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If you don’t own a Windows license but you still need to build / test the app on Windows, you can use the free virtual machines provided by Microsoft, either in VirtualBox or any of the hypervisors supporting the available VM file formats.

The following assumes you run commands from an administrator command prompt

To get an administrator prompt, look for Command Prompt in the start menu, right-click on it and select Run as administrator.

FIXME: Document scoop instead of choco (it works far better).

Once you are in a running Windows session, you can eventually install Chocolatey from an administrator prompt, then use it to install the requirements above (or you can download and install each of the installers):

choco install git
choco install nodejs-lts
choco install yarn

Right now the nodejs-lts package seems to be broken, you may need to install the latest Node 6.x by hand.

You may also need at some point to restart the Command Prompt, the whole system, or refresh your environment variables using therefreshenv command.

Then install the Windows build tools from an admin console as documented in the Microsoft’s Node.js guidelines:

npm install -g windows-build-tools

You may still need to manually add the python installation directory to your PATH. To do so, search for PATH from the start menu and select Edit environment variables for your account. Then edit the PATH user variable (not the system one) and append the following to the end (assuming ... is the current text):


To set up Docker, in case you hardware is old or you don’t own a Windows Pro license, you may encounter the same issue as on old macOS hardware (see below). (please feel free to improve this section)


You need a Mac to build / test for macOS.

The easiest way to set up the environment is to install and use Homebrew:

brew install git
brew install node@8
brew install yarn

To install Docker, first check that your mac has kernel hypervisor support:

sysctl -n kern.hv_support

If the output is 1, then you can install the latest Docker version:

brew cask install docker

Otherwise you’ll have to install a Docker VM and set up your shell environment so the various docker commands know how to use it (you can omit the default parameters below):

brew cask install docker-toolbox
docker-machine create default
eval $(docker-machine env default)

Fedora 28

sudo wget -O /etc/yum.repos.d/yarn.repo
sudo dnf install docker gcc-c++ git nodejs yarn transifex-client python3-pip
sudo pip install docker-compose
sudo groupadd docker
sudo usermod -aG docker $USER # Restart your session so this takes effect


curl -sS | sudo apt-key add -
echo "deb stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
curl -fsSL | sudo apt-key add -
sudo add-apt-repository \
 "deb [arch=amd64] $(lsb_release -cs) stable"
sudo apt update
sudo apt install git nodejs build-essential gcc transifex-client icnsutils graphicsmagick python3-pip docker-ce yarn
sudo pip install docker-compose
sudo groupadd docker
sudo usermod -aG docker $USER # Restart your session so this takes effect

Set up a Cozy stack

If you don’t already have a running Cozy stack, the easiest way to get started is to use Docker & docker-compose:

docker-compose up
yarn bootstrap

Cozy Stack

You can run any command in the cozy-stack docker container with the yarn docker:exec script, e.g.:

yarn docker:exec apt-get update
yarn docker:exec apt-get install git  # So we can install cozy apps

You can also run any cozy-stack command with the yarn cozy-stack script, e.g.:

yarn cozy-stack apps install --domain cozy.localhost:8080 drive 'git://'

Complete your setup

See ./