[BUG] fvm install without argument should have a nicer error message

[kuhnroyal]

fvm install without version argument throws an exception but should provide a nice error message instead.

Unhandled exception:
NoSuchMethodError: Class 'ExceptionMissingChannelVersion' has no instance getter 'message'.
Receiver: Instance of 'ExceptionMissingChannelVersion'
Tried calling: message
#0      Object.noSuchMethod (dart:core-patch/object_patch.dart:53:5)
#1      fvmRunner.<anonymous closure> (package:fvm/fvm.dart:30:45)
#2      _RootZone.runBinary (dart:async/zone.dart:1444:54)
#3      _FutureListener.handleError (dart:async/future_impl.dart:155:20)
#4      Future._propagateToListeners.handleError (dart:async/future_impl.dart:698:47)
#5      Future._propagateToListeners (dart:async/future_impl.dart:719:24)
#6      Future._completeError (dart:async/future_impl.dart:534:5)
#7      _AsyncAwaitCompleter.completeError (dart:async-patch/async_patch.dart:43:15)
#8      CommandRunner.runCommand (package:args/command_runner.dart)
<asynchronous suspension>
#9      CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:112:25)
#10     new Future.sync (dart:async/future.dart:224:31)
#11     CommandRunner.run (package:args/command_runner.dart:112:14)
#12     fvmRunner (package:fvm/fvm.dart:26:23)
#13     main (file:///Users/p.leibiger/.pub-cache/hosted/pub.intern.sk/fvm-0.8.0/bin/main.dart:4:9)
#14     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32)
#15     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

FVM Version: 0.8.0

With the new .fvm/fvm_config.json file the install command should look for this version and install and use this if available.

[kuhnroyal]

Nice work. The same behavior should be applied to the use command and after that an init command can be added that combines both commands.

[leoafarias]

@kuhnroyal I have made a change on the use command. I am trying to make sure the install and use are distinctive commands. I have added a confirmation install on use.

Keep in mind that if the config exists it means the project is already using the version.

[kuhnroyal]

@leoafarias There still seems to be a problem for me when checking out a configured project from VCS.
Running fvm install does not create the .fvm/flutter_sdk link and fvm use can not be run without a version. So there is something missing, either fvm use needs to be runnable without version (from config instead) or fvm install needs to create the link.
Alternatively there could be some new command for already configured projects.

[leoafarias]

@kuhnroyal Just deployed a new version that addresses this. Also I have set as version 1.0 as I think we are feature locked. Please let me know and open up any issues if you find anything

[kuhnroyal]

@leoafarias Thanks, I will test this tomorrow.