As documented in /meson.build where the variable is defined,
meson.build_root() doesn't work as expected with project nesting. I have
no idea why anyone would want to embed systemd in another meson project,
but let's use the variable if we have it.
test_env = environment()
test_env.set('SYSTEMD_KBD_MODEL_MAP', kbd_model_map)
test_env.set('SYSTEMD_LANGUAGE_FALLBACK_MAP', language_fallback_map)
-test_env.set('PATH', '@0@:@1@'.format(meson.build_root(), path))
+test_env.set('PATH', project_build_root + ':' + path)
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