Cabal revisions of structs-0

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:          structs category:      Data version:       0+x-revision: 1 license:       BSD3 cabal-version: >= 1.22 license-file:  LICENSE  library   build-depends:-    base >= 4.8 && < 5,+    base >= 4.8 && < 4.9,     deepseq,     ghc-prim,     primitive