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Currently tools.deps does not support jars that package their own native libraries.  

chrisn@chrisn-dt:~/dev/tvm-clj/tvm/build$ clojure -Sdeps '{:deps {techascent/tech.opencv {:mvn/version "1.2"}}}'
Clojure 1.9.0
user=> (require '[tech.opencv :as opencv])
WARNING: cast already refers to: #'clojure.core/cast in namespace: tech.datatype.base, being replaced by: #'tech.datatype.base/cast
WARNING: cast already refers to: #'clojure.core/cast in namespace: tech.datatype, being replaced by: #'tech.datatype/cast
CompilerException java.lang.ClassNotFoundException: org.bytedeco.javacpp.opencv_core, compiling:(tech/opencv.clj:1:1)

A form of this works from leiningen and java.

Here is a good chunk of the leiningen code to do this:

https://github.com/technomancy/leiningen/blob/master/leiningen-core/src/leiningen/core/classpath.clj

A lot of java software does this:

1.  They try to load the library from the system if possible.
2.  Failing that, they extract the library included in the jar to a temporary location and try to load this.

This, I believe, is the best pathway although it is somewhat outside the purview of tools.deps; perhaps there could be a companion library?

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Reference: https://clojure.atlassian.net/browse/TDEPS-103 (reported by alex+import)
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