Acme is a programmer's text editor, shell, and user interface. It runs on a virtualized operating system, Inferno, that runs hosted on Windows, Linux, Solaris, and MacOSX.

See this video for a nice walk through of Acme: https://www.youtube.com/watch?v=dP1xVpMPn8M

You can build the limbo source tree from inside acme:

    % cd /appl/ 
    % mk install

To build the acme runtime emu follow these steps on the host command line

    % ./makemk.sh
    % mk install

The mk command will build all the C libraries and inferno emulator.