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build-mpy

GitHub Action for building packages of .mpy files for CircuitPython projects and attaching them to releases as ZIP files. Files other than .mpy and .py files will be added to the ZIP file as well. Note that any files named or code.py are automatically not compiled for convenience.

Inputs

Argument Name Description Default Notes
github-token Your GitHub token N/A N/A
circuitpy-tag The version of CircuitPython to compile for N/A You can use any valid tag (or branch) from adafruit/circuitpython
zip-filename The name of the ZIP file that will be attached "mpy-release.zip" N/A
circuitpython-repo-name The name of the clone CircuitPython repo "circuitpython-repo" Change if it conflicts with another file
mpy-directory The directory to search for files to compile "." (top folder) Becomes the basis for filepaths in mpy-manifest-file
mpy-manifest-file A file with a list of files to compile or exclude "" If none is given, all files in mpy-directory are used
mpy-manifest-type Whether the files in the manifest file should be included or excluded "include" N/A
zip-directory The directory to add to the ZIP file "." (top folder) Becomes the basis for filepaths in zip-manifest-file
zip-manifest-file A file with a list of files to add to the ZIP file or exclude from it "" If none is given, all files in zip-directory are used
zip-manifest-type Whether the files in the manifest file should be included or excluded "include" N/A

Examples

If you have just a repository with files intended for a CircuitPython board, your release file could be very simple! This release CI creates .mpy files for CircuitPython 8.2.0:

on:
  release:
    types: [published]

jobs:
  upload-mpy-zips:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout the current repo
      uses: actions/checkout@v3
      with:
        submodules: true
    - name: Run MPY Action
      uses: adafruit/build-mpy@v1
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        circuitpy-tag: "8.2.0"

You also have granular control of which directories to compile and zip and the ability to specify which files should or should not be compiled and/or zipped. For example, if you wanted to compile and zip files in a folder named microcontroller and you wanted to use a manifest file named mpy_manifest.txt to specify certain files NOT to compile, you could modify the script above to be:

on:
  release:
    types: [published]

jobs:
  upload-mpy-zips:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout the current repo
      uses: actions/checkout@v3
      with:
        submodules: true
    - name: Run MPY Action
      uses: adafruit/build-mpy@v1
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        circuitpy-tag: "8.2.0"
        mpy-directory: "microcontroller"
        mpy-manifest-file: "mpy_manifest.txt"
        mpy-manifest-type: "exclude"
        zip-directory: "microcontroller"