Your Next Meal: a Guile Web App
I started developing a web application in Guile. The goal of this application is to help me choose the content of my meals according to my tastes, my lifestyle and my nutritional balance! If I consume better, my health and the planet can only benefit.
In this article, I share with you my current workflow!
Best wishes to all of you!
Development
I open my terminal. Using an alias, the command cdynm places me in the directory of my application.
Since I created the package definition for my application (in a file I named guix.scm), I can generate a shell prepared for its own development with the command :
$ guix environment -l guix.scm
Now I can start the app with the command :
[dev]$ art work
Loading conf/artanis.conf...done.
Session with SIMPLE backend init done!
Loading models...
Loading controllers...
Loading restful API...
Regenerating route cache ...
Server core: ragnarok
http://127.0.0.1:3000
Anytime you want to quit just try Ctrl+C, thanks!
Then it's time for the hack!
Not having yet found a way to do REPL Driven Development, I got into the habit of restarting the server manually at each modification. The restart is fast for the moment but it could become annoying.
When I am satisfied with my changes, I push them to the git repository.
Deployment
I am the admin of a Digital Ocean droplet powering a Guix System. I connect to it with ssh thanks to a small alias sshynm. Then I connect to the active Screen session in which my application runs:
screen -r
From there, I stop the application, pull the last changes in the source code of the application and restart it:
# killall .art-real && git pull && guix environment -l guix.scm -- art work &
Finally, I detach myself from the Screen session with C-a-d or C-a C-d and the droplet with C-d.
The end!
My wish list
Guile-Hall support
Until the next release of Guile-Hall, it is not possible to manage an application created with Artanis because some file types are not supported by Guile-Hall.
Guix full support
Today, Artanis is based on Guile-2.2 as well as on libraries whose versions are in conflict with the Guix distribution (guile-json for example). For my use, the workaround via a development environment is enough but it might not last!
Link to the project repository : https://framagit.org/Jeko/ynm
Link to the project website: https://yournextmeal.tech
Thank you very much for reading this article!
Don't hesitate to give me your opinion, suggest an idea for improvement, or ask a question! To do so, leave a comment below or contact me.
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