Mryntu

I wish to add a custom home page layout in Magento 2.

In Magento 1, it's very simple, i create my module :

<?xml version="1.0"?>
<config>
 <modules>
 <Vendor_Custom>
 <codePool>local</codePool>
 <active>true</active>
 </Vendor_Custom>
 </modules>
</config>

and i create a config.xml

<?xml version="1.0"?>
<config>
 <global>
 <page>
 <layouts>
 <custom_home_page>
 <label>Custom Home Page</label>
 <template>page/home.phtml</template>
 </custom_home_page>
 </layouts>
 </page>
 </global>
</config>

It's possible to do something similar in Magento 2?

Create layouts.xml following location:

[namespace]/[modulename]/view/frontend/layouts.xml

Content should be

<?xml version="1.0" encoding="UTF-8"?>
<page_layouts xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/PageLayout/etc/layouts.xsd">
 <layout id="homepage">
 <label translate="true">Custom Homepage</label>
 </layout>
</page_layouts>

Create your new custom page layout (ex: homepage.xml) following location:

[namespace]/[modulename]/view/frontend/page_layout/homepage.xml

Content should be well structure page layout. So in your case copy of existing page layout into your custom page layout. All page layouts locate:

magento/module-theme/view/frontend/page_layout/*

Use 1st answer for page layout updates, but change locations:

For layouts.xml move it to

app/design/[Theme_Vendor]/[Theme_name]/Magento_Theme/ 

For homepage.xml move it to

app/design/[Theme_Vendor]/[Theme_name]/Magento_Theme/page_layout/ 

I've tried 1st answer example but it didn't work.