Whisk the flour, pastry sugar, and salt in a large bowl. Add the cold butter and cut it into the flour with a pastry blender or cool fingertips until most pieces are pea-sized, with a few thin flakes remaining. Drizzle in 45 ml of ice water and toss with a fork. Add the remaining water 1 teaspoon at a time only until a squeezed handful holds together. Press into a disk, wrap, and refrigerate for 45 minutes.
Set the chilled dough on a lightly floured work surface and roll it from the center outward into a 12-inch circle about 1/8 inch thick, rotating frequently to prevent sticking. Transfer it to a 9-inch metal pie plate without stretching the dough. Ease it into the corners, trim the overhang to 1 inch, then fold and crimp the edge. Refrigerate the shaped shell for 15 minutes while positioning a rack in the lower third of the oven.
Preheat the oven to 375°F with a rimmed baking sheet inside; the hot sheet helps conduct heat directly into the bottom crust. Line the chilled shell with crumpled and flattened parchment, making sure it reaches the pastry edge. Fill completely with pie weights or dry beans so the sides cannot slump. Set the pie plate on the hot baking sheet carefully, keeping the crimped edge clear of the weights.
Bake the weighted shell at 375°F for 20 minutes, until the crimp looks set and no longer raw. Lift out the parchment and weights, then prick the bottom several times with a fork without piercing completely through the plate. Return the crust to the baking sheet and bake for 8 to 10 minutes, until the base appears dry and shows light golden patches. Cool on a wire rack for 10 minutes while preparing the filling.
Lower the oven to 350°F, leaving the baking sheet in place. In a medium bowl, whisk the pumpkin, brown sugar, granulated sugar, cornstarch, cinnamon, ginger, nutmeg, cloves, and filling salt until smooth and evenly colored. Add the eggs one at a time, whisking gently after each addition until no white streaks remain. Slowly whisk in the evaporated milk and vanilla. Scrape the bowl with a spatula, then stir rather than vigorously beating to limit bubbles.
Pour the filling into the warm crust and pop any large surface bubbles with a toothpick. Transfer the pie to the hot baking sheet and bake at 400°F for 15 minutes, then reduce the oven to 350°F without opening the door. Continue baking for 35 to 45 minutes. The outer 2 inches should be puffed and set, while the center should wobble as one piece rather than ripple. An instant-read thermometer inserted near the center should register 175°F to 180°F.
Move the pie plate to a wire rack and cool at room temperature for 4 hours, away from drafts. The center will settle and finish firming as the egg proteins and starch cool, so slicing early can produce a loose wedge even when the pie is fully baked. Once completely cool, loosen any caramelized filling from the edge with a thin knife. Slice with a clean sharp knife, wiping the blade between cuts, and serve at room temperature or lightly chilled.