Merge branch 'master' into rrl-wip

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/packaging/dependencies.py b/tests/packaging/dependencies.py
new file mode 100755
index 00000000..1262d2e1
--- /dev/null
+++ b/tests/packaging/dependencies.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+import importlib
+import importlib.util
+import sys
+from types import ModuleType
+
+import pkg_resources
+
+# replace imports with mocks
+dummy = ModuleType("dummy")
+dummy.__dict__["setup"] = lambda *args, **kwargs: None
+dummy.__dict__["build"] = lambda *args, **kwargs: None
+sys.modules["setuptools"] = dummy
+sys.modules["build_c_extensions"] = dummy
+
+# load install_requires array from setup.py
+spec = importlib.util.spec_from_file_location("setup", sys.argv[1] if len(sys.argv) == 2 else "setup.py")
+mod = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(mod)
+install_requires = mod.install_requires
+
+# strip version codes
+deps = set((x[: x.index(">")].lower() if ">" in x else x.lower() for x in install_requires))
+
+# find out which packages are missing
+installed = {pkg.key for pkg in pkg_resources.working_set}
+missing = deps - installed
+
+# fail if there are some missing
+if len(missing) > 0:
+    print(f"Some required packages are missing: {missing}", file=sys.stderr)
+    exit(1)