Set an environment variable from an api response in the plugin

[klquam]

Is it possible to use the node module https within a plugin and assign a response object to cypress.env.MY_FEATURES? I haven't run across any examples so far and everything I have tried does not appear in the settings when cypress opens. Example as follows(v7.5 but also unsuccessful in v10):

cypress.json
experimentalInteractiveRunEvents: true

cypress/plugins/index.js

const https=require('https')

module.exports = (on, config) => {
   config.env.MY_FEATURES = {}

   https.get('https://123.456.78.9/some/endpoint.json', (res) => {
      let body = ''
      res.on('data', (chunk) => (body += chunk));
      res.on('end', () => { config.env.MY_FEATURES = JSON.parse(body) }
   }).on('error', (e) => {
      console.log(e)
   }).end();
}

I have also tried wrapping the https call in a promise and calling it like so:

getFeatures()
   .then((res) => {
      config.env.MY_FEATURES = res
   });