~ruther/guix-local: emacs: Add code to pipe guix output to external program.

8b9ceb8d03ab7b67cab9ce96b66f197c331ccc04 — Alex Kost 10 years ago cdd383e

emacs: Add code to pipe guix output to external program.

* emacs/guix-main.scm: Use (ice-9 popen) module.
  (pipe-guix-output): New procedure.

patch browse .tar.gz

1 files changed, 10 insertions(+), 0 deletions(-)

M emacs/guix-main.scm

M emacs/guix-main.scm => emacs/guix-main.scm +10 -0

@@ 45,6 45,7 @@
 (use-modules
  (ice-9 vlist)
  (ice-9 match)
+ (ice-9 popen)
  (srfi srfi-1)
  (srfi srfi-2)
  (srfi srfi-11)


@@ 949,6 950,15 @@ GENERATIONS is a list of generation numbers."
   "Return string with 'guix COMMANDS ... --help' output."
   (apply guix-command-output `(,@commands "--help")))
 
+(define (pipe-guix-output guix-args command-args)
+  "Run 'guix GUIX-ARGS ...' command and pipe its output to a shell command
+defined by COMMAND-ARGS.
+Return #t if the shell command was executed successfully."
+  (let ((pipe (apply open-pipe* OPEN_WRITE command-args)))
+    (with-output-to-port pipe
+      (lambda () (apply guix-command guix-args)))
+    (zero? (status:exit-val (close-pipe pipe)))))
+
 
 ;;; Lists of packages, lint checkers, etc.