On Fri, 27 Mar 2015, Akemi Yagi wrote:
> One thing that is different from EPEL is that ELRepo's el7.1 packages
> that are _not_ backward compatible will not install on systems < 7.1.
> yum will complain. My understanding is that EPEL packages do not have
> such 'Requires'.
>
Au contraire - right now, for example, I cannot install marco from EPEL:

# yum install marco
Loaded plugins: fastestmirror, langpacks, priorities
Loading mirror speeds from cached hostfile
  * epel: mirrors.rit.edu
  * sl: ftp2.scientificlinux.org
  * sl-fastbugs: ftp2.scientificlinux.org
  * sl-security: ftp2.scientificlinux.org
3 packages excluded due to repository priority protections
Resolving Dependencies
--> Running transaction check
---> Package marco.x86_64 0:1.8.3-1.el7 will be installed
--> Processing Dependency: libgtop-2.0.so.10()(64bit) for package: 
marco-1.8.3-1.el7.x86_64
--> Finished Dependency Resolution
Error: Package: marco-1.8.3-1.el7.x86_64 (epel)
            Requires: libgtop-2.0.so.10()(64bit)

libgtop-2.0.so.10 is in the libgtop2 package in 7.1.

Steve Gaarder
System Administrator, Dept of Mathematics
Cornell University, Ithaca, NY, USA
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