Try multi-kernel initramfs module

modules/initramfs/initramfs.nu

@@ -0,0 +1,49 @@
+#!/usr/bin/env nu
+
+def main [_config: string] {
+  const WRAPPED_DRACUT_PATH = '/usr/libexec/rpm-ostree/wrapped/dracut'
+  const DRACUT_PATH = '/usr/bin/dracut'
+  const KERNEL_MODULES_PATH = '/usr/lib/modules'
+
+  let rpm_ostree_exists = (^command -v rpm-ostree | complete).exit_code == 0
+  let bootc_exists = (^command -v bootc | complete).exit_code == 0
+
+  if not ($rpm_ostree_exists or $bootc_exists) {
+    return (error make {
+      msg: 'This module is only compatible with Fedora Atomic images'
+      labels: [
+        {
+          text: 'Checks for rpm-ostree'
+          span: (metadata $rpm_ostree_exists).span
+        }
+        {
+          text: 'Checks for bootc'
+          span: (metadata $bootc_exists).span
+        }
+      ]
+    })
+  }
+
+  let dracut_path = if ($WRAPPED_DRACUT_PATH | path exists) {
+    $WRAPPED_DRACUT_PATH
+  } else {
+    $DRACUT_PATH
+  }
+
+  ls $KERNEL_MODULES_PATH
+    | get name
+    | path basename
+    | each {|kernel|
+      let image_path = [$KERNEL_MODULES_PATH $kernel initramfs.img] | path join
+      try {
+        (^$dracut_path
+          --no-hostonly
+          --kver $kernel
+          --reproducible
+          -v
+          --add ostree
+          -f $image_path)
+      }
+      chmod 0600 $image_path
+    }
+}