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Building

Use these instructions to run Omission from the repository. These should work in nearly all cases.

If you run into trouble, contact support@mousepawmedia.com

Windows 7 and later

  1. Download the latest Python 3 Release and install it on your computer. Choose Customize Installation, use the defaults on the first page, and additionally check Add Python to Environment Path on the second page.

  2. Open your command prompt by searching for the program cmd.

Future sections that look like this
should be typed in command prompt,
followed by the ENTER key.
(Don't type this one in.)
  1. Upgrade pip, the Python package tool.
python -m pip install --upgrade pip wheel setuptools

NOTE: If you get an error about 'api-ms-win-crt-runtime-l1-1-0.dll', make sure your computer is up-to-date.

  1. Install appdirs using pip:
python -m pip install appdirs
  1. Install Kivy's dependencies.
python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew kivy.deps.gstreamer
  1. Install Kivy itself.
python -m pip install kivy

  1. Download the .zip for Omission and put it directly on the C: drive. Right-click the file, click "Extract All", and follow the instructions.

  2. In your command prompt, we'll start Omission.

cd C:\omission-master\omission-master
python -m omission

Every time you want to run Omission again, open a command prompt and follow ONLY step 8 again!

macOS/Mac OS X 10.7.5 Lion or later

We'll be using Macports to set up our Python environment.

  1. Install Xcode from your App Store. If it reports that your system is too old, you can download the version for your OS from developer.apple.com/download.

  2. Download Macports for your operating system from the MacPorts website. Install it on your system.

  3. Open the Terminal application, which is under Utilities.

Future sections that look like this
should be typed in the Terminal,
followed by the ENTER key.
(Don't type this one in.)
  1. Install Python 3.6, and set it as your new default. We'll do the same for pip, Python's package installer.
sudo port install python36
sudo port select --set python python36
sudo port install py36-pip
sudo port select --set pip pip36
  1. Install the dependencies for Kivy.
sudo port install libsdl2 libsdl2_image libsdl2_ttf libsdl2_mixer
pip install -U Cython
pip install Pillow pygame
  1. Install Kivy.
pip install kivy
  1. Install appdirs.
pip install appdirs

  1. Download the .zip for Omission. We'll leave it in Downloads for convenience. In your Finder, double-click it to unzip it.

  2. In your Terminal, we'll start Omission.

cd ~/Downloads/omission-master; python -m omission

Every time you want to run Omission again, open a Terminal and follow ONLY step 9 again!

Linux

  1. Open the Terminal application.
Future sections that look like this
should be typed in the Terminal,
followed by the ENTER key.
(Don't type this one in.)
  1. Make sure Python 3 and virtualenv are installed. On a Debian-based system, run...
sudo apt-get update
sudo apt-get install python3 virtualenv
  1. Install Kivy's system dependencies. On a Debian-based system, you can run...
sudo apt-get install ffmpeg libsdl2-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-ttf-dev libportmidi-dev libswscale-dev libavformat-dev libavcodec-dev zlib1g-dev libgstreamer1.0 gstreamer1.0-plugins-base gstreamer1.0-plugins-good
  1. Ensure you are in the Omission repository directory, and run the Makefile:
make

The output directory is /dist/Omission.

  1. To start Omission from your Terminal, run the following from within the Omission repository...
dist/Omission/Omission