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Part of the issue is that a lot of libraries target jdk 8 since that's what Android supports.

• pjmlp 8y ago
  Actually libraries that target Android need to use Java 7, unless they want to constrain their users to API 26+.
  • lmm 8y ago
    Is newer Android fully JVM-8 compatible? It'd be great to be able to start using Scala 2.12 even if it means I have to restrict to new devices only.
    • pjmlp 8y ago
      Not really, a lot of desugering still takes place into DEX bytecodes. Stuff like lambdas take extra memory, because they convert into anonymous innerclasses instead of invokedynamic.
      • lmm 8y ago
        As far as I'm concerned that's an implementation detail. If I can take arbitrary JVM8 code and run it and expect a correct result then that's a huge improvement for my purposes.