CL-PPCRE actually doesn't really do what most people think it does, cf https://applied-langua.ge/posts/omrn-compiler.html#orgd52b4a... (which instead does).

A small tidbit: you don't actually need full syntactic macros to get compile time computation in CL, compiler macros (https://www.lispworks.com/documentation/HyperSpec/Body/03_bb...) suffice.