We're running into issues install iow with cython=3.0.4, but can confirm that it installs with cython=0.29.36
/usr/share/miniconda/envs/dynomics/lib/python3.8/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-5754f7ae/iow_5366f21e62044cd79a8c9be2f6701f3e/bp/GPL/_insert.pyx
tree = Parsing.p_module(s, pxd, full_module_name)
/usr/share/miniconda/envs/dynomics/lib/python3.8/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-5754f7ae/iow_5366f21e62044cd79a8c9be2f6701f3e/bp/_ba.pxd
tree = Parsing.p_module(s, pxd, full_module_name)
/usr/share/miniconda/envs/dynomics/lib/python3.8/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-5754f7ae/iow_5366f21e62044cd79a8c9be2f6701f3e/bp/_binary_tree.pxd
tree = Parsing.p_module(s, pxd, full_module_name)
/usr/share/miniconda/envs/dynomics/lib/python3.8/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-5754f7ae/iow_5366f21e62044cd79a8c9be2f6701f3e/bp/_bp.pxd
tree = Parsing.p_module(s, pxd, full_module_name)
performance hint: bp/_bp.pyx:349:29: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:362:29: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:371:29: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:376:33: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:378:33: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:387:27: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:389:31: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:402:27: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:404:31: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:450:25: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:453:31: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:468:26: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:473:40: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:473:30: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:484:26: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:487:43: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:487:32: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:489:40: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:489:30: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:517:28: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:519:41: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:519:31: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:542:27: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:544:41: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:544:31: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:567:28: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:569:42: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:569:32: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:584:26: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:600:42: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:600:28: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:602:28: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:617:36: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:617:24: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:642:25: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:644:34: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:660:25: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:662:26: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:684:25: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:686:29: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:700:40: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:700:29: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:717:26: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:719:28: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:722:39: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:722:30: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
performance hint: bp/_bp.pyx:737:33: Exception check will always require the GIL to be acquired. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: bp/tests/test_bp_cy.pyx
Compiling bp/_bp.pyx because it changed.
Compiling bp/_io.pyx because it changed.
Compiling bp/_conv.pyx because it changed.
Compiling bp/_binary_tree.pyx because it changed.
Compiling bp/_insert.pyx because it changed.
Compiling bp/GPL/_insert.pyx because it changed.
Compiling bp/tests/test_bp_cy.pyx because it changed.
Compiling bp/_ba.pyx because it changed.
[1/8] Cythonizing bp/GPL/_insert.pyx
[2/8] Cythonizing bp/_ba.pyx
[3/8] Cythonizing bp/_binary_tree.pyx
[4/8] Cythonizing bp/_bp.pyx
[5/8] Cythonizing bp/_conv.pyx
[6/8] Cythonizing bp/_insert.pyx
[7/8] Cythonizing bp/_io.pyx
[8/8] Cythonizing bp/tests/test_bp_cy.pyx
[end of output]
We're running into issues install iow with cython=3.0.4, but can confirm that it installs with cython=0.29.36
Below is the full error message