Tests can't be imported on 32-bit architectures: E AttributeError: module 'experimental' has no attribute 'igzip'

[mgorny]

When trying to run the test suite on 32-bit architectures (ARM, i686), I'm immediately getting the following failures:

========================================================= test session starts =========================================================
platform linux -- Python 3.12.7, pytest-8.3.3, pluggy-1.5.0
rootdir: /home/mgorny/cramjam
configfile: pyproject.toml
plugins: hypothesis-6.116.0
collected 1122 items / 2 errors                                                                                                       

=============================================================== ERRORS ================================================================
_____________________________________________ ERROR collecting tests/test_integration.py ______________________________________________
tests/test_integration.py:15: in <module>
    from .test_variants import same_same
<frozen importlib._bootstrap>:1360: in _find_and_load
    ???
<frozen importlib._bootstrap>:1331: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:935: in _load_unlocked
    ???
.venv/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:184: in exec_module
    exec(co, module.__dict__)
tests/test_variants.py:25: in <module>
    mod = getattr(cramjam.experimental, experimental_feat)
E   AttributeError: module 'experimental' has no attribute 'igzip'
_______________________________________________ ERROR collecting tests/test_variants.py _______________________________________________
tests/test_variants.py:25: in <module>
    mod = getattr(cramjam.experimental, experimental_feat)
E   AttributeError: module 'experimental' has no attribute 'igzip'
======================================================= short test summary info =======================================================
ERROR tests/test_integration.py - AttributeError: module 'experimental' has no attribute 'igzip'
ERROR tests/test_variants.py - AttributeError: module 'experimental' has no attribute 'igzip'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 2 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
========================================================== 2 errors in 1.17s ==========================================================

Looking at:

cramjam/src/experimental.rs

Lines 16 to 35 in a23b9ea

	#[cfg(all(
	any(feature = "ideflate", feature = "ideflate-static", feature = "ideflate-shared"),
	target_pointer_width = "64"
	))]
	#[pymodule_export]
	use crate::ideflate::ideflate;
	#[cfg(all(
	any(feature = "igzip", feature = "igzip-static", feature = "igzip-shared"),
	target_pointer_width = "64"
	))]
	#[pymodule_export]
	use crate::igzip::igzip;
	#[cfg(all(
	any(feature = "izlib", feature = "izlib-static", feature = "izlib-shared"),
	target_pointer_width = "64"
	))]
	#[pymodule_export]
	use crate::izlib::izlib;

The i* variants are never used on 32-bit architectures but the test suite seems to expect them unconditionally.