[Bug 242614] MK/Uses/python.mk: remove ill conceived range deduction routine

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242614

            Bug ID: 242614
           Summary: MK/Uses/python.mk: remove ill conceived range
                    deduction routine
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Keywords: patch, patch-ready
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected], [email protected]
                CC: [email protected], [email protected]

Created attachment 209903
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=209903&action=edit
MK/Uses/python.mk: remove ill conceived range deduction routine

On a fresh build/install of world/kernel on RELENG 11.3
I was unable to complete a build of many meta-ports. The
failure was invariably due to python *version* errors. I
spent the better part of 2 days attempting to overcome these,
before bringing it up on the mailing list. Where I was
directed to a couple related pr(1)s (noted in see also).
Through these, I was able to deduce the cause of these (build)
failures.
I made a modification to Mk/Uses/python.mk and everything
built as intended/expected. Please find the svn(1) diff(1)
attached; that contains the necessary changes.

ENV:
Relative URL: ^/releng/11.3
Repository Root: svn://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 355580

URL: svn://svn.freebsd.org/ports/head
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 519768

pkg delete -a
cd /usr/ports/ports-mgmt/pkg
make; make deinstall && make reinstall clean

tests on:
/usr/ports/x11/xorg or /usr/ports/graphics/mesa-dri
will all fail with python version related errors

FIX:
pkg delete -a
cd /usr/ports/ports-mgmt/pkg
make; make deinstall && make reinstall clean
cd /usr/ports && apply the patch attached to this pr(1)
everything builds as expected.

PROBLEM:
A conditional was added to Mk/Uses/python.mk attempting to
deduce a range of acceptable (python) versions for the build
targets. But fails to accomplish it's intended goal. Resulting
in the inability to build many ports with python dependencies.

CURE:
Remove the offending subroutine.

That's it!

Special thanks to the following:
Jan Beich for pointing me to related PRs on the mailing list
Walter Schwarzenfeld, for the initial insight pr237795#comment 18
Antoine Brodin, for his of the "clue bat" pr233723#Comment 7

Thanks!

--Chris

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