jpm/pm/out-of-tree-config

    function
    /usr/local/lib/janet/jpm/pm.janet on line 356, column 1

    (out-of-tree-config path &opt options)

    Create an out of tree build configuration. This lets a user have a 
    debug or release build, as well as other configuration on a one 
    time basis. This works by creating a new directory with a 
    project.janet that loads in the original project.janet file with 
    some settings changed.