[battery_plus] null-safety

[miquelbeltran]

See #50

[miquelbeltran]

blocked by this:

The current Dart SDK version is 2.12.0-259.12.beta.

Because no versions of dbus match >0.2.0 <0.3.0 and dbus 0.2.0 depends on xml ^5.0.0, dbus ^0.2.0 requires xml ^5.0.0.
Because xml 5.0.0 requires SDK version >=2.12.0-259.14.beta <3.0.0 and no versions of xml match >5.0.0 <6.0.0, xml ^5.0.0 is forbidden.
Thus, dbus ^0.2.0 is forbidden.
So, because battery_plus_linux depends on dbus ^0.2.0, version solving failed.
pub get failed (1; So, because battery_plus_linux depends on dbus ^0.2.0, version solving failed.

[jpnurmi]

Is it because xml sdk contraint is '>=2.12.0-259.14.beta <3.0.0'?

https://github.com/renggli/dart-xml/blob/main/pubspec.yaml#L8

[jpnurmi]

It's not only xml but also its dependency petitparser

• Lower the SDK constraint for Flutter beta compatibility petitparser/dart-petitparser#97
• Lower the SDK constraint for Flutter beta compatibility renggli/dart-xml#101

[jpnurmi]

Aaaand next:

Running "flutter pub get" in example...                         
Because every version of battery_plus from path depends on battery_plus_linux from path which depends on dbus ^0.2.0, every version of battery_plus from path requires dbus ^0.2.0.
And because dbus >=0.2.0 depends on args ^2.0.0 and every version of flutter_driver from sdk depends on args 1.6.0, battery_plus from path is incompatible with flutter_driver from sdk.
So, because battery_plus_example depends on both flutter_driver any from sdk and battery_plus from path, version solving failed.
pub get failed (1; So, because battery_plus_example depends on both flutter_driver any from sdk and battery_plus from path, version solving failed.)

[jpnurmi]

To get past the args conflict, you can add to battery_plus/example/pubspec.yaml:

dependency_overrides:
  args: ^2.0.0

#50 (comment)

[jpnurmi]

LGTM 👍

[miquelbeltran]

Thank you!