Package 'log4dart' is depended on from both sources 'hosted' and 'git'

Question

Trying to review a tutorial from the following links:

http://blog.dartwatch.com/2012/03/building-client-server-dart-app-part-1.html http://blog.dartwatch.com/2012/03/building-client-server-dart-app-part-2.html

Here's my pubspec.yaml:

name:  myapp
description:  A sample application

dependencies:
  log4dart: any
  mongo_dart: 0.0.1
  unittest: { sdk: unittest }
  crimsonhttp:
    git: git://github.com/chrisbu/CrimsonHttp.git

And here's the error:

Resolving dependencies...

Package 'log4dart' is depended on from both sources 'hosted' and 'git'.

It doesn't matter if I add 'log4dart' to pubspec (any) or not. The error is always the same. 'log4dart' got installed from 'mongo_dart' anyway. Has anyone any kind of experience with that particular error message? To me, it seem so what like a circular dependency issue.

solution Until 'crimsonhttpd' get's the issue fixed or accepts my pull request, use my repository from github with following pubspec example:

name:  myapp
description:  A sample application

dependencies:
  mongo_dart: 0.0.1
  unittest: { sdk: unittest }
  crimsonhttp:
    git: git://github.com/geekrumper/CrimsonHttp.git
  log4dart:

Answer 1

John is correct, the workaround is to specify the same git repo for log4dart that crimson does.

Packages are identified by their (source, description) pair. For hosted packages, the description is just the package name, but for Git packages the description also includes the Git URL. So two Git checkouts of log4dart from different repositories would also be incompatible.

I've opened two bugs to fix up the packages you're trying to use:

• https://github.com/Solvr/log4dart/issues/5 -- Update: fixed!
• https://github.com/chrisbu/CrimsonHttp/issues/7 -- Update: fixed!

Answer 2

I'm not sure why this would be an error for pub, but it appears that crimsonhttp is referencing the git version of log4dart. This is likely the cause of the error message.

To fix the issue, you could reference the git: version of log4dart in your own pubspec.