mixlar-sdk 0.1.3

Official SDK and CLI for building Mixlar M1X plugins and device widgets.

Mixlar SDK

The official SDK and CLI for building Mixlar Control plugins and M1X device widgets. Write a plugin once, against typed, importable classes — the same classes the desktop app itself uses — and test it end-to-end without a device plugged in: lint the manifest, run it against a headless mock device, render its widget to a PNG, sign it, and package it, all from the command line.

Off-app, from mixlar import MixlarPlugin gives you a faithful standalone implementation with autocomplete and type checking. Inside the running Mixlar Control app, that same import transparently becomes the app's own live class — so a plugin authored against this SDK loads completely unmodified. See How this maps onto the app below.

Install

pip install mixlar-sdk

Or, to hack on the SDK itself, from a checkout of this folder:

pip install -e .

Optional extras, added as needed:

extra	adds	needed for
[render]	Pillow	mixlar-sdk emulate --render (widget PNG previews)
[publish]	requests	mixlar-sdk publish (nicer HTTP errors; stdlib fallback works without it)
[dev]	pytest, Pillow, requests	running this SDK's own test suite
[all]	everything above	"just give me all of it"

pip install -e ".[all]"

This installs the mixlar-sdk console script. You can also run it in place with python -m mixlar_cli (handy before pip install -e ., or in CI).

Quickstart

mixlar-sdk create "My Plugin" --template full   # scaffold into ./my_plugin/
cd my_plugin
mixlar-sdk validate                             # lint plugin.json + widgets/
mixlar-sdk emulate --render preview.png         # render the widget, no hardware
mixlar-sdk emulate --interactive                # press/toggle/slide it from a REPL
mixlar-sdk keygen --key-id my-key               # once, if you plan to sign
mixlar-sdk pack --sign my-key                   # build a signed .mixplugin
mixlar-sdk link                                 # copy it into the app's plugins dir

create names the output folder after the plugin id (a slug derived from the display name, or --id), not the display name itself — "My Plugin" becomes ./my_plugin/.

Commands

command	what it does
create	scaffold a new plugin package from a template (macro, slider, widget, full)
validate	lint plugin.json and every bundled widgets/<id>/widget.json
link	copy (or symlink) a package into the app's plugins directory
dev	validate + link once, then watch the folder and re-sync on save
emulate	run a package against a headless mock device — render a PNG or drive it interactively
pack	zip a validated package into a .mixplugin, optionally signing it first
sign	sign a package in place with a publisher key
verify	check a package's signature against the pinned publisher keyset
keygen	generate an ed25519 publisher keypair
publish	upload a .mixplugin to the marketplace (stub until the endpoint ships)

Full reference with flags and example output: docs/cli.md.

The SDK in a nutshell

from mixlar import MixlarPlugin
from mixlar.macros import MacroActions, action
from mixlar.colors import ACCENT

class MyPlugin(MacroActions, MixlarPlugin):
    plugin_id = "my_plugin"
    plugin_name = "My Plugin"
    plugin_icon_color = ACCENT

    #: Pairs this plugin with widgets/my_widget/widget.json.
    widget_id = "my_widget"

    @action("ping", "Ping", icon="fa5s.satellite-dish")
    def _ping(self, step):
        self.push_widget_data("status", "pong!")   # → WDATA,my_widget.status,pong!

    def on_widget_shown(self, widget_id):
        self.push_widget_data("status", "idle")

    def on_widget_event(self, widget_id, element_id, action):
        if element_id == "ping_btn" and action == "press":
            self._ping({})

That's a complete plugin: a macro action, a bundled device widget pairing, and a button handler. No boilerplate quartet of empty methods to override — MacroActions derives get_macro_actions() / get_macro_action_groups() / get_macro_action_icons() / execute_macro_step() from the @action decorators for you (see docs/plugin-api.md).

How this maps onto the app

Everything in this SDK is a faithful, importable port of code that already lives inline in PC Software/mixlar_mini.py — MixlarPlugin, PluginRegistry, the color palette, the ed25519 package signing, the widget/manifest linters. Off-app you get standalone reimplementations (so imports resolve in your editor and this SDK has no dependency on the app). Inside the running app, mixlar.plugin.MixlarPlugin, mixlar.registry.PluginRegistry, and mixlar.colors.* detect that mixlar_mini is already imported and transparently re-export the app's own live objects instead — same class, same registry, same palette — so a plugin written against this SDK needs zero changes to run for real, and push_widget_data reaches the actual serial link. This "single source of truth" seam is documented in each module's docstring and in docs/migration.md.

Package trust works the same way both places: mixlar.signing.package_digest computes the exact SHA-256 the app's _plugin_package_digest computes, so a package signed with this SDK verifies in the real app. See docs/signing-and-packaging.md.

Documentation

Start at docs/index.md. Highlights:

• docs/getting-started.md — install, scaffold, the author loop
• docs/plugin-api.md — the MixlarPlugin hook reference
• docs/widgets.md — building device widgets with Widget
• docs/settings.md — declarative settings.schema.json
• docs/signing-and-packaging.md — trust, keys, .mixplugin
• docs/emulator.md — testing without hardware
• docs/events.md — the system-events contract
• docs/cli.md — every command in detail
• docs/migration.md — converting a legacy plugin, and adopting the SDK app-side
• docs/roadmap.md — shipped vs. what still needs app-side wiring

A complete worked example — a Pomodoro timer plugin with macros, a settings schema, and a bundled countdown widget — lives in examples/pomodoro/.

For the underlying specs this SDK implements, see the repo root's PLUGINS.md (package format, install/trust flow) and WIDGETS.md (widget spec, serial protocol).