[MacPorts] #34326: Python ports do not adhere to PEP 394 and provide "python2" and "python3"

[MacPorts]

#34326: Python ports do not adhere to PEP 394 and provide "python2" and "python3"
-------------------------------------------------+-------------------------
  Reporter:  mikko@…                             |      Owner:  larryv@…
      Type:  enhancement                         |     Status:  closed
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.0.4
Resolution:  fixed                               |   Keywords:
      Port:  python_select python24 python25     |
  python26 python27 python31 python32 python33   |
  python34                                       |
-------------------------------------------------+-------------------------
Changes (by larryv@…):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 These should do it. Thanks to Ned Deily for upstream-flavored feedback.
 - [136723] — Allow ports to easily install multiple select files.
 - [136741,136743,136745] — Create `python2` select group for Python 2.6
   and 2.7.
 - [136748:136749] — Create `python3` select group for Python 3.3–3.5.

 Selecting the default Python 2 and 3 works just like selecting the
 default Python always has. The three groups are independent: Changing
 one selection does not affect the others.

 View your options:
 {{{
 % port select --list python
 Available versions for python:
         none (active)
         python24
         python26
         python26-apple
         python27
         python27-apple
         python31
         python32
         python33
         python34
         python35
 % port select --list python2
 Available versions for python2:
         none (active)
         python26
         python26-apple
         python27
         python27-apple
 % port select --list python3
 Available versions for python3:
         none (active)
         python33
         python34
         python35
 }}}

 Make selections:
 {{{
 % sudo port select --set python python26
 Selecting 'python26' for 'python' succeeded. 'python26' is now active.
 % sudo port select --set python2 python27-apple
 Selecting 'python27-apple' for 'python2' succeeded. 'python27-apple' is
 now active.
 % sudo port select --set python3 python35
 Selecting 'python35' for 'python3' succeeded. 'python35' is now active.
 }}}

 As you’d expect:
 {{{
 % /opt/local/bin/python -V
 Python 2.6.9
 % /opt/local/bin/python2 -V
 Python 2.7.6
 % /opt/local/bin/python3 -V
 Python 3.5.0b1
 }}}

 The links vary by group and port. To see which links are being created,
 look at the debug output:
 {{{
 % sudo port -d select --set python3 python34
 DEBUG: Copying /Users/larryv/Library/Preferences/com.apple.dt.Xcode.plist
 to /opt/local/var/macports/home/Library/Preferences
 DEBUG: action_select [python3 python34] [ports_source_only yes
 ports_select_set yes]...
 DEBUG: The 'set' command was specified.
 DEBUG: mportselect [set] [python3] [python34]
 DEBUG: ln -sf /opt/local/bin/python3.4 /opt/local/bin/python3
 DEBUG: ln -sf /opt/local/bin/python3.4m /opt/local/bin/python3m
 DEBUG: ln -sf /opt/local/bin/python3.4-32 /opt/local/bin/python3-32
 DEBUG: rm -f /opt/local/bin/pythonw3
 DEBUG: rm -f /opt/local/bin/pythonw3-32
 DEBUG: ln -sf /opt/local/bin/python3.4-config
 /opt/local/bin/python3-config
 DEBUG: ln -sf /opt/local/bin/python3.4m-config /opt/local/bin/python3m-
 config
 DEBUG: ln -sf /opt/local/bin/idle3.4 /opt/local/bin/idle3
 DEBUG: ln -sf /opt/local/bin/pydoc3.4 /opt/local/bin/pydoc3
 DEBUG: ln -sf /opt/local/bin/2to3-3.4 /opt/local/bin/2to3-3
 DEBUG: ln -sf /opt/local/bin/pyvenv-3.4 /opt/local/bin/pyvenv
 DEBUG: ln -sf /opt/local/share/man/man1/python3.4.1
 /opt/local/share/man/man1/python3.1
 Selecting 'python34' for 'python3' succeeded. 'python34' is now active.
 DEBUG: Checking time since last reclaim run
 }}}

 We are in the process of removing the `python{24,25,31,32}` ports, so
 they are not available as choices for the new `python2` and `python3`
 groups.

 As usual, run `sudo port selfupdate` to receive these changes. Please
 open a new ticket to report bugs or request enhancements.

-- 
Ticket URL: <https://trac.macports.org/ticket/34326#comment:37>
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