Closes https://github.com/flutter/flutter/issues/132162.
I did a tiny bit of minor cleanup but didn't want to go 🍔 beyond the
scope of this change. After it lands I'll update the Wiki.
## Before
```bash
$ fl run \
--local-engine-src-path=$ENGINE \
--local-engine=android_debug_unopt_arm64
```
... would try to use `host_debug_unopt` (i.e. Rosetta).
## After
```bash
$ fl run \
--local-engine-src-path=$ENGINE \
--local-engine=android_debug_unopt_arm64 \
--local-engine-host=host_debug_unopt_arm64
```
... uses `host_debug_unopt_arm64`, as specified.
---
/cc @jonahwilliams @gaaclarke @zanderso
You can now specify a --local-web-sdk flag to point to a wasm_release folder. This will make it so that only artifacts that pertain to the web sdk are overridden to point to the wasm_release folder. Other artifacts (such as impellerc) will pull from the cache, or from the --local-engine path if that is specified.
This also uses precompiled platform kernel files for both ddc and dart2js
* Dart2JS build step looks for compiled platform binaries.
* Use new locations of platform binaries.
* Added --local-web-sdk command line flag.
* Need to use the matching frontend server when doing ddc stuff.
* Update packages/flutter_tools/lib/src/test/web_test_compiler.dart
Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
* Update packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
* Formatting issues.
* Need to use URI format for platform dill.
* Fix resident runner tests.
* Fix analysis issue.
* Fix and add unit tests.
* Add some useful comments.
* Refine doc comments for flags.
Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
Make the logic for locating a local engine path part of its own class, add documentation, and update tests to cover engine source path locating too.
#47161