$ csc private.sld 

Error: during expansion of (define-library ...) - call of non-procedure: #<unbound value>

	Call history:

	<syntax>	 (##core#begin (define-library (json-rpc private) (export json-rpc-log-file json-rpc-log-level satisf...
	<syntax>	 (define-library (json-rpc private) (export json-rpc-log-file json-rpc-log-level satisfies-log-level?...	<--

Error: shell command terminated with non-zero exit status 70: '/nix/store/ylg3s6b2aqa9rbq5ra46fhrab6kbz43c-chicken-6.0.0-8c16ffb/bin/chicken' 'private.sld' '-output-file' 'private.c'