[Bug 1436961] New: xmonad-mate: Programs started from menus don' t have access to ssh-agent

https://bugzilla.redhat.com/show_bug.cgi?id=1436961

Bug ID: 1436961
           Summary: xmonad-mate: Programs started from menus don't have
                    access to ssh-agent
           Product: Fedora
           Version: 25
         Component: xmonad
          Severity: medium
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail]

Description of problem:

When using XMonad with MATE, programs which use ssh internally don't seem to be
able to access the ssh-agent, and request passwords unexpectedly.  The same
programs started from a terminal are able to access the ssh-agent and don't
request passwords.

Version-Release number of selected component (if applicable):

xmonad-mate-0.12-2.fc25.x86_64
ghc-xmonad-0.12-2.fc25.x86_64
openssh-clients-7.4p1-4.fc25.x86_64
mate-session-manager-1.16.1-1.fc25.x86_64

How reproducible:

100%

Steps to Reproduce:
1. Start xmonad-mate session
2. Open a terminal and add a key with ssh-add
3. From the MATE menus, run a program which uses ssh internally, such as
vinagre (with proxy through SSH enabled) or virt-manager (with a qemu+ssh
connection to the backend)
4. Attempt to connect to a host where you have ssh public key authorization

Actual results:

Program prompts for a password on the remote host.

Expected results:

Connects without password, using the key already given to the ssh-agent.

Additional info:

Running the same program (e.g. vinagre or virt-manager) from a terminal behaves
as expected, using the key in the agent to connect without further
authentication.