installing multiple copies of macports

[Jon Hermansen]

I'm not running two MacPorts installs, but you should be able to switch
between separate installations by just calling 'port' out by path, e.g.:

/opt/local1/bin/port install mysql5-server
/opt/local2/bin/port install apache2

Only network services will conflict when they both try to claim a port (or
ports), however, this is typically configurable from within the MacPorts
prefix for the installation, so for Apache, you could have the stock Apple
apache run on port 80, and run your two MacPorts-installed Apaches on ports
81 and 82.

I do not know if MacPorts applications will use /var/run to store process
information (this is the only foreseeable place IMO you could have a
problem). Hopefully they would use ${prefix}/var/run, but you're always
welcome to check the Portfiles / try to run both in parallel and find out if
there is an issue.

On Fri, Oct 22, 2010 at 11:55 AM, Marko Käning <MK-MacPorts at techno.ms>wrote:

> Section 2.3.4 (
> http://guide.macports.org/#installing.macports.source.multiple) of the
> manual explains how multiple macports installations can be created, but I
> cannot see a hint as to how these have to be set up in such a way that one
> can easily switch between these copies.
>
> I can imagine that some services might get started for a specific macports
> installation, which would have to be shut down in some controlled manner
> before the alternative installation can be put into action.
>
> Anyone out there who has such a setup actually in place and could give a
> hint?
>
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