?S: is useful if $prefix is shared by many packages, e.g. if
?S: $prefix=/usr/local.
?S:
+?S: Unfortunately, while this "style" variable is used to set
+?S: defaults for all three directory hierarchies (core, vendor, and
+?S: site), there is no guarantee that the same style is actually
+?S: appropriate for all those directories. For example, $prefix
+?S: might be /opt/perl, but $siteprefix might be /usr/local.
+?S: (Perhaps, in retrospect, the "lib" style should never have been
+?S: supported, but it did seem like a nice idea at the time.)
+?S:
+?S: The situation is even less clear for tools such as MakeMaker
+?S: that can be used to install additional modules into
+?S: non-standard places. For example, if a user intends to install
+?S: a module into a private directory (perhaps by setting PREFIX on
+?S: the Makefile.PL command line), then there is no reason to
+?S: assume that the Configure-time $installstyle setting will be
+?S: relevant for that PREFIX.
+?S:
?S: This may later be extended to include other information, so
?S: be careful with pattern-matching on the results.
?S: