You can order a prebuilt mutantC-v3 (not officially)

A project log for mutantC v2 - A HandHeld for everything

A Raspberry pi UMPC. An open platform device to use and fit your project .It is fully open-source hardware. So you can hack it as you wish

rahmanshaberrahmanshaber 09/25/2020 at 17:010 Comments

As mutantC is a open source hardware and I am not capable to supply you guys one by tindy or other way, so kwlodraczyk took the job to supply you guys one by his own. 

I saw this post in Reddit and that made me so glad so I wanted to shear.