Guile Potluck 2021 Part 1: Genshou and Anguish

Preface

Guile Potluck 2021 was an event where hackers got to advertise their exciting new projects.  It wrapped up a few weeks ago, and at that time I was my intention to blog my way through the entrants right away.  Well, I have not been expedient on that front.
I'm so very sorry it has taken me so long to get back to Guile Potluck 2021.  Somewhere between family, kids, the day job, actually working on Guile, and the vague depression that quarantine seems to instill in me, it all got away from me.
But hey, let's see what we've got. I'll start from the end, and work my way back to the beginning.

Genshou, by Walter Lewis

https://git.sr.ht/~wklew/genshou

Here, wklew implements an extensible effects system, that allows stateful computations without any mutation.  Thought provoking stuff, especially if you like pondering monads, denotational semantics and other such things.

Honestly, it is projects like this that activate my impostor syndrome with regards to Scheme. Many Scheme hackers approach it from a deep interest in Computer Science, and mostly I look at their work in awe whilst carrying on with my second-hand understanding of programming that somehow I've built a career on.
 

Anguish, by Rutger van Beusekom

https://gitlab.com/rutger.van.beusekom/anguish
 

 

rutger.van.beusekom has written as parser for the POSIX sh language
using PEG grammar, which he hopes to convert into a full fledged shell
in future. At the moment, it converts shell statements into an SXML-like representation.

I am excited to see someone exercise Guile's PEG parser, which is both powerful and under-utilized.

Guile Potluck 2021

 Hello All-

In celebration of the (slightly belated) 10-year anniversary of Guile v2.0, we're having another Guile Potluck!  The Guile Potluck is a randomly annual event to give people a chance to show off their Guile projects and skills.  Think of it as a game jam, but, not constrained to games. 

To participate, on or before Mar 6, send an email to guile-user@gnu.org with Potluck in the subject line. Please include instructions on how to find your entry, which could be anything you like.  For example,

   - a script showing off some feature of Guile or your favorite Guile library
   - a blog post describing something interesting about Guile
   - an updated release of a neglected library
   - a mini-game
   - a graphical or audio demoscene-type demo
   
There probably won't be any prizes.  But there will definitely be an e-mail and blog post about the entries.

I'd love to see y'all participate. Feel free to e-mail me at spk121@yahoo.com if you'd like to discuss anything directly.

And please forward this info along, if you know of any other corners of the internet that might be interested.

Regards,
Mike Gran