Re: Integrating GRC-Generated Python Code into Python Virtual Environment

[Marcus Müller]

Hi Hamza,

it's great that you ask the mailing list! Because I've already replied to you in chat, I 
think it's a good idea to echo what I wrote there here, so that people will find an answer 
when they look for answers in the future:

If you want the system-installed GNU Radio to be available in your virtual 
environment,

python3 -m venv --system-site-packages

sets up your virtual environment in a way that allows access to the system-wide python 
modules.

This is necessary, because numpy, pyqt, … as used by GNU Radio during built must be 
ABI-compatible. You must not install a different version of these libraries in the virtual 
environment!

Best regards,
Marcus

On 6/8/25 8:01 AM, Hamza Mohammed wrote:
> Hello all,
>
> I'm currently working on a standalone FM receiver Python application and would like to 
> integrate a GNU Radio Companion (GRC) flow graph—specifically, FM receiver that I've 
> already built and verified to work correctly.
>
> However, I'm unsure about the best approach to use the Python code generated by GRC within 
> a Python virtual environment. My goal is to cleanly integrate the flow graph functionality 
> into my application's codebase, ideally without relying on a system-wide GNU Radio 
> installation.
>
> So far, I’ve considered a couple of possible options:
>
>  1.
>
>     *Creating symbolic links* from my virtual environment to the 
> system-installed GNU
>     Radio libraries and Python modules.
>
>  2.
>
>     *Using Conda* to install GNU Radio directly within a self-contained 
> environment,
>     avoiding the need for system-wide dependencies.
>
> Before I go too far down either path, I wanted to ask you guys.