Making the following package dependency tree:


Legend:
    -------------
    req = Requires
    pro = Provides
    rec = Recommends
    sup = Supplements
    sug = Suggests
    enh = Enhances
    -------------

            +--------+
    v--rec--+ Parent +--rec--v
    |       +--------+       |
    |                        |
    v---------+    +---------v
    | Child A |    | Child B |
    +---------+    +---------+

Use the following commands to test:

    sudo yum install Parent --assumeno --disablerepo=* --repofrompath=example2,http://people.redhat.com/kwalker/weakdeps/example2/
    sudo yum install Parent --assumeno --setopt=install_weak_deps=False --disablerepo=* --repofrompath=example2,http://people.redhat.com/kwalker/weakdeps/example2/

Output:

    # sudo yum install Parent --assumeno --disablerepo=* --repofrompath=example2,http://people.redhat.com/kwalker/weakdeps/example2/                                                                                   
    
    Updating Subscription Management repositories.
    Added example2 repo from http://people.redhat.com/kwalker/weakdeps/example2/
    example2                                                                               911  B/s | 1.1 kB     00:01
    Dependencies resolved.
    =======================================================================================================================
     Package                    Arch                       Version                      Repository                    Size
    =======================================================================================================================
    Installing:
     Parent                     x86_64                     0.1-1                        example2                     6.1 k
    Installing weak dependencies:
     ChildA                     x86_64                     0.1-1                        example2                     6.0 k
     ChildB                     x86_64                     0.1-1                        example2                     6.0 k
    
    Transaction Summary
    =======================================================================================================================
    Install  3 Packages
    
    Total download size: 18 k
    Installed size: 0
    Operation aborted.
    
    
    # sudo yum install Parent --assumeno --setopt=install_weak_deps=False --disablerepo=* --repofrompath=example2,http://people.redhat.com/kwalker/weakdeps/example2/                                                  
    Updating Subscription Management repositories.
    Added example2 repo from http://people.redhat.com/kwalker/weakdeps/example2/
    Last metadata expiration check: 0:00:21 ago on Tue 19 Feb 2019 01:17:25 PM EST.
    Dependencies resolved.
    =======================================================================================================================
     Package                    Arch                       Version                      Repository                    Size
    =======================================================================================================================
    Installing:
     Parent                     x86_64                     0.1-1                        example2                     6.1 k
    
    Transaction Summary
    =======================================================================================================================
    Install  1 Package
    
    Total download size: 6.1 k
    Installed size: 0
    Operation aborted.