Opa with Vagrant
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Install vagrant and run
vagrant init mlstate/opa
The box is a linux system running in a VM that contains a pre-built Opa system with all dependencies. Once the box is created, run:
vagrant up vagrant ssh
to start the VM and log into it.
Test your setup
Opa is installed and in user path, so you can just run
opa file.opa ./file.js
to compile and run an Opa program. Note that tutorials are preinstalled in your home directory.
Note: to see the actual output in your host browser, you need to do some port forwarding in Virtual-box. Click on your machine > settings > network > port forwarding. Then add a new rule with the following information: Name: Opa, Protocol: tcp, Host port: 8080, Guest port: 8080. Leave the other fields blank. You can now see your application in your host browser on http://localhost:8080/
If you're new to vagrant, note that the host directory is mounted under
/vagrant in the VM, so you can leave Opa programs in your host and just keep a console in the VM to compile and run your apps.
If you run your application and get the following message. 1 Module missing. Please run: sudo npm install -g ursa. You might need to first need to perform these commands:
sudo apt-get install nodejs and
sudo apt-get install npm
before you can run
sudo npm install -g ursa