error installing boilerplate

[eldawwy]

What's going on?

error installing boilerplate
✖ ignite-hydrogen is not available on npm.

---

Environment

ignite doctor results:

``

results here

`System
  platform           darwin                                                
  arch               x64                                                   
  cpu                12 cores     Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz 
  directory          Desktop      /Users/mahmoudhamdy/Desktop              

JavaScript
  node               15.5.1       /usr/local/bin/node 
  npm                7.3.0        /usr/local/bin/npm  
  yarn               -            not installed       

Ignite
  ignite-cli         3.5.3        /Users/mahmoudhamdy/.npm/_npx/d73c6e55621d3944/node_modules/.bin/ignite      
  ignite src         build        /Users/mahmoudhamdy/.npm/_npx/d73c6e55621d3944/node_modules/ignite-cli/build 
  generators                                                                                                   

Android
  java               1.8.0_282    /usr/bin/java 
  android home       -            undefined     

iOS
  xcode              12.3       
  cocoapods          1.10.1       /usr/local/bin/pod `

Steps to reproduce

1. ignite new app -b hydrogen

What Happens (aka "Actual Results")

Different boilerplates are no longer supported in Ignite v4+.
To use the old CLI to support different boilerplates, try:
npx ignite-cli@3 new app --boilerplate hydrogen

npx ignite-cli@3 new app --boilerplate hydrogen

✖ ignite-hydrogen is not available on npm.
We also searched in these directories:

What is Expected

install ignite-hydrogen boilerplate