Clean up build/install after #17607

[jdemeyer]

Instead of creating totally new package types like python2standard, adding the following lines in build/install is sufficient to implement #17607:

if [ "$SAGE_PYTHON3" = yes ]; then
    echo >&5 'PYTHON = $(PYTHON3)'
else
    echo >&5 'PYTHON = $(PYTHON2)'
fi

Depends on #17607

CC: @ohanar @vbraun @nathanncohen

Component: build

Author: Jeroen Demeyer

Branch/Commit: 7e5095c

Reviewer: Nathann Cohen

Issue created by migration from https://trac.sagemath.org/ticket/18517

[jdemeyer]

Dependencies: #17607

[jdemeyer]

Branch: u/jdemeyer/clean_up_build_install_after__17607

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

7e5095c

Use $MAKE instead of make

[sagetrac-git]

Commit: 7e5095c

[nathanncohen]

comment:5

Looks good to me. Should we rename the packages from python to python2 and from Python to python3 in this ticket?

Nathann

[jdemeyer]

comment:6

Replying to @nathanncohen:

Should we rename the packages from python to python2 and from Python to python3 in this ticket?

I prefer not.

[nathanncohen]

comment:7

I prefer not.

I don't see why, but so be it.

Nathann

[nathanncohen]

Reviewer: Nathann Cohen

[vbraun]

Changed branch from u/jdemeyer/clean_up_build_install_after__17607 to 7e5095c