networkEditor.setCursorPosition(hou.Vector2(0,0))
origin = QCursor.pos()

{
    "env": [
            {
            "MYPROJECT_PATH": 
                [
                    { "$houdini_dev == '0'" : "/global/path" },
                    { "$houdini_dev == '1'" : "/dev/path" }
                ]
            },
            {
            "TOOLS_PATH": "/my/other/path"
            }
           ]
}

### RETURNS REFERENCES FROM A GIVEN NODE ###
### Ignores the references inside a hda, as they are considered self contained ###
def getReferences(node):

    references = []

    if isNodeHDA(node):
        references = list(node.references(include_children=False))

        ### Removes children if referenced in the hda ###
        for reference in references:
            if isNodeChildOf(reference,node):
                references.remove(reference)
    else:
        references = node.references(include_children=True)

    references = list(set(references))

    ### Removes the node if it references itself ###
    if node in references:
        references.remove(node)

    return references

### RETURNS ALL DEPENDENCIES FOR A GIVEN NODE
def getAllDependencies(nodes, level=0, maxdepth=10):

    dependencies = []

    if level == maxdepth:
        return dependencies

    for node in nodes:
        references = getReferences(node)

        ## for each reference, get ancestors
        for reference in references:
            ancestors = reference.inputAncestors(include_ref_inputs=True,only_used_inputs=False)
            newDependencies = getAllDependencies(ancestors,level+1,maxdepth)
            newDependencies.append(reference)

            for dependency in newDependencies:
                if dependency not in dependencies:
                    dependencies.append(dependency)

    result = []
    for dependency in dependencies:
        if dependency not in nodes:
            result.append(dependency)

    return result