persistent-sqlite: a fix for template-haskell 2.16, GHC 8.10 alpha #993
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In GHC 8.10 (alpha2, at least), a TH splice (eg makeLenses) between usage and definition of an instance (eg FromJSON) makes the instance invisible at the usage site, causing an error. Cf https://gitlab.haskell.org/ghc/ghc/merge_requests/1817#note_242542 This change lets persistent-sqlite build with GHC 8.10-alpha2. I'm not sure about the other packages (didn't have the right deps to build mysql).
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This is definitely a patch-level change. Thanks! |
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Released as 2.10.5.1 |
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In GHC 8.10 (alpha2, at least), a TH splice (eg makeLenses) between
usage and definition of an instance (eg FromJSON) makes the instance
invisible at the usage site, causing an error. Cf
https://gitlab.haskell.org/ghc/ghc/merge_requests/1817#note_242542
This change lets persistent-sqlite build with GHC 8.10-alpha2.
I'm not sure about the other packages (didn't have the right deps
to build mysql).