It should work

module-setup.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+depends() {
+  echo udev-rules zfs
+  return 0
+}
+
+install() {
+  # Install the appropriate binaries and libraries
+  inst_multiple /usr/bin /usr/bin/zlevis* /usr/bin/jose /usr/bin/tpm2* /usr/bin/mktemp
+  inst_multiple /usr/lib /usr/lib/libtss2-tcti*
+
+  # Run the zlevis decryption hook before the 90zfs hook
+  inst_hook pre-mount 85 "${moddir}/zlevis.sh"
+  inst_simple "${moddir}/zlevis.sh" "/sbin/zlevis.sh"
+}

zlevis.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# First make sure the zfs kmod is loaded
+modprobe zfs 2>/dev/null
+udevadm settle
+
+# Inspired by Alpine Linux's mkinitfs script -
+local _root_vol="${root}"
+local _root_pool="${_root_vol%%/*}"
+
+zpool import -N -d /dev $_root_pool
+
+if [ $(zpool list -H -o feature@encryption $_root_pool) = "active" ]; then
+	local _encryption_root=$(zfs get -H -o value encryptionroot $_root_vol)
+	if [ "$_encryption_root" != "-" ]; then
+		zlevis-fetch || echo "Zlevis-fetch failed!"
+	fi
+else 
+	echo "Something went wrong with zlevis-dracut!"
+fi
+