haskell-distributed / haskell-distributed/distributed-process
createTransport in ch1 is broken with recent network-transport-tcp-0.6.0
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Description
Versions of the network-transport-tcp (and distributed-process) are needed to be specified.
For now, with recent version, example does not compile:
• Couldn't match expected type ‘IO
(Either
a0 network-transport-0.5.2:Network.Transport.Transport)’
with actual type ‘Network.Transport.TCP.TCPParameters
-> IO
(Either
GHC.IO.Exception.IOException
network-transport-0.5.2:Network.Transport.Transport)’
• Probable cause: ‘createTransport’ is applied to too few arguments
In a stmt of a 'do' block:
Right t <- createTransport "127.0.0.1" "10501" defaultTCPParameters
In the expression:
do Right t <- createTransport
"127.0.0.1" "10501" defaultTCPParameters
node <- newLocalNode t initRemoteTable
runProcess node
$ do echoPid <- spawnLocal $ forever $ do ...
say "send some messages!"
....
In an equation for ‘main’:
main
= do Right t <- createTransport
"127.0.0.1" "10501" defaultTCPParameters
node <- newLocalNode t initRemoteTable
runProcess node
$ do echoPid <- spawnLocal $ forever $ ...
....
|
17 | Right t <- createTransport "127.0.0.1" "10501" defaultTCPParameters
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the ch1 example and inspect the createTransport call at line 17 alongside the network-transport-tcp and distributed-process versions. Reproduce the compilation failure with the recent dependencies, then update the example or version guidance so the example compiles successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- haskell
- Domain
- distributed-systems
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100