Spree Commerce VS KeenWrite

A good system to study is Spree https://github.com/spree/spree. It has an inventory and billing system and supports different adjustments and sale configurations. If you don't want to use it wholesale it's a solid Rails application that does most of what you want so you can use it as solid inspiration.

Spree Commerce: https://spreecommerce.org/

Maybe Spree?

I'd say Solidus and Spree are you best options rather than trying to roll out you own ecommerce solution.

When I was working on that company, that mobile ordering app, Counterless, I looked a lot at codebases like Spree, the Spree Commerce codebase. And that's how I learned a lot about how do you model an order with line items and things like that? I saw some amazing things that helped me develop an understanding and save a ton of time by looking at oh, they have a state machine. What are the ways that an order transitions through all these different states as it gets processed and charged? And how do you track all of those things?

KeenWrite is my free, open-source, cross-platform desktop Markdown editor that can produce beautifully typeset PDFs. I started working on it years ago to help write a novel that has a complex timeline and I couldn't find a text editor that would allow me to integrate a character sheet with the story itself.

https://github.com/DaveJarvis/keenwrite

Tutorials:

* https://www.youtube.com/playlist?list=PLB-WIt1cZYLm1MMx2FBG9...

Here's what I mean by using variables directly:

* https://www.youtube.com/watch?v=CFCqe3A5dFg

CommonMark doesn't propose a standard for bibliographic references. Would anyone find the editor more appealing if it had cross-references and citations?

My cross-platform desktop text editor, KeenWrite, allows users to define variables in an external YAML file. The editor calls out to Kroki[1] to convert text-based diagrams to SVG. The diagrams can reference variables and are rendered using EchoSVG[2].

KeenWrite[3] can produce PDF documentation from Markdown documents that has PlantUML diagrams with elements stored in an external, machine-readable file. Here are screenshots showing variables on the left, diagram text in the middle, and a real-time render on the right:

* https://raw.githubusercontent.com/DaveJarvis/KeenWrite/main/...

* https://raw.githubusercontent.com/DaveJarvis/KeenWrite/main/...

KeenWrite supports all diagrams offered by Kroki, which includes "diagram-plantuml".

[1]: https://kroki.io/

[2]: https://github.com/css4j/echosvg/

[3]: https://github.com/DaveJarvis/keenwrite

Although not interactive, I've created a video series that shows advanced usage of Markdown. Namely R, external variables, diagrams, math, annotations, and a different approach to metadata:

* https://www.youtube.com/playlist?list=PLB-WIt1cZYLm1MMx2FBG9...

Tutorial 4 shows basic Markdown:

* https://www.youtube.com/watch?v=qNbGSiRzx-0

The top-right of each video shows keyboard and mouse clicks to help follow along.[1] My desktop text editor, KeenWrite[2], is used in the tutorials.

[1]: https://github.com/DaveJarvis/kmcaster

[2]: https://github.com/DaveJarvis/keenwrite

https://github.com/DaveJarvis/keenwrite/blob/main/scripts/bu...

My template script provides a way to make user-friendly shell scripts. In a script that uses the template, you define the dependencies and their sources:

    DEPENDENCIES=(

I didn't create the fork, nor am I affiliated with the project. I use it in my text editor, KeenWrite to rasterize SVG.

KeenWrite Themes[1] are instructions that tell ConTeXt how to typeset XHTML documents (content) into PDF files (presentation). I made a tutorial that shows how my FOSS desktop text editor, KeenWrite[3], allows users to write in Markdown to typeset a document against a particular theme.

Before it can be used for scientific papers, it needs cross-references, which, unfortunately, aren't part of the CommonMark specification.

I posit that the vast majority of LaTeX users don't grok how to separate content from presentation. When I asked a question on TeX.SE about how to adjust the line spacing between enumerated items (spanning a couple dozen enumerated lists), the vast majority of people voted for the answer of using `\itemsep0em` to tweak each list ... individually.[4] The correct answer, IMO, is to fix the problem globally, and not waste time tweaking individual lists.

[1]: https://github.com/DaveJarvis/keenwrite-themes

[2]: https://www.youtube.com/watch?v=3QpX70O5S30

[3]: https://github.com/DaveJarvis/keenwrite

[4]: https://tex.stackexchange.com/questions/6081/reduce-space-be...