Arguably, dnf error messages are deficient in this case, because  a simple 'dnf -y update' just says 'Skip  17 Packages...Nothing to do' without much explanation.

Just wanted to mention that the usual trick of erasing the blocking package (polymake) doesn't  really work here, because too many packages depend on it (many pyton and python2 packages, as well as gap, sage, ocaml and several other: altogether 89 packages comprising 831MB). This is a pretty serious block---could the packagers please do something about it?

I think the problematic lines in polymake.spec are:

Requires:       perl(:MODULE_COMPAT_%{perl_version})
Requires:       perl = 4:%{perl_version}

Doesn't Fedora rpmbuild not find the required dependencies automatically, so these lines are unnecessary?

https://fedoraproject.org/wiki/Packaging:Guidelines#Package_dependencies
https://fedoraproject.org/wiki/Packaging:Perl#Perl_Requires_and_Provides

After reading the wiki pages I think these lines should be replaced by

Requires:  perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))

These wrong dependencies also break kickstart installation of Fedora 25 when the %packages section contains at least one of the lines

@engineering-and-scientific --optional
polymake

(because the group contains polymake as optional package)

together with at least one of

@editor --optional
vim-X11
vim-enhanced
@mate-desktop
@milkymist
@security-lab

which requires vim-common-2:7.4.1989-2.fc25.x86_64 which conflicts with vim-minimal-2:8.0.206-1.fc25.x86_64. vim-minimal is a mandatory package of group core.

See bug #1416518 .

The strict dependency is on purpose. See bug #963486. Polymake maintainer know about the necessity to rebuild the package.

*** Bug 1416952 has been marked as a duplicate of this bug. ***

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