The root of an Avail Project is located in the same directory where the Avail project file is located.
At a minimum an Avail project must be created with at least one Avail Module Root.
An Avail Project can optionally have any number of roots added; one of which may be an Avail Standard Library that can be found in ~/.avail/libraries/org/availlang/
Create a new Avail project using IntelliJ's new project creation wizard.
An Avail project is defined by an Avail Project File. An example of an Avail Project file can be found here.
~/.avail
.~/
~/.avail/libraries
~/.avail/repositories
~/.avail/libraries/org/availlang/
Anvil project creation is done via this dialog.