[Fedora-packaging] Packaging guidelines for Emacsen add-on packages

Tom "spot" Callaway tcallawa at redhat.com
Wed May 30 13:09:35 UTC 2007


On Wed, 2007-05-30 at 09:47 +0300, Ville Skyttä wrote:
> On Wednesday 30 May 2007, Tom "spot" Callaway wrote:
> > On Wed, 2007-05-30 at 00:26 +0100, Jonathan Underwood wrote:
> > > On 27/05/07, Ville Skyttä <ville.skytta at iki.fi> wrote:
> > > > Regarding the current Emacsen add-on draft,
> > > >
> > > > * Added some more info about requiring a version of (X)Emacs newer than
> > > > or equal to the one used to compile the *.elcs, and how to find that
> > > > version out dynamically during package build.
> > >
> > > Actually, I was just testing this, and it doesn't work.
> > >
> > > You added these macros:
> > > %define emacsversion v=$(rpm -q --qf=%%{VERSION} emacs) ; case $v in
> > > 2*) echo $v ;; *) echo 0 ;; esac
> > >
> > > %define xemacsversion v=$(rpm -q --qf=%%{VERSION} xemacs) ; case $v in
> > > 2*) echo $v ;; *) echo 0 ;; esac
> >
> > Good lord. No. Thou shalt not query rpm inside rpm.
> 
> Disagreed, when done carefully.

There is no careful way to do it. It is not safe, it is not predictable,
it is not reproducable.

emacs --version | head -n1 | sed -e 's/[^0-9.]//g'
xemacs -V -no-site-file | cut -d " " -f 2

Not that hard.

~spot




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