From 99c34cc1d64dfb528a939456699ca67943dec42f Mon Sep 17 00:00:00 2001
From: Gunnar Wolf <gwolf@gwolf.org>
Date: Fri, 28 May 2021 18:48:39 -0500
Subject: [PATCH] Remove /etc/machine-id so that it gets generated upon the
 (real) first boot

---
 raspi_master.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/raspi_master.yaml b/raspi_master.yaml
index 928388a..78cc256 100644
--- a/raspi_master.yaml
+++ b/raspi_master.yaml
@@ -149,3 +149,15 @@ steps:
   - shell: |
       rm "${ROOT?}/etc/resolv.conf"
     root-fs: /
+
+  # Clear /etc/machine-id, it should be auto-generated upon first
+  # boot. From the manpage (machine-id(5)):
+  #
+  #   For normal operating system installations, where a custom image is
+  #   created for a specific machine, /etc/machine-id should be
+  #   populated during installation.
+  #
+  # Note this will also trigger ConditionFirstBoot=yes for systemd.
+  - chroot: /
+    shell: |
+      rm -f /etc/machine-id