[Bug Report] Building wheel for gym (setup.py) ... error

[wbc23]

Describe the bug
Building wheel for gym (setup.py) ... error

System Info
My python version is 3.7.3，My linux version is Ubuntu18.04

The bug info is：
Building wheels for collected packages: gym
Building wheel for gym (setup.py) ... error
error: subprocess-exited-with-error

× python setup.py bdist_wheel did not run successfully.
│ exit code: 1
╰─> [481 lines of output]

Traceback (most recent call last):
File "", line 36, in
File "", line 34, in
File "/tmp/pip-install-ghwoed05/gym_e92a96bf7ac54dd59edd31213e4aa557/setup.py", line 74, in
"Programming Language :: Python :: 3.9",
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/init.py", line 87, in setup
return distutils.core.setup(**attrs)
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/_distutils/core.py", line 185, in setup
return run_commands(dist)
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
dist.run_commands()
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/_distutils/dist.py", line 968, in run_commands
self.run_command(cmd)
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/dist.py", line 1217, in run_command
super().run_command(command)
File "/usr/local/python3.7/lib/python3.7/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
cmd_obj.run()
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/bdist_wheel.py", line 395, in run
self.egg2dist(self.egginfo_dir, distinfo_dir)
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/bdist_wheel.py", line 534, in egg2dist
pkg_info = pkginfo_to_metadata(egginfo_path, pkginfo_path)
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/metadata.py", line 160, in pkginfo_to_metadata
for key, value in generate_requirements({extra: reqs}):
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/metadata.py", line 138, in generate_requirements
for new_req in convert_requirements(depends):
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/metadata.py", line 103, in convert_requirements
parsed_requirement = Requirement(req)
File "/usr/local/python3.7/lib/python3.7/site-packages/wheel/vendored/packaging/requirements.py", line 37, in init
raise InvalidRequirement(str(e)) from e
wheel.vendored.packaging.requirements.InvalidRequirement: Expected end or semicolon (after version specifier)
opencv-python>=3.
~~~^
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for gym
Running setup.py clean for gym
Failed to build gym

[pseudo-rnd-thoughts]

pip install setuptools == 66 or modify the setup.py file to fix the issue

[heiheiheibj]

I'm getting the same error, it's not a setuptools version problem, it's a configuration error.
Look carefully, opencv-python>=3.
There is no number after 3. just change it to 3.0 or 3

[HelloCentaurus]

I'm getting the same error, it's not a setuptools version problem, it's a configuration error. Look carefully, opencv-python>=3. There is no number after 3. just change it to 3.0 or 3

Where can I find this file and modify it?

[heiheiheibj]

I couldn't find the location of the configuration file, so i used a very inelegant way to modify the code and solved this problem. [doge]
Modify /usr/local/python3.7/lib/python3.7/site-packages/wheel/vendored/packaging/requirements.py

`
def init(self, requirement_string: str) -> None:

    try:

        if requirement_string.find('opencv-python>=3.')>=0:

            requirement_string += "0"    # opencv-python>=3.0

        parsed = parse_requirement(requirement_string)

`

[HelloCentaurus]

I couldn't find the location of the configuration file, so I did a very dumb solution. Modify /usr/local/python3.7/lib/python3.7/site-packages/wheel/vendored/packaging/requirements.py

` def init(self, requirement_string: str) -> None:

    try:

        if requirement_string.find('opencv-python>=3.')>=0:

            requirement_string += "0"    # opencv-python>=3.0

        parsed = parse_requirement(requirement_string)

`

Anyway, this method helped me solve the problem. Thank you very much!

[JakobThumm]

Alternatively,

pip install git+https://github.com/openai/gym.git@9180d12e1b66e7e2a1a622614f787a6ec147ac40

installs gym==0.21 with the typo opencv-python>=3. fixed.

[saulfield]

This appears to be because of a change with wheel. Using wheel==0.38.4 worked for me.

[pseudo-rnd-thoughts]

In my case I just had to replace the gym== version being installed to gym, and the most recent version works, I guess.

Be aware that there are major api changes with the latest version compared to v0.21