diff options
| -rw-r--r-- | guix/ui.scm | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/guix/ui.scm b/guix/ui.scm index 7d4c437354..03196dbeaf 100644 --- a/guix/ui.scm +++ b/guix/ui.scm @@ -332,39 +332,36 @@ Report bugs to: ~a.") %guix-bug-report-address) General help using GNU software: <http://www.gnu.org/gethelp/>")) (newline)) +(define (augmented-system-error-handler file) + "Return a 'system-error' handler that mentions FILE in its message." + (lambda (key proc fmt args errno) + ;; Augment the FMT and ARGS with information about TARGET (this + ;; information is missing as of Guile 2.0.11, making the exception + ;; uninformative.) + (apply throw key proc "~A: ~S" + (list (strerror (car errno)) file) + (list errno)))) + +(define-syntax-rule (error-reporting-wrapper proc (args ...) file) + "Wrap PROC such that its 'system-error' exceptions are augmented to mention +FILE." + (let ((real-proc (@ (guile) proc))) + (lambda (args ...) + (catch 'system-error + (lambda () + (real-proc args ...)) + (augmented-system-error-handler file))))) + (set! symlink ;; We 'set!' the global binding because (gnu build ...) modules and similar ;; typically don't use (guix ui). - (let ((real-symlink (@ (guile) symlink))) - (lambda (target link) - "This is a 'symlink' replacement that provides proper error reporting." - (catch 'system-error - (lambda () - (real-symlink target link)) - (lambda (key proc fmt args errno) - ;; Augment the FMT and ARGS with information about LINK (this - ;; information is missing as of Guile 2.0.11, making the exception - ;; uninformative.) - (apply throw key proc "~A: ~S" - (list (strerror (car errno)) link) - (list errno))))))) + (error-reporting-wrapper symlink (source target) target)) (set! copy-file ;; Note: here we use 'set!', not #:replace, because UIs typically use ;; 'copy-recursively', which doesn't use (guix ui). - (let ((real-copy-file (@ (guile) copy-file))) - (lambda (source target) - "This is a 'copy-file' replacement that provides proper error reporting." - (catch 'system-error - (lambda () - (real-copy-file source target)) - (lambda (key proc fmt args errno) - ;; Augment the FMT and ARGS with information about TARGET (this - ;; information is missing as of Guile 2.0.11, making the exception - ;; uninformative.) - (apply throw key proc "~A: ~S" - (list (strerror (car errno)) target) - (list errno))))))) + (error-reporting-wrapper copy-file (source target) target)) + (define (make-regexp* regexp . flags) "Like 'make-regexp' but error out if REGEXP is invalid, reporting the error |