On Tue, Nov 05, 2013 at 04:34:47PM +0100, Honza Horak wrote: > On 11/01/2013 08:28 PM, Toshio Kuratomi wrote: > >A straw poll was taken about the filesystem location of SCLs. A few FPC > >members were willing to use /opt but others were heavily opposed to it. > >Everyone was okay with using /usr/scl (or the plural form /usr/scls). So > >I think that needs to become the scl root dir (is that the right term?) for > >Fedora. > > > >FPC was okay with the idea that third parties might use /usr/scl as well. > >I didn't bring this up at the meeting but one thing that influences me on > >this is that scls are inherently rpm managed and therefore mixing both our > >scls with third party scls does not seem like the same vendor-OS problem > >that /opt was designed to fix. > > I feel the need to add my POV about choosing /usr/scl for SCL prefix. > FHS states: "/usr is the second major section of the filesystem. /usr > is shareable, read-only data. That means that /usr should be > shareable between various FHS-compliant hosts and must not be written > to. Any information that is host-specific or varies with time is > stored elsewhere." [1] > > That seems to me like a no-go for having /usr/scl as a prefix for > SCLs, because there surely are packages that need to write some > files, probably not only databases. So I'd also vote for /opt since > there are no such requirements. > > [1] http://www.pathname.com/fhs/pub/fhs-2.3.html#THEUSRHIERARCHY > Although I favor /opt, this is not one of the reasons. Our interpretation of /opt is that we also cannot depend on it being read-write and host-specific. It looks like fhs developed /opt to be a vendor-friendly version of /usr. Therefore it is also read-only and shareable. The reasoning stems from FHS's decision to separate read-write and host-specific information from /opt: """ Package files that are variable (change in normal operation) must be installed in /var/opt. See the section on /var/opt for more information. Host-specific configuration files must be installed in /etc/opt. See the section on /etc for more information. """ http://www.pathname.com/fhs/pub/fhs-2.3.html#OPTADDONAPPLICATIONSOFTWAREPACKAGES As stated in my Filesystem Location Part 2 email: https://lists.fedoraproject.org/pipermail/packaging/2013-November/009717.html "we also noted that no matter whether /usr or /opt was used, config files would still need to be placed somewhere under /etc and state files somewhere under /var." -Toshio
Attachment:
pgp9As0q3IMSB.pgp
Description: PGP signature
-- packaging mailing list packaging@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/packaging
