pub tells me that there is no appengine 0.3.0 but there is

[zoechi]

I hope it's ok to create the issue here instead of http://dartbug.com?

dependencies:
  appengine: '>=0.3.0 <0.4.0'

or

dependencies:
  appengine: ^0.3.0

 (v1service_mock) $ pub upgrade
Resolving dependencies... (4.5s) 
Package appengine has no versions that match >=0.3.0 <0.4.0 derived from:
- bwu_datastore_connection depends on version >=0.3.0 <0.4.0

https://pub.dartlang.org/packages/appengine

when I change the constraint to ^0.2.0 I get

Package gcloud has no versions that match >=0.1.0 <0.2.0 derived from:
- appengine 0.2.2 depends on version >=0.1.0 <0.2.0

full pubspec.yaml

name: bwu_datastore_connection
version: 0.0.1
author: Günter Zöchbauer <[email protected]>
publish-to: none
environment:
  sdk: ">=1.8.0-dev.3.0 <2.0.0"

dependencies:
  appengine: '>=0.3.0 <0.4.0'
  fixnum: ^0.9.1
  googleapis_auth: ^0.2.3
  googleapis_beta: ^0.14.0
  http: ^0.11.0
  logging: ^0.11.0
  logging_handlers: ^0.8.0
  protobuf: ^0.3.6
  quiver_log: ^1.0.3
  shelf: ^0.6.0
  uuid: ^0.5.0

dev_dependencies:
  bwu_datastore_launcher:
    path: ../bwu_datastore_launcher
  bwu_utils_dev:
    path: ../bwu_utils_dev
  dart_style: ^0.1.8
  grinder: ^0.7.1+3
  linter: ^0.0.2+3
  test: ^0.12.2

[zoechi]

Dart VM version: 1.11.0-edge.131652 (Wed May 27 18:15:00 2015) on "linux_x64"

[kevmoo]

@zoechi Try running pub upgrade --verbosity=solver and include the output

[nex3]

Depending on the details of how the version solver progresses, it can print out some unexpected or inaccurate errors. This is because the "real" error is multilayered and complex, and currently the solver has no way of representing that. Dollars to donuts once you post the --verbosity=solver output, that's what's going on.