Matthias Diener e7a529322f fish: add version 3.1.0 and switch to cmake (#15812) ... Versions < 3 do not support building with CMake.		2020-04-06 19:25:39 -05:00
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spack	fish: add version 3.1.0 and switch to cmake (#15812)	2020-04-06 19:25:39 -05:00