@vercel/fun/dist/src/install-python.js

Local Lambda development environment

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.generatePythonTarballUrl = generatePythonTarballUrl;
exports.installPython = installPython;
const tar_1 = require("tar");
const node_fetch_1 = __importDefault(require("node-fetch"));
const debug_1 = __importDefault(require("debug"));
const node_zlib_1 = require("node:zlib");
const promises_1 = require("node:stream/promises");
const debug = (0, debug_1.default)('@vercel/fun:install-python');
function generatePythonTarballUrl(version, platform = process.platform, arch = process.arch) {
    return `https://python-binaries.zeit.sh/python-${version}-${platform}-${arch}.tar.gz`;
}
async function installPython(dest, version, platform = process.platform, arch = process.arch) {
    // For Apple M1 use the x64 binaries
    if (platform === 'darwin' && arch === 'arm64') {
        arch = 'x64';
    }
    const tarballUrl = generatePythonTarballUrl(version, platform, arch);
    debug('Downloading Python %s tarball %o', version, tarballUrl);
    const res = await (0, node_fetch_1.default)(tarballUrl);
    if (!res.ok) {
        throw new Error(`HTTP request ${tarballUrl} failed: ${res.status}`);
    }
    debug('Extracting Python %s tarball to %o', version, dest);
    await (0, promises_1.pipeline)(res.body, (0, node_zlib_1.createGunzip)(), (0, tar_1.extract)({ strip: 1, C: dest }));
}
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