Error: conflicting requests in centos 8 package installation

Solution 1:

You can enable the powertools repository to solve this issue,

sudo yum install dnf-plugins-core
sudo yum config-manager --set-enabled powertools

Now you can install the gdal by following code,

sudo yum install gdal-devel

Installing GDAL requires both EPEL (which contains GDAL) and PowerTools (which contains some of its dependencies).

You can enable EPEL by installing its repo:

dnf -y install epel-release

PowerTools is a repo included with base CentOS. You can enable it thus:

dnf config-manager --set-enabled powertools

Now you can install GDAL successfully.