haddock | Haskell Documentation Tool | Build Tool library

I have an ASCII diagram in a module's documentation that I would like to display in haddock, however I cannot figure out how to turn off markup for that section of the comments so that it doesn't treat characters as markup / special characters.

Does anyone know a way to do this? I'm looking for something that doesn't involve escaping the problem characters inline because that makes the diagram less legible when viewing the source.

The diagram in question looks like this:

I've been using the pandoc executable to convert a markdown file to a man-page via

I'm working on a Haskell library that contains parts that target WebAssembly (WASM) using Asterius. These parts can't be compiled with the normal ghc and for that reason we have flags that exclude/include the WASM parts.

Trying to build the documentation with Asterius' ahc-cabal new-haddock fails. It seems to revert to the normal ghc for the Haddock command.

My question is: Can I build the Haddock documentation without compiling the source it describes?

Excerpts of my file that might be relevante:

Section of my cabal file:

I was trying to write an installation script for a project I'm working on and I had to test it by installing ghc again (don't have the resources to download vms) from the following link : curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh. Everything works fine but when I run a project using cabal run proj I get the following warning where A,B stand for 32 character strings:

Following and adapting this blog post, I've been trying to produce a solution which should allow testing of a function which reads env vars (using System.Environment.lookupEnv).

That way, I should be able to inject an artificial environment for tests which can be read in place of performing the actual IO action.

However, the type check fails when attempting to read the env.

I'm working with dbus in haskell, and I'm having difficulties figuring out how to export dbus methods that perform stateful operations. Below is a fully fleshed out example to illustrate where I'm stuck.

Let's say you're writing a counter service with dbus. When the service starts, the counter is initially at 0. The service defines a dbus API that exposes a count method, which returns the current value of the counter, and an update method, which increments that counter, and returns the new value.

Here's a pseudocodey implementation of the behavior I just described, using a message-passing-style of communication:

The base library in Haskell has the following type synonyms in Data.Semigroup:

I have two collections, collectionA and collectionB and they are NOT related (i.e no 'foreign key' stuff). They represent two similar datasets, for arguments sake, let's say that collectionA is a collection of bird species, and collectionB of fish species

I need to query these both, but with skip and limit operators, so I need to concatenate the queries into one and apply skip and limit before the query is executed, because the collections have crazy volumes of data that will be frequently accessed, so the skip/limit is necessary, but I don't want the skip/limit to simply first reach over collectionA, and then reach into collectionB, I want them to access documents in the same increasing order as the timestamp in the _id's, so an example result might be

In an IHP project, I tried adding wreq to default.nix as described in https://ihp.digitallyinduced.com/Guide/recipes.html#making-a-http-request but I get