(a) This subchapter does not apply to an action of the department for which a contractor is entitled to a specific remedy pursuant to state or federal constitution or statute.(b) This subchapter does not apply to contracts:(1) between the department and the federal government or its agencies, another state or another nation;(2) between two or more units of state government;(3) between the department and a local governmental body, or a political subdivision of another state;(4) between a subcontractor and a contractor;(5) subject to §201.112 of the Transportation Code;(6) within the exclusive jurisdiction of state or local regulatory bodies;(7) within the exclusive jurisdiction of federal courts or regulatory bodies; or(8) that are solely and entirely funded by federal grant monies other than for a project defined in §1.1803 of this title (relating to Definitions);