Status of School of
Earlier this year, I wrote a blogpost about our plans
for the next version of the School of Haskell. SoH is a community
service and project to make it possible to use interactive snippets
of Haskell on any website, in particular on schoolofhaskell.com. Today,
we are open sourcing the SoH 2.0 repositories! We've also retired
FP Haskell Center, and SoH pages that were previously on fpcomplete.com now redirect to schoolofhaskell.com.
Here's the current status of the different parts:
repo main SoH code, which includes the browser client and API
service. Once the service side of things is ready, they will allow
you to embed interactive Haskell snippets in any website!
is written using GHCJS, and provides a code editing widget. It uses
separate the view from the model / controller. It utilizes some of
GHCJS's fancier features, such as fully supporting concurrency and
runs within a container, and hooks up stack-ide to a
websocket for communication with soh-client.
soh-scheduler provides a REST API for requesting that a
container running soh-runner gets spun up. We ran into some issues
with deployment to ECS, likely due to our huge docker images. Our
plan is to rework / rewrite the service code to instead target
Kubernetes. Since the initial
implementation of SoH 2.0, we've had a lot of positive experiences
with kubernetes, and would prefer to use it.
repo repo contains code based on code for the fpcomplete.com site. It is served from schoolofhaskell.com. The
contents of the site is not yet interactive, as the kubernetes
based version of soh-scheduler still needs to be written and
There are quite a few immediate things to work on in SoH, in
particular, the switch to kubernetes, and integrating the new
client with schoolofhaskell.com. Once
these things are resolved, there are also some interesting
possibilities. Ever since the client code was initially written, a
number of developments have occurred that it might leverage:
One such development is haskell-ide-engine,
a project to centralize our efforts on providing Haskell tools
(particularly those that use GHC), as a service to text editors and
IDEs. We'd like to focus our efforts in this direction on
haskell-ide-engine, rather than stack-ide. This means that in the
future, SoH may be based on haskell-ide-engine, along with some
selection of its plugins. I encourage people to dive into helping
with HIE, to bring it to a point where it makes Haskell development
excellent, and to make it fit for usage SoH 2.0.
Another interesting development is Ryan Trinkle's excellent
library for reactive UI. While using react was quite nice overall,
I ended up hacking around some of the paradigm. I think things
would work out cleaner with reflex / reflex-dom, and this way SoH
development can benefit that project!
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