configure/make: Generate SAGE_ROOT/requirements-using-local-wheels.txt

[mkoeppe]

This file is for setting up a separate venv, for example for installing a stable snapshot of what is in the current source tree.

Variant 1

• just add --no-index --find-links=SAGE_ROOT/venv/var/lib/sage/wheels/ to the contents of src/requirements.txt

• adds sagelib (always source location, but not editable)

• if configure --enable-editable is in use, uses source locations (but not editable) for packages like sage_setup, sage_conf instead of wheels

Variant 1b

• if configure --enable-editable is in use, require make wheels (from GH Actions: Add test of the modularized distributions #33817)

Variant 2

• basically the output of pip freeze (@ file:/// URLs, fixed as described in sdh_store_and_pip_install_wheel: Install from the persistent wheel directory #30956)

We can also add a convenience script sage --venv /SOME/DIRECTORY for creating and populating the venv

Depends on #33817

CC: @tobiasdiez

Component: build

Issue created by migration from https://trac.sagemath.org/ticket/32616

[mkoeppe]

Changed dependencies from #32442 to #32442, #32672

[slel]

comment:8

Remove dependency on #32442, see #29039 comment:163.

[slel]

Changed dependencies from #32442, #32672 to #32672

[mkoeppe]

Changed dependencies from #32672 to #33817