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I'm trying to create a simple project with the latest versions of polymer, angular, and bwu_datagrid 0.0.18. I can't get pass the pub get, I get a warning and pub never downloads bwu_datagrid. I need help getting these 3 gems to work in symphony.

pubspec.yaml:
name: angu_poly
description: A sample web application
dependencies:
angular: any
polymer: any
bwu_datagrid: "0.0.18"

This is the warning I get:

Pub get failed, [1] Resolving dependencies... Incompatible version constraints on barback: - polymer 0.10.0-pre.0 depends on version >=0.9.0 <0.13.0 - pub itself depends on version >=0.13.0 <0.15.3

** Warning: Application may fail to run since packages did not get installed.Try running pub get again. **

Just in case, I'm on the latest dart editor/sdk:
Dart Editor version 1.7.2.release (STABLE) Dart SDK version 1.7.2

Günter Zöchbauer
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Alex L.
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1 Answers1

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Add a specific version constraint to you pubspec.yaml.

dependencies:
  polymer: '>=0.15.1 <0.16.0'

This might lead to follow up errors. Continue accordingly for similar errors.
As last resort you can add dependency overrides to force a package no matter if it fulfills the constraints defined in the other imported packages (use at your own risk though). 

 dependency_overrides:
   some_package: '=>1.0.0 <1.1.1'
Günter Zöchbauer
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  • I did, but I'm still getting an error. my new pubspec.yaml: `name: angu_poly description: A sample web application dependencies: angular: '>=0.14.0 <2.0.0' polymer: '>=0.15.1 <0.16.0' bwu_datagrid: '0.0.18'` Warning: Pub get failed, [1] Resolving dependencies... Incompatible version constraints on args: - angular 0.14.0 depends on version >=0.10.0 <0.11.0 - polymer 0.15.1 depends on version >=0.11.0 <0.13.0 ** Warning: Application may fail to run since packages did not get installed.Try running pub get again. ** – Alex L. Nov 18 '14 at 21:39
  • I'm sorry, not an error, a warning. I tried doing a dependency override on the BWU datagrid, but no luck. I get a similar warning. Pub get failed, [1] Resolving dependencies... Incompatible version constraints on browser: - angular 0.0.8 depends on version >=0.8.7 <0.9.0 - polymer 0.12.1 depends on version >=0.10.0 <0.11.0 ** Warning: Application may fail to run since packages did not get installed.Try running pub get again. ** – Alex L. Nov 18 '14 at 22:02
  • Your warning misses the package name. You then need to add the package triggering this warning to dependency_overrides as well. It is a bit weird but sometimes when no specific version constraint was set `pub` doesn't use the latest available release, especially when there is no solution that fulfills all version constraints. In this case `angular 0.0.8`. This is the oldest not the most recent version. – Günter Zöchbauer Nov 19 '14 at 05:01
  • Thank you. I had to override pretty much all dependencies, the project at least compiled, and no more warnings. – Alex L. Nov 19 '14 at 23:23
  • angular, polymer and bwu_datagrid is the complete list of dependencies in your pubspec.yaml? – Günter Zöchbauer Nov 20 '14 at 04:56
  • it was, but now I had to override `args, code_transformers, html5lib, observe, polymer, and angular` to get the project to compile. I forgot to mentioned that we want to use angular 1.0.0+ and polymer 0.15.0+, besides, bwu requires >0.12.1+. I just feel...a bit dirty with this hack, but I understand, that's just the way for now.... – Alex L. Nov 20 '14 at 19:58