManager/system-connections"
+    ];
+    files = [
+      "/etc/machine-id"
+    ];
+  };
+
   security.rtkit.enable = true;
   services = {
     pipewire = {