Cannot find the file specified when installing from source

[AkgunOnur]

Dear Team,

I am encountering challenges while installing a library from its source. I have diligently followed the provided installation steps.

git clone git@github.com:openai/procgen.git
cd procgen
conda env update --name procgen --file environment.yml
conda activate procgen
pip install -e .
# this should say "building procgen...done"
python -c "from procgen import ProcgenGym3Env; ProcgenGym3Env(num=1, env_name='coinrun')"

Upon completion, I received the message: "Successfully installed procgen-0.10.7+5e1dbf3". However, upon executing the command python -c "from procgen import ProcgenGym3Env; ProcgenGym3Env(num=1, env_name='coinrun')", I encounter an error: "FileNotFoundError: [WinError 2] The system cannot find the file specified".

I have attempted installations across various conda environments, utilizing Python versions 3.7, 3.8, and 3.9, yet the issue persists. Could you please provide guidance on the appropriate steps to address this?

PS: When I install the library using the command pip install procgen, the library works without any issues. However, for my specific requirements, it is imperative to install the library from its source in order to make necessary modifications to the provided environments.

Best regards,
Onur

[myndrws]

Hi @AkgunOnur - were you able to resolve this issue in the end? I'm experiencing a similar one.

[AkgunOnur]

Unfortunately, I could not solve it

[myndrws]

No worries.

In case it's useful to you or anyone else, I solved it by:

1. Editing cmake_prefix_paths directly in function _attempt_configure to point at Library/lib/cmake directory within my conda environment.
2. Editing conda_prefix in the same function to point at my env/Library folder (not library - capital L)
3. Making sure I edited the generator variable to specifically name my version of Visual Studio (i.e. 16 2019, not 15)

I'm using Windows so can't comment on whether this should work for other platforms.