[pacman-dev] base system install and scriptlets

[Dan McGee]

On 10/5/07, Aaron Griffin <aaronmgriffin at gmail.com> wrote:
> On 10/5/07, Xavier <shiningxc at gmail.com> wrote:
> > On Thu, Oct 04, 2007 at 10:37:36PM +0200, Xavier wrote:
> > > Anyway, the scriptlets won't be able to run at all until a base system is installed.. But that's another problem :
> > > http://www.archlinux.org/pipermail/pacman-dev/2007-August/009148.html
> >
> > Hmm, one thing I forgot to ask about this :
> > does anyone know how the Arch installer handle this?
> >
> > It doesn't install all packages twice, does it?
> > Or maybe sh and its dependencies don't have any scriptlets?
> > Or if they do, maybe they can be first installed with --noscriptlet, and
> > then only install everything?
> > That is :
> > 1) pacman -S --noscriptlet bash
> > 2) pacman -S base
>
> Last night Dan and I went through this.
>
> Firstly, we manually ensured the deps for install scriptlets.
> Secondly, I made libalpm succeed but complain loudly if /bin/sh is
> missing for a package that has a scriptlet.
>
> There's not much we can do beyond that besides ensuring this stuff
> manually - perhaps a namcap rule to make sure bash is somehow in the
> dep chain if an install script is present?

Aaron, a few issues I thought of today:
1. Your check looks for /bin/sh in the current environment, not the
install-root environment. This should be fixable by snprintf-ing the
root path to /bin/sh and checking if that exists.
2. Although bash doesn't have an install script, it does have other
deps that DO have an install script. Bash depends on the following
(when all deps are resolved):
kernel-headers, glibc (install file), ncurses (install file),
readline(install file)

The best way to resolve these issues would be to have some sort of
staticly compiled sh...but I don't know if that is practical. Anyone
have some ideas for this situation? It sounds like we can't use the
--root parameter correctly to install a base system without either
installing twice as was stated above.

-Dan