observatory is not starting (dart 2.13)

[n0npax]

Hi,

Seems dust is not working well with null safety and the newest dart.

dart run bin/dust.dart example/crash_on_bad.dart 
Unhandled exception:
Observatory did not start on 7575
output:

#0      VmController._startProcess (package:dust/src/vm_controller.dart:268:7)
<asynchronous suspension>
#1      VmController.prestart (package:dust/src/vm_controller.dart:69:5)
<asynchronous suspension>
#2      Future.wait.<anonymous closure> (dart:async/future.dart)
<asynchronous suspension>
#3      Cli.run (package:dust/src/cli.dart:199:7)
<asynchronous suspension>
#4      main (file:///tmp/dust/bin/dust.dart:8:3)
<asynchronous suspension>

dart --version
Dart SDK version: 2.13.4 (stable) (Unknown timestamp) on "linux_x64"

[clincoln8]

Was this ever resolved? I am having the same issue running on M1 Mac.

[clincoln8]

The issue is caused by an outdated path in lib/src/vm_controller.dart to
'.pub-cache/global_packages/dust/bin/controller.dart.snapshot.dart2'.

The current controller snapshot in pub_cache is called controller.dart-2.16.2.snapshot therefore to resolve this run

cp ~/.pub-cache/global_packages/dust/bin/controller.dart-2.16.2.snapshot ~/.pub-cache/global_packages/dust/bin/controller.dart.snapshot.dart2

to make the hardcoded path point to a valid controller snapshot.

[n0npax]

Awesome, Thank you for the hint. It works!