feat(builder): consolidate expression construction #1181

Job	Run time
Detect matrix mode	7s
Wait for quality and unit checks	2m 4s
Build standard pure Python wheel	0s
Test ${{ matrix.os }} py${{ matrix.python-version }}	0s
Build MyPyC wheels (${{ matrix.os }} py${{ matrix.python-version }})	0s
Build source distribution	0s
Verify package integrity	0s
	2m 11s

Provide feedback