Try Patch proposed by Kou

Author: raulcd

c_glib/doc/meson.build

@@ -20,21 +20,7 @@ gi_docgen = find_program('gi-docgen')
 
 gi_docgen_toml_conf = configuration_data()
 gi_docgen_toml_conf.set('SOURCE_REFERENCE', source_reference)
-# We can't use "version.replace('-SNAPSHOT', '.dev')" here because
-# Ubuntu 20.04's Meson is < 0.58.0.
-# Is the above comment still relevant?
-if version_tag == ''
-    gi_docgen_version_tag = ''
-else
-    # GI-DocGen doesn't like MAJOR.MINOR.PATCH-SNAPSHOT format.
-    gi_docgen_version_tag = '.dev'
-endif
-gi_docgen_version = '@0@.@1@.@2@@3@'.format(
-    version_major,
-    version_minor,
-    version_micro,
-    gi_docgen_version_tag,
-)
+gi_docgen_version = version.replace('-SNAPSHOT', '.dev')
 gi_docgen_toml_conf.set('VERSION', gi_docgen_version)
 
 gir_top_build_dir = meson.current_build_dir() / '..'