I'm particularly proud of my ELF hack to allow the interpreter to introspect into a lisp code section at runtime without any /proc/self/exe shenanigans. Wish other languages would adopt it.
Top comment and its replies talk about linking the lisp code into a self-contained, easily distributable application:
I think I addressed that problem adequately. I can create applications by copying the interpreter and patching in some special ELF segments containing lisp modules. The mold linker even added features to make it easy and optimal.
Since there is no libc nonsense, Linux compatibility depends only on the system calls used. Theoretically, applications could target kernels from the 90s.
