dart - Pub get 'Connection closed before full header was received' Angular + Polymer -

i trying packages pub following:

name: 'ch_padart' version: 0.0.1 dependencies:   angular: "1.1.0"   angular_node_bind:   polymer: ">=0.15.5+2 <0.16.0"   core_elements: ">=0.6.0+4 <0.7.0"   paper_elements: ">=0.6.1 <0.7.0"   web_components: ">=0.9.0 <0.11.0"   browser: ">=0.10.0+2 <0.11.0" dev_dependencies:   unittest: ">=0.11.0+5 <0.12.0"   mock: ">=0.11.0+2 <0.12.0" transformers: - angular:       html_files:       - web/index.html - polymer:       entry_points: web/index.html       lint: false 

but end result 'connection closed before full header received' if remove angular or polymer (and elements) , run pub get, there no issue , download , runs fine. no other warnings displayed , --verbose yields nothing helpful can see.

when run pub -v command line see pub working quite hard can't find compatible set of dependencies. there similar issue guess collection package required in different dependencies non-overlapping version constraints. quite common when using angular polymer. might need investigate dependencies manually find cause.

maybe feedback pub get when remove dependency constraints , start adding them again 1 one.