libgmp10 has no file conflicts with older libgmp (from p6), but the rpm formally obsoletes older libgmp. If libgmp10 didn't obsolete libgmp (for example, from p6), then ti would be possible to upgrade some individual packages from p7 (or Sisyphus) in a p6 system. I could do the following as a workaround: rpm -ihv libgmp10-5.1.2-alt1.i586.rpm echo 'RPM::Allow-Duplicated { "libgmp"; };' > /etc/apt/apt.conf.d/libgmp-compat.conf Now: # rpm -qa 'libgmp*' libgmp-4.3.2-alt3 libgmp-devel-4.3.2-alt3 libgmp10-5.1.2-alt1 # (What was the use of this? After that, I was able to install ghc and rpm-build-haskell from p6 (or t6), and then switch to p7, and: apt-get install rpm-build-haskell ghc7.6.1 pandoc without touching the rest of the system. Then, I could even switch to Sisyphus and apt-get install pandoc Ultimately, I have installed the new versions of pandoc without touching much of the rest of the system: # rpm -q rpm-build-haskell ghc7.6.1 pandoc rpm-build-haskell-1-alt23 ghc7.6.1-7.6.1-alt5 pandoc-1.11.1-alt1 #
Correction: instead of echo 'RPM::Allow-Duplicated { "libgmp"; };' > /etc/apt/apt.conf.d/libgmp-compat.conf it's better to put a more precise pattern there: echo 'RPM::Allow-Duplicated { "^libgmp$"; };' > /etc/apt/apt.conf.d/libgmp-compat.conf
Fixed gmp-5.1.2-alt2 is being copied from Sisyphus to p7.
Thanks! Now it's OK in p7, too.
