I’m a huge fan of Netlify, but couldn’t find any resources on building (and hosting) a PureScript site on the platform.
It turned out to be pretty straightforward, however I wanted to share a minimal example with instructions so that it’s even easier for people in the future.
A couple of points:
I found the only way to install binaries (e.g. (I was wrong about this, thanks @alex_berg)purescript or psc-package) is if they are bundled as npm packages.
As their build image doesn’t have any PureScript support, you have to download and install everything fresh each time, which can add a few minutes to build times.
In my example the build command is npm run build and publish directory is dist.
My example repo is on GitHub and you can visit it at purescript-netlify.jlk.co - although it just logs “Hello sailor!” to the console!
]]>purescript-generics-rep, however I struggled with knowing where the various generic constructors could appear (and at which level) and the only example I could find was for Maybe.
I wanted a way to view the type of the derived generic representation, so I could easily play around with different data types and see what they looked like. The easiest way (thanks @jusrin00) is to query the type of from :: forall rep a. Generic a rep => a -> rep, the function that converts from a data type to its generic representation, specialising a (the data type):
> import Data.Generic.Rep
> import Data.Maybe
> :t from :: forall a. Maybe a -> _
forall a
. Maybe a
-> Sum (Constructor "Nothing" NoArguments)
(Constructor "Just" (Argument a0))
I initially came up with an alternative (over engineered) approach, which reports the generic type in an error message using TypeString.
It’s definitely a case of “they didn’t stop to think if they should”, but you can play around with it on Try PureScript.