Hello Lawrence,

> On 13 Oct 2016, at 16:49, Lawrence Velázquez <lar...@macports.org> wrote:
> Hello,
>> On Oct 13, 2016, at 7:30 AM, Björn Raupach <raup...@me.com> wrote:
>> At first I assumed it sets the default symlink for the command in
>> /usr/bin
> MacPorts almost never touches /usr.
> The "port select" command creates symlinks under $prefix, according to
> rules specified by the relevant *_select port. For instance,
> python_select (used by "port select --set python") creates these files:
> https://trac.macports.org/browser/trunk/dports/sysutils/python_select/files/base
> <https://trac.macports.org/browser/trunk/dports/sysutils/python_select/files/base>

thanks for the explanation about what select does

>> select —summary
>> Name     Selected     Options
>> ====     ========     =======
>> awscli   py34-awscli  py34-awscli none
>> maven    maven3       maven3 none
>> mysql    mysql56      mysql56 none
>> pip      none         none
>> python   none         python26-apple python27-apple python34 none
>> python3  none         python34 none
>> Why is python in more than one group?
> The python, python2, and python3 groups are distinct from one another
> and install different symlinks. This is an attempt to adhere to PEP 394
> as best we can.
> https://trac.macports.org/browser/trunk/dports/sysutils/python2_select/files/base
> https://trac.macports.org/browser/trunk/dports/sysutils/python3_select/files/base
> https://www.python.org/dev/peps/pep-0394
>> If I call python from the command line it launches the python3.4 even
>> though port select shows that none is selected.
>> port select —set python python34 yields an error: Selection ‘python34’ for 
>> ‘python’ failed: symlink: /opt/local/etc/select/python/current -> python34: 
>> file already exists.
> This problem was brought up previously on this list. You may have
> uninstalled python34 at some point while it was selected; the "port
> select" code doesn't handle this properly and leaves dangling symlinks.
> Can you run this and tell us what it returns? (If you see any messages
> about permissions, run it again with "sudo".)
>       $ find -L /opt/local -type l


Yes. I have played around with MacPorts and probably messed it up myself. I 
doesn’t harm anything. I was just curious.

Thanks for helping out!


> vq

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