Adding support for LEFT JOINs and IS NULL conditions to Drupal's EntityFieldQuery has been asked for in d.o. issue queues and discussed over and over again. Although in Drupal 8 EntityFieldQuery has been rewritten, and now supports exists() and notExists() conditions, implementing it in Drupal 7 is still slightly hack-ish. Doing it in dynamic, parametrisable way however seems to be something new entirely.

Recently in Development

If you happen to have Commerce Stock module enabled, while at the same time you have removed Commerce Line Item: Delete button field from your Shopping cart form view, you most probably faced (or are still facing) some PHP warning and notices when using any of the shopping cart buttons.
Akeneo
Akeneo is an open source Product Information Management (PIM) system designed for retailers looking for efficient answers to their multichannel needs. Platform.sh is a groundbreaking hosting and development tool for web applications. It extends a branch-merge workflow to infrastructure so that every branch can be tested as if it were in production, and scales for the largest sites.
The Tower of Babel By Pieter Brueghel
Step-by-step guide to translating a Commerce Kickstart 2-based store, including multilingual products and search.
Don't Drink Poison by Carissa Rose Stevens
Ever got an invitation to one of those "fancy" Microsoft Office Live Meetings, only to end up scratching your head how the heck could you access it from your Mac? Especially if you were running Mavericks?
Mexican Marketplace by Anne Gifford
This tutorial will guide you through all the steps required to replicate the Commerce Marketplace demo site on your own server, and then explain how its behaviour differs depending on various configuration settings.

Recent commits

search_api_et_solr526a98810 Feb
Issue #2294641 by dshields: PHP notices about ->options['clean_ids']
facebook_pixel34a043f10 Feb
Issue #2663676 by Marcin Maruszewski: Missing parameters on ViewContent event
xmlsitemap_views98394374 Feb
Initial working version
xmlsitemap_views357dab84 Feb
Initial commit.
commerce_adsa0dd8dd12 Jan
Refactored API call logs, added admin settings to enable full response logging
commerce_ads1442c0b12 Jan
Added API call to fetch order delivery information

Maciej on drupal.org