diff options
Diffstat (limited to 'guix/scripts/copy.scm')
| -rw-r--r-- | guix/scripts/copy.scm | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/guix/scripts/copy.scm b/guix/scripts/copy.scm index 52b476db54..07357af420 100644 --- a/guix/scripts/copy.scm +++ b/guix/scripts/copy.scm @@ -62,6 +62,10 @@ number (or #f) corresponding to SPEC." (x (leave (G_ "~a: invalid SSH specification~%") spec)))) +(define (warn-if-empty items) + (when (null? items) + (warning (G_ "no arguments specified, nothing to copy~%")))) + (define (send-to-remote-host local target opts) "Send ITEMS to TARGET. ITEMS is a list of store items or package names; for ; package names, build the underlying packages before sending them." @@ -69,6 +73,7 @@ package names, build the underlying packages before sending them." (ssh-spec->user+host+port target)) ((drv items) (options->derivations+files local opts))) + (warn-if-empty items) (and (build-derivations local drv) (let* ((session (open-ssh-session host #:user user #:port (or port 22))) @@ -94,7 +99,9 @@ package names, build the underlying packages before sending them." (let*-values (((drv items) (options->derivations+files local opts)) ((retrieved) - (retrieve-files local items remote #:recursive? #t))) + (begin + (warn-if-empty items) + (retrieve-files local items remote #:recursive? #t)))) (close-connection remote) (disconnect! session) (format #t "~{~a~%~}" retrieved) |