1 files changed, 50 insertions, 34 deletions
diff --git a/impermanence.nix b/impermanence.nix
index 0592049..d3dae53 100644
--- a/impermanence.nix
+++ b/impermanence.nix
@@ -1,40 +1,56 @@
-{ lib, ... }: {
-  boot.initrd.postResumeCommands = lib.mkAfter ''
-    mkdir /btrfs_tmp
-    mount /dev/disk/by-partlabel/disk-main-root /btrfs_tmp # CONFIRM THIS IS CORRECT FROM findmnt
-    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
+# sudo mount --ro /dev/nvme0n1p2 ./mnt --mkdir
+# ls mnt/old_roots
 
-    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 "$1"
-    }
+{ lib, config, ... }:
+let
+  cfg = config.oden.persist;
+in
+{
+  options.oden.persist = with lib; with types; {
+    directories = mkOption {
+      type = listOf str;
+      default = [];
+      description = "Directories that should be persisted";
+    };
+  };
+  config = {
+    boot.initrd.postResumeCommands = lib.mkAfter ''
+      mkdir /btrfs_tmp
+      mount /dev/disk/by-partlabel/disk-main-root /btrfs_tmp # CONFIRM THIS IS CORRECT FROM findmnt
+      if [[ -e /btrfs_tmp/root ]]; then
+        mkdir -p /btrfs_tmp/old_roots
+        timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
+        mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+      fi
 
-    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
-      delete_subvolume_recursively "$i"
-    done
+      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
-  '';
+      btrfs subvolume create /btrfs_tmp/root
+      umount /btrfs_tmp
+    '';
 
-  environment.persistence."/nix/persist" = {
-    hideMounts = true;
-    directories = [
-      "/var/log"
-      "/var/lib/nixos"
-      "/var/lib/systemd/coredump"
-    ];
-    files = [
-      "/etc/machine-id"
-      "/etc/ssh/ssh_host_ed25519_key"
-      "/etc/ssh/ssh_host_ed25519_key.pub"
-    ];
+    environment.persistence."/nix/persist" = {
+      hideMounts = true;
+      directories = cfg.directories ++ [
+        "/var/log"
+        "/var/lib/nixos"
+        "/var/lib/systemd"
+      ];
+      files = [
+        "/etc/machine-id"
+        "/etc/ssh/ssh_host_ed25519_key"
+        "/etc/ssh/ssh_host_ed25519_key.pub"
+      ];
+    };
   };
 }