electron-builder: /bin/sh command not found after building MacOS

• Electron-Builder Version: 24.6.4

• Node Version: 20.5.1

• Electron Version: 26.2.1
• Electron Type (current, beta, nightly): current

• Target: MacOS

Seems to be related to #6726 in some way.

I’m trying to run some pip commands from my electron app using exec

(but same/similar issue with spawn and execa module as well)

Steps to reproduce:

1. create project using template https://github.com/electron-react-boilerplate/electron-react-boilerplate
2. Add this code in the main process (make sure to import exec and dialog correctly). You also need python installed for this (which I have installed in /Users/codergautam/.pyenv/shims/pip)

  // Run pip list command and show output in dialog
  exec('pip list', (err, stdout, stderr) => {
    console.log(stdout);
    console.log(stderr);
    if (err) {
      dialog.showErrorBox('Pip List Error', inspect(err));
      return;
    }
    dialog.showMessageBoxSync({
      title: 'Pip List',
      message: stdout.substring(0, 200),
    });
  });

1. Run it using npm start, see the trimmed list of packages correctly
2. Build it using npm run package then run the built app, you will get error:

Error: Command failed: pip list
/bin/sh: pip: command not found

at ChildProcess.exithandler (node:child_process:430:12)
at ChildProcess.emit (node:events:513:28)
at maybeClose (node:internal/child_process:1091:16)
at Socket.<anonymous> (node:internal/child_process:449:11)
at Socket.emit (node:events:513:28)
at Pipe.<anonymous> (node:net:322:12) {
code: 127,
killed: false,
signal: null,
cmd: 'pip list'
}

Image:

I think for some reason it’s trying to run the python 2.7 stuff which was removed. This is a major blocker, any way to fix?