filesystem hierarchy

[Jeremy C. Reed]

>     I would personally like pkgsrc to have the ability to install multiple
>     versions of a package, but that is support that the pkgsrc people would
>     have to add, not us.

That feature existed a couple years ago. It is called "pkgviews". And I 
used it myself. It was experimental and not widely used. Over the past 
year, some changes broke it. (I don't know what.) Nobody noticed (at least 
nobody publicly mentioned it) until I reported it a month or two ago.

I think the support for installing multiple versions of a package will be 
coming back soon.

As it is now, someone can easily have multiple PKG_DBDIR (default 
/var/db/pkg) and LOCALBASE (default /usr/pkg) to have multiple 
installations of same package. Some pkgsrc users already use that. And 
just adjust symlinks to /usr/pkg and/or adjust users' PATH (and MANPATH) 
as needed. The minor problem is you may have multiple copies of identical 
dependencies.