chore: bump all

2026-06-07 13:26:45 -06:00
parent ce31e48d42
commit 3ad33b734a
19 changed files with 741 additions and 726 deletions
@@ -24,36 +24,75 @@ in {
  };

  config = mkIf cfg.enable {
-    boot.initrd.postDeviceCommands = ''
-      # Mount the btrfs filesystem.
-      mkdir -p /btrfs-tmp
-      mount -t btrfs "${cfg.device}" /btrfs-tmp
+    boot.initrd.systemd = {
+      services.impermance-btrfs-rolling-root = {
+        description = "Archiving existing BTRFS root subvolume and creating a fresh one";
+        unitConfig.DefaultDependencies = false;
+        serviceConfig = {
+          # The script needs to run to completion before this service
+          # is done
+          Type = "oneshot";
+          # NOTE: to be able to see errors in your script do this
+          StandardOutput = "journal+console";
+          StandardError = "journal+console";
+        };
+        # This service is required for boot to succeed
+        requiredBy = ["initrd.target"];
+        # Should complete before any file systems are mounted
+        before = ["sysroot.mount"];

-      # If the moribund subvolume exists, send it do 'death row' (old-roots),
-      # where live for about three days before its eventual deletion.
-      if [[ -e "/btrfs-tmp/${cfg.subvolume}" ]]; then
-          mkdir -p /btrfs-tmp/old-roots
-          timestamp=$(date --date="@$(stat -c %Y "/btrfs-tmp/${cfg.subvolume}")" "+%Y-%m-%-d_%H:%M:%S")
-          mv "/btrfs-tmp/${cfg.subvolume}" "/btrfs-tmp/old-roots/$timestamp"
-      fi
+        # Wait until the root device is available
+        # If you're altering a different device, specify its device unit explicitly.
+        # see: systemd-escape(1)
+        requires = ["initrd-root-device.target"];
+        after = [
+          "initrd-root-device.target"
+          # Allow hibernation to resume before trying to alter any data
+          "local-fs-pre.target"
+        ];

-      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 "$1"
-      }
+        script = ''
+          # Mount the btrfs filesystem.
+            mkdir -p /btrfs-tmp
+            mount -t btrfs "${cfg.device}" /btrfs-tmp

-      # Delete previous roots older than three days.
-      # TODO: I would prefer archiving the last N previous roots, rather than
-      # time.
-      for i in $(find /btrfs-tmp/old-roots/ -maxdepth 1 -mtime +3); do
-          delete_subvolume_recursively "$i"
-      done
+            # If the moribund subvolume exists, send it do 'death row' (old-roots),
+            # where live for about three days before its eventual deletion.
+            if [[ -e "/btrfs-tmp/${cfg.subvolume}" ]]; then
+                mkdir -p /btrfs-tmp/old-roots
+                timestamp=$(date --date="@$(stat -c %Y "/btrfs-tmp/${cfg.subvolume}")" "+%Y-%m-%-d_%H:%M:%S")
+                mv "/btrfs-tmp/${cfg.subvolume}" "/btrfs-tmp/old-roots/$timestamp"
+            fi

-      btrfs subvolume create "/btrfs-tmp/${cfg.subvolume}"
-      umount /btrfs-tmp
-    '';
+            delete_subvolume_recursively() {
+                IFS=$'\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"
+            }
+
+            # Delete previous roots older than three days.
+            # TODO: I would prefer archiving the last N previous roots, rather than
+            # time.
+            for i in $(find /btrfs-tmp/old-roots/ -maxdepth 1 -mtime +3); do
+                delete_subvolume_recursively "$i"
+            done
+
+            btrfs subvolume create "/btrfs-tmp/${cfg.subvolume}"
+            umount /btrfs-tmp
+        '';
+      };
+      # NOTE: path = [...]; doesnt work for initrd, use full paths in
+      # your script or extraBin
+      extraBin = {
+        "mkdir" = "${pkgs.coreutils}/bin/mkdir";
+        "date" = "${pkgs.coreutils}/bin/date";
+        "stat" = "${pkgs.coreutils}/bin/stat";
+        "mv" = "${pkgs.coreutils}/bin/mv";
+        "find" = "${pkgs.findutils}/bin/find";
+        "btrfs" = "${pkgs.btrfs-progs}/bin/btrfs";
+      };
+    };
  };
 }