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-rw-r--r--mesonbuild/interpreter.py7
-rw-r--r--test cases/failing/34 dependency not-required then required/meson.build4
2 files changed, 11 insertions, 0 deletions
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 5203528..50de9e1 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -1860,6 +1860,13 @@ requirements use the version keyword argument instead.''')
# Cached dep has the wrong version. Check if an external
# dependency or a fallback dependency provides it.
cached_dep = None
+
+ # Don't re-use cached dep if it wasn't required but this one is,
+ # so we properly go into fallback/error code paths
+ if 'required' in kwargs and cached_dep is not None:
+ if not cached_dep.required and kwargs.get('required', True):
+ cached_dep = None
+
if cached_dep:
dep = cached_dep
else:
diff --git a/test cases/failing/34 dependency not-required then required/meson.build b/test cases/failing/34 dependency not-required then required/meson.build
new file mode 100644
index 0000000..f33c41c
--- /dev/null
+++ b/test cases/failing/34 dependency not-required then required/meson.build
@@ -0,0 +1,4 @@
+project('dep-test', 'c', version : '1.0')
+
+foo_dep = dependency('foo-bar-xyz-12.3', required : false)
+bar_dep = dependency('foo-bar-xyz-12.3', required : true)