[MacPorts] howto/InstallingOlderPort modified

[MacPorts]

Page "howto/InstallingOlderPort" was changed by david at rothlis.net
Diff URL: <https://trac.macports.org/wiki/howto/InstallingOlderPort?action=diff&version=15>
Revision 15
Comment: Instructions for specifying a subport (e.g. py27-pylint)
Changes:
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Index: howto/InstallingOlderPort
=========================================================================
--- howto/InstallingOlderPort (version: 14)
+++ howto/InstallingOlderPort (version: 15)
@@ -92,4 +92,13 @@
 
 After this, php5 version 5.2.10 should be installed.
 
+== Specifying a subport ==
+
+Many python libraries, for example, have separate ports for different python versions, but a single port file to describe them all. To specify which version you want, use "subport=...". For example:
+
+{{{
+cd dports/python/py-pylint
+sudo port install subport=py27-pylint
+}}}
+
 [wiki:howto <- Back to the HOWTO section]
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