chicken-status —
    list information about installed libraries
  
    chicken-status | 
    [OPTION ...] NAME ... | 
  
chicken-status lists information about
    installed CHICKEN Scheme extension libraries.
If NAME is given, information is limited to
    the specified extension(s). Otherwise, all extensions are shown.
The program accepts following arguments:
  -h,
    -help 
  - Show usage and exit.
 
  -version 
  - Show version and exit.
 
  -c,
    -components 
  - List installed components.
 
  -f,
    -files 
  - List installed files.
 
  -list 
  - List installed egg versions in a format suitable for use with
      chicken-install(1)'s
      
-override or
      -from-list options. 
  -match 
  - Treat NAME as a glob pattern.
 
  -host 
  - When cross-compiling, only show host extensions.
 
  -target 
  - When cross-compiling, only show target extensions.
      “override” format.
 
  -cached 
  - List eggs that are currently cached.
 
The following environment variables change the behaviour of
    chicken-status:
  CHICKEN_INSTALL_REPOSITORY 
  - The path where extension libraries are installed. Defaults to the package
      library path selected during configuration (usually
      $prefix/lib/chicken/<binary-version>).
 
  CHICKEN_REPOSITORY_PATH 
  - One or more directories holding extension libraries. Defaults to the
      installation repository.
 
  CHICKEN_EGG_CACHE 
  - Location where eggs are retrieved and built.
 
  - $XDG_CACHE_HOME/chicken-install/
 
  - Default directory for cached eggs. (
      
$XDG_CACHE_HOME defaults to
      $HOME/.cache ) 
The chicken-status utility exits 0
    on success, and >0 if an error occurs.