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Amritanshu c13047e812 Fix: Check if moved/merged kots could lead to negative products of a situation where happy hour products were more than regular products.
Case:
  Kot 1:
    Beer Mug => 2 regular, 2 happy hour
  Kot 2:
    Beer Mug => 2 Regular
  Kot 3:
    Beer Mug => -2 Regular

Then move Kot 2 to new table would leave the voucher with 2 hh and 0 regular
Also, just move did not check if products were going negative.
2023-03-24 10:17:06 +05:30
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barker Fix: Check if moved/merged kots could lead to negative products of a situation where happy hour products were more than regular products. 2023-03-24 10:17:06 +05:30
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Installation on Ubuntu 14.04

Prepare the system

  1. Install system-wide pip Currently the ensurepip is broken in Python 3.4 / Ubuntu 14.04, therefore we need to install system-wide pip
sudo apt-get install python3-pip
  1. Install postgresql
sudo apt-get install postgresql postgresql-client pgadmin3

Full Guide

  1. Configure the server and set password
sudo -u postgres psql postgres
\password postgres
  1. Install components to build psycopg2
sudo apt-get install libpq-dev python3-dev

Setup the virutal environment

  1. Create the virtual environment Currently the ensurepip is broken in Python 3.4 / Ubuntu 14.04, therefore --without-pip is needed.
pyvenv-3.4 env --without-pip --system-site-packages
  1. Activate the virtual environment
source env/bin/activate
  1. Install pyramid, sqlachemy, psycopg2 and other dependencies:
python3 -m pip install pyramid waitress sqlalchemy zope.sqlalchemy psycopg2