daemonix approach

files/system/usr/bin/mount-nix-overlay.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+mkdir -p /usr/share/nix-store /var/lib/nix-store /var/cache/nix-store /nix
+
+# Skip if already mounted to avoid errors on reload.
+if mountpoint -q /nix; then
+  exit 0
+fi
+
+mount -t overlay overlay \
+  -o lowerdir=/usr/share/nix-store,upperdir=/var/lib/nix-store,workdir=/var/cache/nix-store \
+  /nix

files/system/usr/bin/nix-toolbox-ensure

@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-image_ref="${NIX_TOOLBOX_IMAGE:-ghcr.io/thrix/nix-toolbox:42}"
-container_name="${NIX_TOOLBOX_CONTAINER:-nix-toolbox-42}"
-
-if ! command -v toolbox >/dev/null 2>&1; then
-  echo "toolbox not installed; skipping nix-toolbox setup" >&2
-  exit 0
-fi
-
-if ! command -v podman >/dev/null 2>&1; then
-  echo "podman not installed; skipping nix-toolbox setup" >&2
-  exit 0
-fi
-
-if podman container exists "$container_name"; then
-  exit 0
-fi
-
-echo "Creating $container_name from $image_ref"
-distrobox create --name "$container_name" --image "$image_ref"