Guile is unable to handle more than one define-library per file. For example, this is "mylibs.sld", which contains two define-library:
(define-library (example mylib) (import (scheme base)) (export f) (begin (define (f x) (+ x 1)))) (define-library (example main) (import (scheme base) (scheme write) (example mylib)) (export main) (begin (define (main) (display "The answer is: ") (display (f 1)) (newline)))) When loading this file into Guile using "guile -l mylibs.sld", or by using (load "mylibs.sld"), Guile will show this error: ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0 ;;; or pass the --no-auto-compile argument to disable. ;;; compiling /home/user/mylibs.sld ;;; WARNING: compilation of /home/user/mylibs.sld failed: ;;; Syntax error: ;;; unknown location: definition in expression context, where definitions are not allowed, in form (define (main) (display "The answer is: ") (display (f 1)) (newline)) ice-9/psyntax.scm:2794:12: In procedure syntax-violation: Syntax error: /home/user/mylibs.sld:14:4: definition in expression context, where definitions are not allowed, in form (define (main) (display "The answer is: ") (display (f 1)) (newline)) The error is always caused by the second define-library. Apparently, Guile no longer understands that define-library is a special form by the time the second define-library is evaluated. Is it not possible to define two R7RS libraries in the same file? Guile version: 3.0.7