PyNaCl building problems - python-3.x

Question

So I'm trying to download discord's API into my venv with pip but it's failing to build PyNaCl. It says that the error is that the 'make' utility is missing from PATH but I just added it in my environment variables and tried running it on cmd to make sure it's properly installed. Any ideas on what could be causing the issue?
I'm running windows 10, python 3.9.1, and pip 20.3.3
Here is the error message:
Note: I can perfectly install the discord module without voice support, however, I want to make use of its voice features and I cannot understand why it's failing to install.

Answer 1

'make' utility is missing from PATH
The cause of this error
This error is caused by a BUG in setup.py of PyNacl source code.
However, even if you fix it, you will encounter more problem since that source code does not intend for building on windows.
If you just want to install PyNacl, see the next section.
If you want to know the detail of that BUG, see the last section.
Installing PyNacl
After Sep 14, 2020, pynacl has abi3 pre-built wheel, so pip install pynacl will automatically download and install it. You don't need to build pynacl by yourself.
You can also manually download
PyNaCl-1.4.0-cp35-abi3-win_amd64.whl and pip install PyNaCl-1.4.0-cp35-abi3-win_amd64.whl (in download dir).
If you get an error, you can use pip install -U pip to upgrade pip and try again.
If you still get an error, you can use pip debug -v to check compatible tags:
If the compatible tags have the "win_amd64" postfix, there should be a "cp35-abi3-win_amd64" tag, and pip install should succeed.
If the compatible tags have the "mingw_x86_64" or "mingw_x86_64_ucrt" postfix, you must build pynacl by yourself (or install win_amd64 python).
pynacl lists libsodium as a dependency. Fortunately, you don't need to build libsodium (which needs make, causing the error you encountered).
You can download pre-built libsodium from https://download.libsodium.org/libsodium/releases/.
download: https://download.libsodium.org/libsodium/releases/libsodium-1.0.18-stable-mingw.tar.gz
unzip .gz (you can use 7-zip or peazip) and copy the directories ("bin", "lib", "include") in /libsodium-1.0.18-stable-mingw.tar/libsodium-win64 to your mingw installation directory(which also contain "bin", "lib", "include")
finally, use bash (such as git bash): SODIUM_INSTALL=system pip install pynacl.
Then pip will use PEP517 to build and install pynacl for you with pre-built libsodium. Or, you can build by yourself (download the source code from pypi, and in the source code directory):
SODIUM_INSTALL=system python setup.py bdist_wheel
With cmd or powershell, you cannot set environment variable in the bash style. You can use following instead:
$env:SODIUM_INSTALL="system";pip install pynacl
Details of the bug
The error is raised here:
if not which("make"):
raise Exception("ERROR: The 'make' utility is missing from PATH")
And the function which is implemented with a BUG:
def which(name, flags=os.X_OK): # Taken from twisted
result = []
exts = filter(None, os.environ.get('PATHEXT', '').split(os.pathsep))
path = os.environ.get('PATH', None)
if path is None:
return []
for p in os.environ.get('PATH', '').split(os.pathsep):
p = os.path.join(p, name)
if os.access(p, flags):
result.append(p)
for e in exts:
pext = p + e
if os.access(pext, flags):
result.append(pext)
return result
In Python3, filter returns an iterator, not a list (python2's filter returns a list). Thus, the "exts" will be "exhausted" in the first iteration. You can replace filter(...) with list(filter(...)) to fix it.