hissp VS phel-lang

Hissp is a Python library that can compile a whole program into one Python expression.

If you want Python to be as customizable as Lissp, check out Hissp (and Hebigo).

Hissp is really cool for metaprogramming Python. There's also macropy, but it's harder to use.

I prefer https://github.com/gilch/hissp, where Hy has to use shims to pretend statements are expressions, Hissp just targets the expression subset in the first place. (though as you mentioned, hy has a lot of literature and support around it, where as you're going to have to find your own way around hissp)

No shortage of options, e.g. Dg, Mochi, Coconut, and Hebigo (based on Hissp[1]).

[1]: https://github.com/gilch/hissp

If you want Lisp metaprogramming plus Python ecosystem, check out Hissp

Hissp is really interesting. Read through the docs and you'll understand Python more deeply. It works well with Toolz and Pyrsistent.

Not only PHP: "modern technologies I've gone on to learn and be experienced with in more recent years."

Although, there's a Lisp-inspired PHP called Phel: https://phel-lang.org/

And PHP typing with version 7+

You can discover everything about this language in the official website: https://phel-lang.org/

Then sorry because I wasn't clear or the project itself is not clear enough. Maybe this other project using Gacela can help illustrating how it is connected to the infrastructure of the architecture: https://github.com/phel-lang/phel-lang/tree/master/src/php (check, for example, the modules Compiler or Run).

Phel (https://phel-lang.org/) - built with PHP. Works with PHP ecosystem. Compiles down to php.