DSLs are a waste of time

You can pry vim from my cold dead hands. After pressing thrice of course. You may even get me to install a syntax highlighting file somewhere and maybe use netrw if possible. But a random server you are adminning just isn't the same as your average developers single laptop.

It certainly wastes a lot of my time because it is considered just a DSL and not a "real" programming language, and therefore doesn't get the same kind of attention towards making it better that "real" programming languages get. Maybe there is something to the original thesis.

Like, why can't I import shared query modules to compose into my queries? I can't imagine any other programming language without that feature. The execution engines support it in concept, allowing you to get there with some painful copy/pasting or using code generation (which seems to be how most people use SQL these days[1]). But because SQL is seen as just a DSL it doesn't get any attention towards making the language better.

[1] Which I'm not sure SQL is all that good at being the assembly language of databases either. It is strangely irregular.

The problem here is that while you can say “Terraform is more than a DSL” - if you ever back the layers or try have a conversation with someone who’s a true dyed in the wool Terraform zealot and start to try and understand where they’re coming from, you begin to realise they don’t love Terraform, they love this weird half language because they’re an expert in it, and they’ve built their entire career on being an expert on something you can only use for one specific use case.

That's from the article, and that really sounds a lot like talking to someone that knows and loved regular expressions (and I count myself as one of those people). The alternative, which is often done in lower level languages, is either some simple nested conditionals or a state machine, and plenty of people choose to just write state machines. I mean, that's all a regular expression is anyway, a shorthand expression for building state machines to process strings.

It should be no surprise that there are plenty of people that think regular expressions are wasteful and you should just write your own state machine (fewer than there were in the past, but they exist). Regular expressions are exactly like everything else that's being discusses in the article, but many people like them. Perhaps that's a point we should focus on to determine what makes a DSL successful and good compared to the alternative.

I'm not sure if I'm being redundant, because I reloaded a few times and see that _many_ posts have been made in the short time since I started looking at this article and reading comments. But, the discussing seems to be bifurcating into different camps. Do you assume that the blog and discussion are narrowly scoped to sysop/devops problems, or a general diatribe on programming languages and product design?

For product design, a big part of the problem is choosing your audience. The blog author mentions being happy with a prior ops DSL because it let him think he's not being a "software developer". In my opinion, to target this type of user is to always be on the treadmill of toy DSLs. You have to over-simplify something to appeal to someone who wants to use it without deeper engagement in a programming/software development mindset. But then you have other users who hit the toy's limits and want more, and you either provide two entirely different products or start compromising the simplicity to add escape hatches. In the end, I think you'll always find that you need more of an API/framework in a proper programming language if you want to support all the use cases with one solution. Or you make a poor approximate of a programming language, quite likely repeating most mistakes in the ~50 year history of scripting languages.

There has been a lot of this churn in the sysop/devops space where system administrators are being given more complex and dynamic deployment problems. (Facing their devops mirror-world where programmers are being given more operations duties). This tension also exists in other domains, but I'd say the systems operations space has much more stark culture of "scripting" and "config files" as a distinct thing from "programming" and it shows in the tools and perspectives.