Can't find compatible version for ~> major version.

[jcoyne]

Bundler could not find compatible versions for gem "mime-types":
  In snapshot (Gemfile.lock):
    mime-types (= 2.5)

  In Gemfile:
    rails (= 4.2.1) ruby depends on
      actionmailer (= 4.2.1) ruby depends on
        mail (>= 2.5.4, ~> 2.5) ruby depends on
          mime-types (< 3, >= 1.16) ruby

    hydra-collections (>= 0) ruby depends on
      hydra-works (~> 0.0.1) ruby depends on
        hydra-derivatives (~> 1.1.0) ruby depends on
          mime-types (~> 1) ruby

I'm using bundler 1.9.9. It seems like it should be able to resolve this conflict.

[jcoyne]

Here's an even simpler version:

Bundler could not find compatible versions for gem "mime-types":
  In Gemfile:
    hydra-works (>= 0) ruby depends on
      hydra-derivatives (~> 1.1.0) ruby depends on
        mime-types (~> 1) ruby

    mime-types (~> 2.5) ruby

Perhaps it's because the mime-types gem actually has a 2.5 (no patch level) release?

[segiddins]

could you please share the output of bundle env so we can try and debug this?

[TimMoore]

@jcoyne what are you expecting ~> 1 to do? Normally, ~> drops a segment off the end of the version.

[jcoyne]

@TimMoore Perhaps, I'm just using it incorrectly. I guess that => 1 is what I needed.