9.4 repository depends on EPEL?

Greetings.

I'm installing 9.4beta3 on a fresh CentOS 6.5 (minimal) install.

I've done the following:

1. rpm -ihv
http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-centos94-9.4-1.noarch.rpm

2. Added `exclude=postgresql*` to the `/etc/yum.repos.d/CentOS-Base.repo,
sections [base] and [updates]

3. Executed `yum install vim screen kernel-devel gcc man -y`
Needed for VBox Guest Additions

4. Executed `yum install postgresql94-server postgresql94-contrib
postgresql94-client -y`
and `yum install barman repmgr -y`

Finally, I run `yum install postgis2_94` and I get the following:

Error: Package: postgis2_94-2.1.3-1.rhel6.x86_64 (pgdg94)
Requires: libjson.so.0()(64bit)
Error: Package: postgis2_94-2.1.3-1.rhel6.x86_64 (pgdg94)
Requires: json-c
Error: Package: postgis2_94-client-2.1.3-1.rhel6.x86_64 (pgdg94)
Requires: libgdal.so.1()(64bit)
Error: Package: postgis2_94-2.1.3-1.rhel6.x86_64 (pgdg94)
Requires: libgdal.so.1()(64bit)
Error: Package: postgis2_94-2.1.3-1.rhel6.x86_64 (pgdg94)
Requires: hdf5

My search shows, that packages `json-c` and `hdf5` are provided by EPEL.

Is having EPEL enabled on a system is a prerequisite?

--
Victor Y. Yegorov