Can't use pycryptodome before "import psutil" due to "Unknown identifier: PyObject_GetBuffer"

[buuuuuuug]

pycryptodome cannot be imported and used before a python statement "import psutil" which is rather odd!

if not "import psutil", will run into a error like:

[ERROR] org.example.embedding.test.EmbeddingTest.testFail -- Time elapsed: 43.38 s <<< ERROR!
AttributeError: AttributeError: UnknownIdentifierException: Unknown identifier: PyObject_GetBuffer

Java stack trace:
com.oracle.truffle.api.interop.UnknownIdentifierException: Unknown identifier: PyObject_GetBuffer

        at <python> <module>(Unknown)
        at org.graalvm.polyglot.Context.eval(Context.java:449)
        at org.example.embedding.Main.main(Main.java:83)
        at org.example.embedding.test.EmbeddingTest.testFail(EmbeddingTest.java:60)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:565)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
        at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
        at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:385)
        at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
        at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:507)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:495)

there is a repo which will reproduces the error
https://github.com/buuuuuuug/pycrypto_graalpy

clone

git clone https://github.com/buuuuuuug/pycrypto_graalpy.git && cd pycrypto_graalpy

versions

mvn --version

Apache Maven 3.9.11 (3e54c93a704957b63ee3494413a2b544fd3d825b)
Maven home: /root/.sdkman/candidates/maven/current
Java version: 25, vendor: Oracle Corporation, runtime: /root/.sdkman/candidates/java/25-graal
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "6.8.0-40-generic", arch: "amd64", family: "unix"

test

mvn test

there are two tests, the first one will run "import psutil" before import Crypto, and it passes!

the second one, will not run "import psutil", and there it fails.

public class EmbeddingTest {
	
	@Test
	public void testSuccess() throws IOException {
		// success
		Main.main(new String[1]);
	}

	@Test
	public void testFail() throws IOException {
		// fail
		Main.main(new String[0]);
	}
}

[buuuuuuug]

update:

it does not have to be psutil, any python package that load a C extension also has the same effect, like lxml.

but here is a another problem: when built context with option
.option("python.IsolateNativeModules", "true"), even if i have run code import psutil, the following from Crypto.Cipher import AES still errors with exactly msg above.

[buuuuuuug]

it still confuses me that why does pycryptodome have anything to do with C extension given that it itself dose not laod any C extensions at all