-- my-egg.egg

((synopsis "test egg")
 (dependencies srfi-4)
 (test-dependencies test)
 (components
   (extension
     my-egg
     (source my-egg.sld)))

--- my-egg.sld

(module my-egg *
  (import (chicken base) (srfi-4))

  (define foo u8vector))

--- set this environment

export CHICKEN_INSTALL_PREFIX=/tmp/venv/
export CHICKEN_INSTALL_REPOSITORY=/tmp/venv/
export CHICKEN_REPOSITORY_PATH=/tmp/venv/lib/chicken:/home/jeremy/.local/share/basket/5.4.0/lib/chicken/11
export PATH="/tmp/venv/bin:$PATH"

--- invocation

$ chicken-install salmonella
$ salmonella