尝试安装 snapd 但给出“冲突请求”错误

Question

I am trying to install snapd but giving this error.

Operating System - Red Hat Enterprise Linux release 8.6 (Ootpa)

Error: 
 Problem: package snapd-2.57.6-2.el8.x86_64 requires snapd-selinux = 2.57.6-2.el8, but none of the providers can be installed
  - conflicting requests
  - nothing provides selinux-policy >= 3.14.3-108.el8 needed by snapd-selinux-2.57.6-2.el8.noarch
  - nothing provides selinux-policy-base >= 3.14.3-108.el8 needed by snapd-selinux-2.57.6-2.el8.noarch
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Answer 1

I have the same problem. There's a long discussion about this here: https://forum.snapcraft.io/t/trouble-installing-snapd-on-rhel-8/13140/2 . It looks like the only way to do it, if you can install all the necessary build tools, is to build from sources, as one of the posts there suggests.(I couldn't do it on my system because it's having subscription management issues.)

I also tried using CR repository, as suggested in the instructions for CentOS here: https://snapcraft.io/docs/installing-snap-on-centos , but that didn't work for me, either (I guess it's really just for CentOS and not RHEL).

UPDATE:

I finally found a solution (where there's a will...), I manually installed all the requirements, one by one, that weren't available in the epel-release repo. My process was the following:

wget https://rpmfind.net/linux/centos/8-stream/BaseOS/x86_64/os/Packages/rpm-4.14.3-19.el8.x86_64.rpm
wget https://rpmfind.net/linux/centos/8-stream/BaseOS/x86_64/os/Packages/rpm-libs-4.14.3-19.el8.x86_64.rpm
wget https://dl.rockylinux.org/pub/rocky/8/BaseOS/aarch64/os/Packages/s/selinux-policy-3.14.3-108.el8.noarch.rpm

sudo rpm -i --force rpm-4.14.3-19.el8.x86_64.rpm
sudo rpm -i --force rpm-libs-4.14.3-19.el8.x86_64.rpm
sudo rpm -i --force selinux-policy-3.14.3-108.el8.noarch.rpm

sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/libsemanage-2.9-9.el8.x86_64.rpm --allowerasing
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/python3-libsemanage-2.9-9.el8.x86_64.rpm
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/policycoreutils-2.9-19.el8.x86_64.rpm
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/python3-policycoreutils-2.9-19.el8.noarch.rpm
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/policycoreutils-python-utils-2.9-19.el8.noarch.rpm
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/selinux-policy-minimum-3.14.3-108.el8.noarch.rpm
sudo yum install http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/Packages/libseccomp-2.5.2-1.el8.x86_64.rpm

sudo yum update snapd

Or, if you're installing from scratch:

sudo yum install snapd-2.57.6-2.el8.x86_64

It's conceivable that I've left something out in that list, or perhaps that on your system something else will be missing. If you run into an error telling you that nothing provides package XYZ, you can find it here: https://centos.pkgs.org/8-stream/centos-baseos-x86_64/ and simply sudo yum install directly from the binary package URL; eg:

That's exactly what my process was, and here's what I have now:

$ cat /etc/redhat-release                                                                                                                                                                                                                                                                                                                                                                                          (base)
Red Hat Enterprise Linux release 8.2 (Ootpa)
$ snap --version                                                                                                                                                                                                                                                                                                                                                                                                   (base)
snap    2.57.6-2.el8
snapd   2.52.1
series  16
rhel    8.2
kernel  4.18.0-193.6.3.el8_2.x86_64