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the following compile error occuring for me with dependency on distributed-process with LTS-15.0/ghc-8.8.2
• Could not deduce (MonadFail Process) arising from a use of ‘fail’
distributed-process > from the context: Typeable a
distributed-process > bound by the type signature for:
distributed-process > unStatic :: forall a. Typeable a => Static a -> Process a
distributed-process > at src/Control/Distributed/Process/Internal/Primitives.hs:1269:1-47
distributed-process > • In the expression:
distributed-process > fail $ "Could not resolve static value: " ++ err
distributed-process > In a case alternative:
distributed-process > Left err -> fail $ "Could not resolve static value: " ++ err
distributed-process > In a stmt of a 'do' block:
distributed-process > case Static.unstatic rtable static of
distributed-process > Left err -> fail $ "Could not resolve static value: " ++ err
distributed-process > Right x -> return x
distributed-process > |
distributed-process > 1273 | Left err -> fail $ "Could not resolve static value: " ++ err
I solved this build issue locally by adding following after Process definition in src/Distributed/Process/Internal/Types.hs:
instance MonadFail Process where
fail = error
However, I had to hack stack.yml also as follows to build quickly, so this is perhaps a diagnosis that someone in the project would need to apply, with backwards compatibility etc.
resolver: lts-15.0 # 12.18 Use GHC 8.4.4
# TODO: we can enable nightly-2018-11-11 once PR #319 is merged
packages:
- '.'
- distributed-process-tests/
extra-deps:
- distributed-static-0.3.9@sha256:0eb308ee416db4541cb5b4d2dff387e7c9394e6deaf76b7e829ce46add4448bc,2237
- hashable-1.2.7.0@sha256:03b6836ca9cd3ad0e5a2f3cce989b001dd0e05f306a873db3196037adb30e0a4,5215
- network-2.8.0.1@sha256:0f165dffa752d8cde30c2bde86f80609c4f1dc5eeb3182d593041f97839c5b3b,3011
- rematch-0.2.0.0@sha256:86019f4d6a4347e1291a0a9f85ba6324e1447e2b93d75958e59c24212e9d8178,1245
# previous pins
# - rank1dynamic-0.4.0
# - distributed-static-0.3.8
# - network-transport-0.5.2
# - network-transport-inmemory-0.5.2
# - rematch-0.2.0.0
- git: https://github.com/haskell-distributed/network-transport-tcp.git
commit: d87d6f55697a94a1fbf211ff9c1bb769a1e129cd
flags:
distributed-process-tests:
tcp: true
allow-newer: true # needed because of cabal config
system-ghc: true # life's too short
thanks for the great work.
Stephen.
The text was updated successfully, but these errors were encountered:
Hi,
the following compile error occuring for me with dependency on distributed-process with LTS-15.0/ghc-8.8.2
I solved this build issue locally by adding following after
Process
definition in src/Distributed/Process/Internal/Types.hs:However, I had to hack stack.yml also as follows to build quickly, so this is perhaps a diagnosis that someone in the project would need to apply, with backwards compatibility etc.
thanks for the great work.
Stephen.
The text was updated successfully, but these errors were encountered: