Relax poison version to prevent version conflicts in library usage

[seantanly]

The dep poison hasn't been updated for a long time, sitting at version 4.0.1. Many libraries have already moved to version 4.0 or off it.

The change adds support for ~> 4.0, thus removing version conflicts that arise due to the current requirement of "~> 3.1", even though it's marked as optional.

[moxley]

Thanks @seantanly !!!

[mbuhot]

TBH I think users of Poison 4.x should be made to use override: true in their mix.exs file.
It is incompatible with several libraries, due to: devinus/poison#172

[seantanly]

TBH I think users of Poison 4.x should be made to use override: true in their mix.exs file.
It is incompatible with several libraries, due to: devinus/poison#172

I have tried that and even with the override above open-api-spex, the conflicts still occur, unfortunately.

{:poison, "~> 4.0", override: true},
{:open_api_spex, "~> 3.10"}

Unless open_api_spex doesn't work with Poison 4.x (tests passed), it should be fine additionally specifying the Poison 4.x support.

[mbuhot]

I have tried that and even with the override above open-api-spex, the conflicts still occur, unfortunately.

Sounds like a bug.

Unless open_api_spex doesn't work with Poison 4.x (tests passed), it should be fine additionally specifying the Poison 4.x support.

Yeah it's not a problem for open_api_spex.

Out of curiosity, is there a library that is only compatible with Poison 4.0?
After a quick search on Hex and Github all I could find are libraries like Ecto and Phoenix that have removed it as a dependency altogether, or older libraries that depend on version 3.

[seantanly]

Out of curiosity, is there a library that is only compatible with Poison 4.0?
After a quick search on Hex and Github all I could find are libraries like Ecto and Phoenix that have removed it as a dependency altogether, or older libraries that depend on version 3.

elastix which unfortunately did not release a newer version though that is fixed on master.
werbitzky/elastix@05ec79f#diff-dfa6f4ed74c90e5d4fda283d547d366586e690387289bcfd473e3fa5f9ace308R43