This commit lets you customize Livebook shutdown to gracefully power
off. One use case is for Nerves-based devices that need to do more than
call `System.stop/0` to power off.
This doesn't change the `LIVEBOOK_SHUTDOWN_ENABLED` environment
variable. It still works the same.
The `:shutdown_enabled` configuration is now `:shutdown_callback`. Valid
values are `nil` or an MFA. An unset or `nil` callback hides the
shutdown button in the UI.
* Add LIVEBOOK_SHUTDOWN_ENABLED
Previously we relied on code:get_mode(), but since
releases are starting in interactive mode to use
less memory, we need a clearer mechanism.
* Move shutdown feature check to Livebook.Config
Co-authored-by: Jonatan Kłosko <jonatanklosko@gmail.com>
* Automate searching and adding new dependencies
* Restructure runtime management
* Leave search restrictions up to the runtime
* Support predefined dependencies in Embedded runtime dependency search
* Use the embedded runtime for dependency search test
* Fix typo
* Use module for loading embedded runtime dependencies
* Improve naming
* Create home and data_path directories if missing
* Update lib/livebook/config.ex
* Configure project-local data path for dev and test env
* Expand dev/test paths in compile config
Co-authored-by: Jonatan Kłosko <jonatanklosko@gmail.com>
* Serve iframes from another local port when running on http
* Use relative hostname in local iframe URL
* Simplify server start check
* Use random iframe port when Livebook runs on a random port
* Rename space/ to iframe/
* LivebookWeb.IframePlug -> LivebookWeb.IframeEndpoint
* Introduce file system abstraction and an S3 implementation
* Support arbitrary absolute paths and delegate resolution to file system
* Remove accidental notebook file
* Apply suggestions from code review
Co-authored-by: José Valim <jose.valim@dashbit.co>
* Apply review comments
* Add missing path assertions
* Apply review comments
* Fix test saving notebook in project root
Co-authored-by: José Valim <jose.valim@dashbit.co>
* Add support for Mix runtime as a default
* Support default runtime options in the CLI
* Set cell status to queued while runtime is being started
* Clean up tests
* Add embedded runtime for evaluating code in the Livebook VM
* Update lib/livebook_web/live/session_live/embedded_live.ex
Co-authored-by: José Valim <jose.valim@dashbit.co>
* Use standard error proxy globally in the Livebook node
* Add configuration env variable for setting the default runtime
* Increase evaluation response assertion timeouts
Co-authored-by: José Valim <jose.valim@dashbit.co>
