guix-package: Show package outputs in `--list-available'.

* guix-package.in (guix-package)[process-query]: For `list-available',
  show the outputs of each package.
* doc/guix.texi (Invoking guix-package): Update accordingly.

2 files changed, 5 insertions, 2 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 0ae9e69441..dc3473405e 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -491,7 +491,9 @@ List packages currently available in the software distribution.  When
 matches @var{regexp}.
 
 For each package, print the following items separated by tabs: its name,
-its version string, and the source location of its definition.
+its version string, the parts of the package (@code{out} for the main
+files, @code{lib} for libraries and possibly headers, etc.), and the
+source location of its definition.
 
 @end table
 
diff --git a/guix-package.in b/guix-package.in
index cf40cdc42d..286ae8db09 100644
--- a/guix-package.in
+++ b/guix-package.in
@@ -440,9 +440,10 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n"))
                                     (cons p r))))
                             '())))
            (for-each (lambda (p)
-                       (format #t "~a\t~a\t~a~%"
+                       (format #t "~a\t~a\t~a\t~a~%"
                                (package-name p)
                                (package-version p)
+                               (string-join (package-outputs p) ",")
                                (location->string (package-location p))))
                      (sort available
                            (lambda (p1 p2)