anchor.diff:             ;; modules
              #:context #:global-context #:context-dispose
              #:module
  +           #:make-module
              #:dispose-module
              #:data-layout
              #:target
  
positive.code:            #:tail-call-p
             #:add-incoming #:count-incoming #:incoming-value #:incoming-block
             ;; instruction builders
             #:builder #:position-builder #:position-builder-before
             #:position-builder-at-end #:insertion-block
             #:clear-insertion-position #:insert-into-builder #:dispose-builder
             #:build-ret #:build-br #:build-cond-br #:build-switch #:build-invoke
  
negative.code: (defpackage llvm
      (:documentation
       "In general, names are from the C interface (see include/llvm-c), translated
      as follows:
  
    • “LLVM” prefix is dropped
  