How to add versioneer to OctoPrint plugins

how_to_versioneer_octoprint.md

Adding python-versioneer to an OctoPrint plugin

This guide uses Gina's custom versioneer that allows for different branches to be versioned automatically, using a lookup file. If you want to use mainline versioneer, most of this applies with the exception of the lookupfile sections.

1. Download Gina's custom versioneer.py file from the OctoPrint repository
2. Add it to the project root of your plugin, eg OctoPrint-WS281x_LED_Status/versioneer.py
3. Add the configuration:

   • setup.cfg:

     [versioneer]
     VCS = git
     style = pep440-tag
     # be sure to change to your plugin!
     versionfile_source = octoprint_ws281x_led_status/_version.py
     versionfile_build = octoprint_ws281x_led_status/_version.py
     # (optional) add your version prefix here, eg you tag as `version-0.1.0` the prefix would be `version-`
     tag_prefix =
     parentdir_prefix =
     lookupfile = .versioneer-lookup
     

   • setup.py:

     Add import versioneer to the top of the file

     Modify plugin_version to become plugin_version = versioneer.get_version()

     Add plugin_cmdclass = versioneer.get_cmdclass() somewhere in all those variables

     Lower down the file, find the setup_parameters and add cmdclass=plugin_cmdclass as another kwarg to the function call

   • Your plugin's __init__.py:

     Add the following to somewhere near the top:

     from ._version import get_versions
     __version__ = get_versions()["version"]
     del get_versions

     and near the __plugin_name__ and __plugin_pythoncompat__ fields, add:

     __plugin_version = __version__

   • Run the versioneer installation (assumes project root):

     python versioneer.py setup

     It should create a _version.py file within your plugin's package

   • Versioneer lookup file:

     An optional part, if you want different branches to have different versions. If you leave this out, remember to make sure it is not in setup.cfg. If not included, versions will only increase with tags.

     Add the file .versioneer-lookup (plain text, no extension):

     # Configuration file for the versioneer lookup, manually mapping tags based on branches
     #
     # Format is
     #
     #   <branch-regex> <tag> <reference commit>
     #
     # The file is processed from top to bottom, the first matching line wins. If <tag> or <reference commit> are left out,
     # the lookup table does not apply to the matched branches
     
     # These branches should only use tags, use for your release branches
     master
     main
     pre-release
     rc/.*
     rc
     
     # neither should disconnected checkouts, e.g. 'git checkout <tag>'
     HEAD
     \(detached.*
     
     # here, maintenance is currently the branch for 0.5.2 - hash is of previous tag on this branch
     maintenance 0.5.2 2f7cec9d462e7073c8f65530b0951b8c4cf2dd50 pep440-dev
     
     # devel is currently the branch for work towards 0.6.0
     devel 0.6.0 2f7cec9d462e7073c8f65530b0951b8c4cf2dd50 pep440-dev
     
     # Every other branch is also development, so is resolved to 0.6.0 as well for now
     .* 0.6.0 2f7cec9d462e7073c8f65530b0951b8c4cf2dd50 pep440-dev
     

That should be everything! Give it a go, install your plugin and see the version number change as you push commits and tag releases!