I'd like to add a template to show project's description when in project.task kanban view.

I've found that there are templates like KanbanView.buttons, ~.Group, ~.LoadMore.

I guess there should be somewhere to append those templates into kanban view but unfortunately, I cannot find it.

What I did is

my_template.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <templates>
            <t t-name="eric-kanban-view">
                <div>This is Eric's kanban view</div>
            </t>
        </templates>
    </data>
</openerp>

project.xml

<record id="project_task_custom_kanban" model="ir.ui.view">
    <field name="inherit_id" ref="project.view_task_kanban"/>
    <field name="model">project.task</field>
    <field name="arch" type="xml">
        <xpath expr="//templates" position="before">
            <t t-call="eric-kanban-view"/>
        </xpath>
    </field>
</record>

But nothing happened.