Can’t get sass + compass + susy installed due to version conflict

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The dependencies are incompatible: susy 2.0.0 depends on sass ~> 3.3.0 whereas compass 0.12.3 depends on sass = 3.2.14.

The error message says the same:

Unable to activate susy-2.0.0, because sass-3.2.14 conflicts with sass (~> 3.3.0)

You can a) downgrade susy to a version that’s working with sass 3.2.14 or b) upgrade compass to a version compatible with sass 3.3.x.

A compatible version is compass 1.0.0 (or later) depending on sass < 3.5, >= 3.3.13. You can install it via

gem update compass

It might be easier to use a gem manager like Bundler. It automatically resolves dependencies and installs the appropriate versions.

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