From acd2d93ad81ffad72c067e0cbf90bee809276951 Mon Sep 17 00:00:00 2001
From: Raghuram Subramani <raghus2247@gmail.com>
Date: Thu, 10 Oct 2024 10:03:42 +0530
Subject: (impermanence): Modularize config.

---
 machines/x/configuration.nix | 55 +++++++-------------------------------------
 1 file changed, 8 insertions(+), 47 deletions(-)

(limited to 'machines/x/configuration.nix')

diff --git a/machines/x/configuration.nix b/machines/x/configuration.nix
index 64da9ac..19305a1 100644
--- a/machines/x/configuration.nix
+++ b/machines/x/configuration.nix
@@ -1,11 +1,17 @@
 { lib, inputs, pkgs, ... }:
 
-{
+let
+  drive = "/dev/nvme0n1";
+in {
   imports = [
     ./hardware-configuration.nix
     inputs.home-manager.nixosModules.default
+
+    (import ../../disko.nix { device = drive; })
+
   ] ++ (map (path: ../../modules/${path}) [
     "core/global.nix"
+    "core/impermanence.nix"
 
     "amdgpu.nix"
     "amd.nix"
@@ -33,57 +39,12 @@
     grub = {
       enable = true;
       efiSupport = true;
-      device = "/dev/nvme0n1";
+      device = drive;
     };
   };
 
-  boot.initrd.postDeviceCommands = lib.mkAfter ''
-    mkdir /btrfs_tmp
-    mount /dev/root_vg/root /btrfs_tmp
-    if [[ -e /btrfs_tmp/root ]]; then
-        mkdir -p /btrfs_tmp/old_roots
-        timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
-        mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
-    fi
-
-    delete_subvolume_recursively() {
-        IFS=$'\n'
-        for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
-            delete_subvolume_recursively "/btrfs_tmp/$i"
-        done
-        btrfs subvolume delete "$1"
-    }
-
-    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
-        delete_subvolume_recursively "$i"
-    done
-
-    btrfs subvolume create /btrfs_tmp/root
-    umount /btrfs_tmp
-  '';
-
-  fileSystems."/persist".neededForBoot = true;
-  environment.persistence."/persist/system" = {
-    hideMounts = true;
-    directories = [
-      "/etc/nixos"
-      "/var/log"
-      "/var/lib/bluetooth"
-      "/var/lib/nixos"
-      "/var/lib/systemd/coredump"
-      "/etc/NetworkManager/system-connections"
-    ];
-    files = [
-      "/etc/machine-id"
-      { file = "/var/keys/secret_file"; parentDirectory = { mode = "u=rwx,g=,o="; }; }
-    ];
-  };
-
   boot.extraModprobeConfig = "options kvm_amd nested=1";
 
-  nixpkgs.config.allowUnfree = true;
-  nixpkgs.config.allowUnfreePredicate = _: true;
-
   services.fstrim.enable = true;
 
   networking.hostName = "x";
-- 
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