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Re: Hurd FS hierarchy (was Re: LD_LIBRARY_PATH troubles)

From: Niels Möller
Subject: Re: Hurd FS hierarchy (was Re: LD_LIBRARY_PATH troubles)
Date: 25 Mar 2002 12:29:55 +0100
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1

Marcus Brinkmann <> writes:

> Eventually, we should do the right thing and put each package in its
> own directory, /package/foo/ Then /bin would be the union of all
> /package/*/bin etc.

One scheme that sysadms I know have used with success is as follows:

1. Packages are installed in /i/$package/$version, e.g. gcc-3.0.3 would
   be installed with --prefix=/i/gcc/3.0.3/.

2. There's a symlink /i/$package/default that points to the
   "default" version of a package on the system. E.g. /i/gcc/default
   -> 3.0.3.

3. There are some scripts that populates directories under /usr/local
   with symlinks pointing to various files and directories under
   /i/$package/default, so that ordinary users don't need to know
   about the package system (on the Hurd, shadowfs should replace
   those scripts).

What this system does *not* address is user preferences, if different
users want different versions of a package, they have to use modules.
On the hurd they'd also have to either use something like modules, or
maintain a personal shadowfs.

You also get some ugliness with packages that already use package name
or version numbers, but for directory names further down in the tree,

     ^^^^^^^^^^       ^^^^^^^^^^
     ^^^^^^^^^^^       ^^^^^^^^^^^
     ^^^^^^^^^     ^^^                             ^^^^^


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