We're following Abdulaziz Ghuloum's "An Incremental Approach to
Compiler Construction" and trying to build a simple scheme-to-x86
compiler.

References:
  Abdulaziz Ghuloum - An Incremental Approach to Compiler Construction
    http://scheme2006.cs.uchicago.edu/11-ghuloum.pdf

  Abdulaziz Ghuloum - Compilers: Backend to Frontend and Back to Front Again
    https://raw.githubusercontent.com/namin/inc/refs/heads/master/docs/tutorial.pdf
  This is an extended draft tutorial

  namin / inc - someone else's implementation of the same compiler
  we're making
    https://github.com/namin/inc