Simon Peyton Jones via ghc-devs <ghc-devs@haskell.org> writes: > Ben and other friends > What is the approved way to build libraries with (and for) a compiler that > I've just built? > I tried this: > > bash$ cabal v2-install > --with-ghc=/home/simonpj/code/ghc-9.2-branch/inplace/bin/ghc-stage2 streamly > --allow-newer > but it failed with > > Data/Primitive/Types.hs:273:844: error: > > * Couldn't match expected type 'Word#' with actual type 'Word8#' > > * In the fourth argument of 'shimmedSetWord8Array#', namely 'x#'
As noted by others, we maintain head.hackage for precisely this reason. It's not perfect, but I use it regularly to build Hackage packages with pre-releases. I have a draft blog post (which sadly has run into technical challenges which have prevented publishing) which describes usage [1]. Cheers, - Ben [1] https://gitlab.haskell.org/ghc/homepage/-/merge_requests/29
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