diff options
Diffstat (limited to 'guix/build/emacs-utils.scm')
| -rw-r--r-- | guix/build/emacs-utils.scm | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/guix/build/emacs-utils.scm b/guix/build/emacs-utils.scm index 60a754b9e9..1684bf3262 100644 --- a/guix/build/emacs-utils.scm +++ b/guix/build/emacs-utils.scm @@ -3,6 +3,7 @@ ;;; Copyright © 2014 Alex Kost <alezost@gmail.com> ;;; Copyright © 2018, 2020, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com> ;;; Copyright © 2019 Liliana Marie Prikler <liliana.prikler@gmail.com> +;;; Copyright © 2022 Fredrik Salomonsson <plattfot@posteo.net> ;;; ;;; This file is part of GNU Guix. ;;; @@ -22,10 +23,19 @@ (define-module (guix build emacs-utils) #:use-module (guix build utils) #:use-module (ice-9 format) + #:use-module (ice-9 popen) + #:use-module (ice-9 rdelim) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) #:export (%emacs emacs-batch-eval emacs-batch-edit-file emacs-batch-disable-compilation + emacs-batch-script + + emacs-batch-error? + emacs-batch-error-message + emacs-generate-autoloads emacs-byte-compile-directory @@ -69,6 +79,26 @@ true, evaluate using dynamic scoping." (add-file-local-variable 'no-byte-compile t) (basic-save-buffer)))) +(define-condition-type &emacs-batch-error &error + emacs-batch-error? + (message emacs-batch-error-message)) + +(define (emacs-batch-script expr) + "Execute the Elisp code EXPR in Emacs batch mode and return output." + (let* ((error-pipe (pipe)) + (port (parameterize ((current-error-port (cdr error-pipe))) + (open-pipe* + OPEN_READ + (%emacs) "--quick" "--batch" + (string-append "--eval=" (expr->string expr))))) + (output (read-string port)) + (status (close-pipe port))) + (close-port (cdr error-pipe)) + (unless (zero? status) + (raise (condition (&emacs-batch-error + (message (read-string (car error-pipe))))))) + output)) + (define (emacs-generate-autoloads name directory) "Generate autoloads for Emacs package NAME placed in DIRECTORY." (let* ((file (string-append directory "/" name "-autoloads.el")) |