weather: Use (guix progress) for progress report.

* guix/progress.scm (start-progress-reporter!, stop-progress-reporter!)
(progress-reporter-report!): New procedures.
* guix/scripts/weather.scm (call-with-progress-reporter): New procedure.
(package-outputs)[update-progress!]: Remove.
Use 'call-with-progress-reporter' instead.
(guix-weather): Parameterize 'current-terminal-columns'.

1 files changed, 22 insertions, 0 deletions

diff --git a/guix/progress.scm b/guix/progress.scm
index 1ee7ec319f..0ca5c08782 100644
--- a/guix/progress.scm
+++ b/guix/progress.scm
@@ -31,6 +31,10 @@
             progress-reporter?
             call-with-progress-reporter
 
+            start-progress-reporter!
+            stop-progress-reporter!
+            progress-reporter-report!
+
             progress-reporter/silent
             progress-reporter/file
             progress-reporter/bar
@@ -60,6 +64,24 @@ stopped."
     (($ <progress-reporter> start report stop)
      (dynamic-wind start (lambda () (proc report)) stop))))
 
+(define (start-progress-reporter! reporter)
+  "Low-level procedure to start REPORTER."
+  (match reporter
+    (($ <progress-reporter> start report stop)
+     (start))))
+
+(define (progress-reporter-report! reporter)
+  "Low-level procedure to lead REPORTER to emit a report."
+  (match reporter
+    (($ <progress-reporter> start report stop)
+     (report))))
+
+(define (stop-progress-reporter! reporter)
+  "Low-level procedure to stop REPORTER."
+  (match reporter
+    (($ <progress-reporter> start report stop)
+     (stop))))
+
 (define progress-reporter/silent
   (make-progress-reporter noop noop noop))