Starting point pie crust
I would also mention that my wife (Judy) is gluten intolerant so where possible I will use gluten free alternatives for thickening and sauce components.
When I make a pie with this crust I will make extra filling and cook it in a Rankin for her.
The dough should also be as dry as possible. The more moisture and the more working the tougher the doe will be.
The dough will be hard to work, split, and be generally cantankerous to work with, this is the tradeoff of a flaky crust. Piece the dough in the pie shell and over the top of the pie. Be creative with cutting air vents in crust to mask piecing of top crust.