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#'
(This was for a compiler built from the ghc-9.2 branch.)
I'd like to be able to do the same for HEAD.
I need to do this to help with the numerous tickets asking about library
regressions. For example, I want to be able repoduce @harendra's
example<https://gitlab.haskell.org/ghc/ghc/-/issues/19557#note_348969>, but I
can't because I can't build streamly.
Thanks!
Simon
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