Function installRequirements

electron/main/python-setup.ts:222–270

(
  pythonExe: string,
  requirementsPath: string,
  win: BrowserWindow
)

}

function installRequirements(
  pythonExe: string,
  requirementsPath: string,
  win: BrowserWindow
): Promise<void> {
  const TOTAL_PACKAGES = 20
  return new Promise((resolve, reject) => {
    console.log('[PythonSetup] Installing requirements with', pythonExe)
    const proc = spawn(
      pythonExe,
      ['-m', 'pip', 'install', '-r', requirementsPath, '--no-warn-script-location', '--progress-bar', 'off'],
      { stdio: ['ignore', 'pipe', 'pipe'], env: cleanPythonEnv() }
    )
    let packagesInstalled = 0
    const onLine = (line: string) => {
      console.log('[pip]', line)
      let currentPackage: string | undefined
      const collectMatch = line.match(/^Collecting (.+?)(?:\s|$)/)
      if (collectMatch) { packagesInstalled++; currentPackage = collectMatch[1] }
      const downloadMatch = line.match(/^Downloading (.+?)(?:\s|$)/)
      if (downloadMatch) currentPackage = `Downloading ${downloadMatch[1]}…`
      const percent = Math.round(20 + (packagesInstalled / TOTAL_PACKAGES) * 79)
      win.webContents.send('setup:progress', {
        step: 'packages',
        percent: Math.min(percent, 99),
        currentPackage,
      })
    }
    let buffer = ''
    proc.stdout?.on('data', (d: Buffer) => {
      buffer += d.toString()
      const lines = buffer.split('\n')
      buffer = lines.pop() ?? ''
      lines.forEach((l) => onLine(l.trim()))
    })
    proc.stderr?.on('data', (d: Buffer) => {
      const text = d.toString().trim()
      if (text) console.error('[pip]', text)
    })
    proc.on('close', (code) => {
      if (code === 0) {
        win.webContents.send('setup:progress', { step: 'packages', percent: 100 })
        resolve()
      } else {
        reject(new Error(`pip install exited with code ${code}`))
      }
    })
  })
}

// ─── Unix dev helper ─────────────────────────────────────────────────────────