Cannot install scikit-garden on Ubuntu

[Mark531]

Hello,

I managed to install scikit-garden on my Linux but it fails on my Ubuntu:

2020-12-08T18:45:02.0025765Z Collecting scikit-garden==0.1.3 (from -r /root//sku_potential_forecast/requirements.txt (line 15))
2020-12-08T18:45:02.1003720Z   Downloading https://files.pythonhosted.org/packages/63/0f/850592f6e8619d42086cdcc6a1731a4254f74db09878a155ab3d4cdc55ef/scikit-garden-0.1.3.tar.gz (317kB)
2020-12-08T18:45:05.5509924Z     Complete output from command python setup.py egg_info:
2020-12-08T18:45:05.5514464Z     /tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Compiler/Main.py:344: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-6sv7xy9u/scikit-garden/skgarden/mondrian/tree/_criterion.pxd
2020-12-08T18:45:05.5515246Z       tree = Parsing.p_module(s, pxd, full_module_name)
2020-12-08T18:45:05.5518317Z     
2020-12-08T18:45:05.5518784Z     Error compiling Cython file:
2020-12-08T18:45:05.5519630Z     ------------------------------------------------------------
2020-12-08T18:45:05.5520321Z     ...
2020-12-08T18:45:05.5520560Z     
2020-12-08T18:45:05.5520802Z     # See _utils.pyx for details.
2020-12-08T18:45:05.5521042Z     
2020-12-08T18:45:05.5521284Z     import numpy as np
2020-12-08T18:45:05.5521532Z     cimport numpy as np
2020-12-08T18:45:05.5522492Z     from _tree cimport Node
2020-12-08T18:45:05.5522946Z     ^
2020-12-08T18:45:05.5523652Z     ------------------------------------------------------------
2020-12-08T18:45:05.5524080Z     
2020-12-08T18:45:05.5524712Z     skgarden/mondrian/tree/_utils.pxd:13:0: '_tree.pxd' not found
2020-12-08T18:45:05.5525131Z     
2020-12-08T18:45:05.5525440Z     Error compiling Cython file:
2020-12-08T18:45:05.5526342Z     ------------------------------------------------------------
2020-12-08T18:45:05.5526681Z     ...
2020-12-08T18:45:05.5526887Z     
2020-12-08T18:45:05.5527126Z     # See _utils.pyx for details.
2020-12-08T18:45:05.5527446Z     
2020-12-08T18:45:05.5527833Z     import numpy as np
2020-12-08T18:45:05.5528083Z     cimport numpy as np
2020-12-08T18:45:05.5529211Z     from _tree cimport Node
2020-12-08T18:45:05.5529396Z     ^
2020-12-08T18:45:05.5530122Z     ------------------------------------------------------------
2020-12-08T18:45:05.5530353Z     
2020-12-08T18:45:05.5530764Z     skgarden/mondrian/tree/_utils.pxd:13:0: '_tree/Node.pxd' not found
2020-12-08T18:45:05.5530981Z     
2020-12-08T18:45:05.5531160Z     Error compiling Cython file:
2020-12-08T18:45:05.5531583Z     ------------------------------------------------------------
2020-12-08T18:45:05.5532182Z     ...
2020-12-08T18:45:05.5532505Z         (DTYPE_t*)
2020-12-08T18:45:05.5532658Z         (SIZE_t*)
2020-12-08T18:45:05.5532819Z         (unsigned char*)
2020-12-08T18:45:05.5532998Z         (DOUBLE_t*)
2020-12-08T18:45:05.5533317Z         (DOUBLE_t**)
2020-12-08T18:45:05.5533463Z         (Node*)
2020-12-08T18:45:05.5533776Z         ^
2020-12-08T18:45:05.5534606Z     ------------------------------------------------------------
2020-12-08T18:45:05.5534832Z     
2020-12-08T18:45:05.5535279Z     skgarden/mondrian/tree/_utils.pxd:40:5: 'Node' is not a type identifier
2020-12-08T18:45:05.5535495Z     
2020-12-08T18:45:05.5535667Z     Error compiling Cython file:
2020-12-08T18:45:05.5536072Z     ------------------------------------------------------------
2020-12-08T18:45:05.5536269Z     ...
2020-12-08T18:45:05.5536412Z         (SIZE_t*)
2020-12-08T18:45:05.5536563Z         (unsigned char*)
2020-12-08T18:45:05.5536716Z         (DOUBLE_t*)
2020-12-08T18:45:05.5536886Z         (DOUBLE_t**)
2020-12-08T18:45:05.5537391Z         (Node*)
2020-12-08T18:45:05.5537707Z         (Node**)
2020-12-08T18:45:05.5538044Z         ^
2020-12-08T18:45:05.5538465Z     ------------------------------------------------------------
2020-12-08T18:45:05.5538685Z     
2020-12-08T18:45:05.5539141Z     skgarden/mondrian/tree/_utils.pxd:41:5: 'Node' is not a type identifier
2020-12-08T18:45:05.5539387Z     
2020-12-08T18:45:05.5539568Z     Error compiling Cython file:
2020-12-08T18:45:05.5540047Z     ------------------------------------------------------------
2020-12-08T18:45:05.5540278Z     ...
2020-12-08T18:45:05.5540425Z         (SIZE_t*)
2020-12-08T18:45:05.5540614Z         (unsigned char*)
2020-12-08T18:45:05.5540787Z         (DOUBLE_t*)
2020-12-08T18:45:05.5540955Z         (DOUBLE_t**)
2020-12-08T18:45:05.5541136Z         (Node*)
2020-12-08T18:45:05.5541292Z         (Node**)
2020-12-08T18:45:05.5542348Z        ^
2020-12-08T18:45:05.5543040Z     ------------------------------------------------------------
2020-12-08T18:45:05.5543296Z     
2020-12-08T18:45:05.5543543Z     skgarden/mondrian/tree/_utils.pxd:41:4: Type specified multiple times
2020-12-08T18:45:05.5543813Z     
2020-12-08T18:45:05.5544002Z     Error compiling Cython file:
2020-12-08T18:45:05.5545000Z     ------------------------------------------------------------
2020-12-08T18:45:05.5545378Z     ...
2020-12-08T18:45:05.5545593Z             self.sum_total = NULL
2020-12-08T18:45:05.5545793Z             self.sum_left = NULL
2020-12-08T18:45:05.5546153Z             self.sum_right = NULL
2020-12-08T18:45:05.5546335Z             self.n_classes = NULL
2020-12-08T18:45:05.5546497Z     
2020-12-08T18:45:05.5546667Z             safe_realloc(&self.n_classes, n_outputs)
2020-12-08T18:45:05.5546865Z                        ^
2020-12-08T18:45:05.5547315Z     ------------------------------------------------------------
2020-12-08T18:45:05.5547510Z     
2020-12-08T18:45:05.5547723Z     skgarden/mondrian/tree/_criterion.pyx:554:20: ambiguous overloaded method
2020-12-08T18:45:05.5548409Z     
2020-12-08T18:45:05.5548576Z     Error compiling Cython file:
2020-12-08T18:45:05.5549057Z     ------------------------------------------------------------
2020-12-08T18:45:05.5549276Z     ...
2020-12-08T18:45:05.5549426Z             self.sum_total = NULL
2020-12-08T18:45:05.5549624Z             self.sum_left = NULL
2020-12-08T18:45:05.5549804Z             self.sum_right = NULL
2020-12-08T18:45:05.5549986Z             self.n_classes = NULL
2020-12-08T18:45:05.5550157Z     
2020-12-08T18:45:05.5550326Z             safe_realloc(&self.n_classes, n_outputs)
2020-12-08T18:45:05.5550669Z            ^
2020-12-08T18:45:05.5551087Z     ------------------------------------------------------------
2020-12-08T18:45:05.5554072Z     
2020-12-08T18:45:05.5554327Z     skgarden/mondrian/tree/_criterion.pyx:554:8: Invalid use of fused types, type cannot be specialized
2020-12-08T18:45:05.5554676Z     Traceback (most recent call last):
2020-12-08T18:45:05.5555071Z       File "<string>", line 1, in <module>
2020-12-08T18:45:05.5555672Z       File "/tmp/pip-install-6sv7xy9u/scikit-garden/setup.py", line 61, in <module>
2020-12-08T18:45:05.5555965Z         setup_requires=["cython"])
2020-12-08T18:45:05.5556446Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/core.py", line 135, in setup
2020-12-08T18:45:05.5556743Z         config = configuration()
2020-12-08T18:45:05.5557200Z       File "/tmp/pip-install-6sv7xy9u/scikit-garden/setup.py", line 25, in configuration
2020-12-08T18:45:05.5557649Z         config.add_subpackage('skgarden')
2020-12-08T18:45:05.5558187Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 1020, in add_subpackage
2020-12-08T18:45:05.5558478Z         caller_level = 2)
2020-12-08T18:45:05.5558970Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 989, in get_subpackage
2020-12-08T18:45:05.5559298Z         caller_level = caller_level + 1)
2020-12-08T18:45:05.5559855Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 926, in _get_configuration_from_setup_py
2020-12-08T18:45:05.5560384Z         config = setup_module.configuration(*args)
2020-12-08T18:45:05.5560621Z       File "skgarden/setup.py", line 9, in configuration
2020-12-08T18:45:05.5560845Z         config.add_subpackage("mondrian")
2020-12-08T18:45:05.5561363Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 1020, in add_subpackage
2020-12-08T18:45:05.5561912Z         caller_level = 2)
2020-12-08T18:45:05.5562440Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 989, in get_subpackage
2020-12-08T18:45:05.5562757Z         caller_level = caller_level + 1)
2020-12-08T18:45:05.5563853Z       File "/opt/conda/lib/python3.6/site-packages/numpy/distutils/misc_util.py", line 926, in _get_configuration_from_setup_py
2020-12-08T18:45:05.5564215Z         config = setup_module.configuration(*args)
2020-12-08T18:45:05.5564480Z       File "skgarden/mondrian/setup.py", line 25, in configuration
2020-12-08T18:45:05.5565080Z         config.ext_modules = cythonize(config.ext_modules)
2020-12-08T18:45:05.5565735Z       File "/tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Build/Dependencies.py", line 1110, in cythonize
2020-12-08T18:45:05.5566245Z         cythonize_one(*args)
2020-12-08T18:45:05.5566843Z       File "/tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Build/Dependencies.py", line 1277, in cythonize_one
2020-12-08T18:45:05.5567320Z         raise CompileError(None, pyx_file)
2020-12-08T18:45:05.5567718Z     Cython.Compiler.Errors.CompileError: skgarden/mondrian/tree/_criterion.pyx
2020-12-08T18:45:05.5568031Z     Appending skgarden.mondrian.tree configuration to skgarden.mondrian
2020-12-08T18:45:05.5568591Z     Ignoring attempt to set 'name' (from 'skgarden.mondrian' to 'skgarden.mondrian.tree')
2020-12-08T18:45:05.5568923Z     Appending skgarden.mondrian.ensemble configuration to skgarden.mondrian
2020-12-08T18:45:05.5569692Z     Ignoring attempt to set 'name' (from 'skgarden.mondrian' to 'skgarden.mondrian.ensemble')
2020-12-08T18:45:05.5570465Z     Compiling skgarden/mondrian/tree/_tree.pyx because it depends on /tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Includes/cpython/weakref.pxd.
2020-12-08T18:45:05.5571357Z     Compiling skgarden/mondrian/tree/_splitter.pyx because it depends on /tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Includes/cpython/type.pxd.
2020-12-08T18:45:05.5572944Z     Compiling skgarden/mondrian/tree/_criterion.pyx because it depends on /tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Includes/cpython/type.pxd.
2020-12-08T18:45:05.5573841Z     Compiling skgarden/mondrian/tree/_utils.pyx because it depends on /tmp/pip-install-6sv7xy9u/scikit-garden/.eggs/Cython-3.0a6-py3.6-linux-x86_64.egg/Cython/Includes/cpython/type.pxd.
2020-12-08T18:45:05.5614691Z     [1/4] Cythonizing skgarden/mondrian/tree/_criterion.pyx

I just ran "pip install scikit-garden". I'm on python 3.6.5. From what I understand, pxd files seem to be missing from the installation package. This issue looks like this one on scikit-learn:
scikit-learn/scikit-learn#2057

Mark