<div class="gmail_quote">On Tue, Aug 30, 2011 at 15:56, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com">knepley@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":2qk">Distros have LOTS of manpower</div></blockquote><div><br></div><div>I'm not sure I agree. The major distros have lots of people involved in core aspects (a handful might even get paid), but they have tens of thousands of community-maintained packages. They have to make the job of packaging easy in order to have the community maintain so many packages. A lot of those packages do upstream updates more frequently than most scientific libraries.</div>
<div><br></div><div>The part of the problem that is harder for PETSc is that there is more variability in the environment we are installing into. The distros can assume a certain set of base tools that work in a consistent way, where as we need to be very careful about depending on anything.</div>
<div><br></div><div>Figuring out how to do a DESTDIR install is specific to a package, not specific to the environment in which the install is taking place, therefore it is no harder for us than for the (volunteer contributor to the) distros.</div>
<div><br></div><div>Sandboxing the compile/install or setting system permissions (e.g. via fakeroot) would be harder for PETSc to do (because it's different on different systems).</div></div>