Cannot install it correctly on macOS Big Sur

[varosi]

After installing the library via PlatfromIO on Visual Studio Code and when I try to build the project I get:

ModuleNotFoundError: No module named 'asn1crypto':
  File "/Users/home/.platformio/penv/lib/python3.8/site-packages/platformio/builder/main.py", line 170:
    env.SConscript("$BUILD_SCRIPT")
  File "/Users/home/.platformio/packages/tool-scons/scons-local-4.0.1/SCons/Script/SConscript.py", line 598:
    return _SConscript(self.fs, *files, **subst_kw)

I have already installed asn1crypto globally, but it's strange that this is a some other environment. My Python is 3.9, not 3.8.
Is it possible this library to auto-install asn1crypto where is needed during installation process in Visual Studio Code?

[varosi]

The same happen on Windows also.

[maxgerhardt]

Just open a PIO terminal and do a pip3 install asn1crypto -- PIO is running in it's own isolated penv

[varosi]

And this is the result:
Requirement already satisfied: asn1crypto in /usr/local/lib/python3.9/site-packages (1.4.0)

This still doesn't help.

[maxgerhardt]

Requirement already satisfied: asn1crypto in /usr/local/lib/python3.9/site-packages (1.4.0)
File "/Users/home/.platformio/penv/lib/python3.8/site-packages/platformio/builder/main.py", line 170:

You're still using your global 3.9 installation and not the isolated 3.8 installation of PlatformIO.

Try it this way in a normal terminal:

cd /Users/home/.platformio/penv/Scripts
./activate
./pip3 install asn1crypto

[varosi]

There is no "Scripts" folder there.

[maxgerhardt]

How did you install PlatformIO? Via the CLI first or just with the VSCode plugin?

[varosi]

VSCode plugin

[varosi]

There is /Users/home/.platformio/penv/ but without "Scripts". In "bin" folder there is "activate", but it's not executable.

[maxgerhardt]

Is a pip3 executable file in this folder with which you can do ./pip3 install asn1crypto?

[maxgerhardt]

Okay please post the output of pio system info when executed in a PIO terminal.

Otherwise you can try to replace this line

esp8266-iot-framework/scripts/preBuildCertificates.py

Line 7 in 4ef80a1

from asn1crypto.x509 import Certificate

with

try:
    from asn1crypto.x509 import Certificate
except ImportError:
    env.Execute(
        env.VerboseAction(
            '$PYTHONEXE -m pip install "asn1crypto" ',
            "ASN1 crypto import failed, installing.",
        )
    )

and try building twice (first to catch error + install, second to actually execute)

[varosi]

It worked! At least continued with the compilation.

Thanks a lot!
It could be easier I guess if the installation process of the library include that dependency automatically.

[maxgerhardt]

I've proposed that in PR #71 :)

However, this should also be equivalent of executing pio system info, copying the value of the Python Executable entry and then appending -m pip install asn1crypto to it and executing it in a shell.

[maakbaas]

@maxgerhardt Thanks for supporting, and for the pull request. Indeed automatic installation of this dependency (and others) was already on my list for some time. I appreciate it!