[scl.org] Removing 'scls' from %{_sysconfdir} and %{_localstatedir}?

[Lubos Kardos]

Have a look at bug #1066665 especially at comment 8.

Lubos

----- Original Message -----
> From: "Honza Horak" <hhorak at redhat.com>
> To: sclorg at redhat.com, "Lubos Kardos" <lkardos at redhat.com>
> Cc: "Lukas Zachar" <lzachar at redhat.com>, "Petr Splichal" <psplicha at redhat.com>, "Jan Zelený" <jzeleny at redhat.com>
> Sent: Thursday, February 26, 2015 1:02:36 PM
> Subject: Removing 'scls' from %{_sysconfdir} and %{_localstatedir}?
> 
> Latest scl-utils define the following paths if %{nfsmountable} macro is
> defined:
> 
>    %{_sysconfdir}    expands to /etc/opt/<vendor>/scls/<sclname>
>    %{_localstatedir} expands to /var/opt/<vendor>/scls/<sclname>
> 
> (see the 'scls' part) but the rest files don't use 'scls', e.g.:
> 
>    %{_bindir}        expands to /opt/<vendor>/<sclname>
> 
> (no 'scls' in the path).
> 
> I've heard a serious critic of this *inconsistency* today from our QE --
> using 'scls' under /etc/opt and /var/opt, but not in /opt. And I admit I
> agree with them, even though I haven't paid much attention to that
> inconsistency before.
> 
> This 'scls' part probably comes from the Fedora draft [1], but realize
> that in that draft 'scls' is also used under /opt/<vendor>.
> 
> I can't find any reasoning for this 'scls' directory, I can only assume
> it was used to distinguish SCL technology from other possible
> technologies utilizing /opt in the future.
> 
> My opinion is we don't need this distinguishing at all.
> 
> Software Collections are just a delivery mechanism, to place files into
> a unique structure, separated based on the *collection name*. If we
> don't need to separate SCLs by any 'scl' keyword on RPM packages names
> (i.e. we don't call collections with scl-colname, at least not now), we
> don't need to do it on filesystem level either.
> 
> On the other hand, if we find out in the future, that this
> distinguishing is necessary, we'll need to do it not only in the files
> paths, but also in the RPM names, so the 'scl' would need to be used in
> the collection name itself.. At any case, 'scls' should be removed from
> the paths /etc/opt/ and /var/opt/.
> 
> [1] http://fedoraproject.org/wiki/User:Toshio/SCL_Guidelines_%28draft%29
> 
> Honza
>