Plugin indexes are a great way to have your plugins discovered by other users. Plugin indexes make it easy for other Tutor users to install and upgrade plugins from other developers. Examples include the official indexes, which can be found in the overhangio/tpi repository.
Index file paths
A plugin index is a yaml-formatted file. It can be stored on the web or on your computer. In both cases, the index file location must end with “<current release name>/plugins.yml”. For instance, the following are valid index locations if you run the Open edX “Palm” release:
To add either indexes, run the
tutor plugins index add command without the suffix. For instance:
tutor plugins index add https://overhang.io/tutor/main tutor plugins index add /path/to/your/local/index/
Your plugin cache should be updated immediately. You can also update the cache at any point by running:
tutor plugins update
To view current indexes, run:
tutor plugins index list
To remove an index, run:
tutor plugins index remove <index url>
Plugin entry syntax
A “plugins.yml” file is a yaml-formatted list of plugin entries. Each plugin entry has two required fields: “name” and “src”. For instance, here is a minimal plugin entry:
- name: mfe src: tutor-mfe
A plugin name is how it will be referenced when we run
tutor plugins install <name> or
tutor plugins enable <name>. It should be concise and easily identifiable, just like a Python or apt package name.
Plugins with duplicate names will be overridden, depending on the index in which they are declared: indexes further down
tutor plugins index list (which have been added later) will have higher priority.
A plugin source can be either:
A pip requirement file format specifier (see reference).
The path to a Python file on your computer.
The URL of a Python file on the web.
In the first case, the plugin will be installed as a Python package. In the other two cases, the plugin will be installed as a single-file plugin.
The following “src” attributes are all valid:
# Pypi package src: tutor-mfe # Pypi package with version specification src: tutor-mfe>=42.0.0,<43.0.0 # Python package from a private index src: | --index-url=https://pip.mymirror.org my-plugin>=10.0 # Remote git repository src: -e git+https://firstname.lastname@example.org#egg=tutor-contrib-myplugin # Local editable package src: -e /path/to/my/plugin
Link to the plugin project, where users can learn more about it and ask for support.
Current maintainer of the plugin. Same format as “author”.
Multi-line string that should contain extensive information about your plugin. The full description will be displayed with
tutor plugins show <name>. It will also be parsed for a match by
tutor plugins search <pattern>. Only the first line will be displayed in the output of
tutor plugins search. Make sure to keep the first line below 128 characters.
Manage plugins in development
Plugin developers and maintainers often want to install local versions of their plugins. They usually achieve this with
pip install -e /path/to/tutor-plugin. We can improve that workflow by creating an index for local plugins:
# Create the plugin index directory mkdir -p ~/localindex/palm/ # Edit the index vim ~/localindex/palm/plugins.yml
Add the following to the index:
- name: myplugin1 src: -e /path/to/tutor-myplugin1 - name: myplugin2 src: -e /path/to/tutor-myplugin2
Then add the index:
tutor plugins index add ~/localindex/
Install the plugins:
tutor plugins install myplugin1 myplugin2
Re-install all plugins:
tutor plugins upgrade all
The latter commands will install from the local index, and not from the remote indexes, because indexes that are added last have higher priority when plugins with the same names are found.
Install plugins from a private index
Plugin authors might want to share plugins with a limited number of users. This is for instance the case when a plugin is for internal use only.
First, users should have access to the
plugins.yml file. There are different ways to achieve that:
Make the index public: after all, it’s mostly the plugins which are private.
Grant access to the index from behind a VPN.
Hide the index behing a basic HTTP auth url. The index can then be added with
tutor plugins index add http://user:email@example.com/index/.
Download the index to disk, and then add it from the local path:
tutor plugins index add ../path/to/index.
Second, users should be able to install the plugins that are listed in the index. We recommend that the plugins are uploaded to a pip-compatible self-hosted mirror, such as devpi. Alternatively, packages can be installed from a private Git repository. For instance:
# Install from private pip index - name: myprivateplugin1 src: | --index-url=https://my-pip-index.mycompany.com/ tutor-contrib-myprivateplugin # Install from private git repository - name: myprivateplugin2 src: -e git+https://git.mycompany.com/tutor-contrib-myplugin2.git
Both examples work because the “src” field supports just any syntax that could also be included in a requirements file installed with
pip install -r requirements.txt.