Keter not building under fresh Ubuntu 18.04 LTS

[jamiepauson]

Following instructions on https://github.com/snoyberg/keter/blob/master/README.md.

The "cabal install keter" command fails with:

Keter/Main.hs:41:53: error:
Module
'Network.HTTP.Conduit'
does not export
'conduitManagerSettings'

[lucch]

You probably want to build Keter using stack instead of cabal. Stack will download and use the appropriate versions of package dependencies and the GHC compiler.

1. Install stack (https://docs.haskellstack.org/en/stable/README/#how-to-install).
2. Clone this repository (eg: git clone https://github.com/snoyberg/keter.git).
3. Move into the cloned directory and run stack build.
4. Copy the generated keter binary to the appropriate location (eg: /opt/keter/bin).

This should work! 🙂

However, as per the documentation, note that:

For a production system, we recommend building the keter binary on a separate system, and tracking it via a package manager or similar strategy.

I use to build Keter on my local machine using Docker and then deploy the compiled binary to the server simply using scp. Stack also facilitates that because of its Docker integration.

[mmzx]

Great to see bigger traffic here eventually. I can confirm cabal new-build with ghc-8.6 would work. In case you use stack for building, choose the lts version wisely.

[lucch]

I default to using whatever LTS comes in stack.yaml. Just built keter/1.4.3.2 using its kinda outdated resolver and deployed to a new CentOS server I've got. At least for my current needs, it's doing the job.