From 7b40a84f2438a482c86b2bc42a93864fb9eca278 Mon Sep 17 00:00:00 2001
From: Richard Hughes <richard@hughsie.com>
Date: Thu, 10 Jun 2021 20:59:58 +0100
Subject: [PATCH] trivial: Check for python3-markdown >= 3.3.4 for gi-docgen

---
 docs/test-deps.py | 15 +++++++++++++++
 meson.build       |  4 ++++
 2 files changed, 19 insertions(+)
 create mode 100755 docs/test-deps.py

diff --git a/docs/test-deps.py b/docs/test-deps.py
new file mode 100755
index 000000000..967f7676b
--- /dev/null
+++ b/docs/test-deps.py
@@ -0,0 +1,15 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: LGPL-2.1+
+
+import sys
+import markdown
+
+from distutils.version import LooseVersion
+
+# https://github.com/fwupd/fwupd/pull/3337#issuecomment-858947695
+if LooseVersion(markdown.version) < LooseVersion("3.3.4"):
+    print("python3-markdown version 3.3.4 required for gi-docgen")
+    sys.exit(1)
+
+# success
+sys.exit(0)
diff --git a/meson.build b/meson.build
index bd6d91fe5..1f89e6070 100644
--- a/meson.build
+++ b/meson.build
@@ -538,6 +538,10 @@ root_incdir = include_directories('.')
 if get_option('docs') == 'gtkdoc'
   gtkdocscan = find_program('gtkdoc-scan')
 elif get_option('docs') == 'docgen'
+  r = run_command([python3, 'docs/test-deps.py'])
+  if r.returncode() != 0
+    error(r.stdout())
+  endif
   gidocgen_dep = dependency('gi-docgen',
     version: '>= 2021.1',
     fallback: ['gi-docgen', 'dummy_dep'],