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-rw-r--r--gnu/installer.scm19
-rw-r--r--gnu/installer/newt.scm21
2 files changed, 29 insertions, 11 deletions
diff --git a/gnu/installer.scm b/gnu/installer.scm
index 586ed29a59..2f01d39d1a 100644
--- a/gnu/installer.scm
+++ b/gnu/installer.scm
@@ -333,16 +333,15 @@ selected keymap."
                    #:steps steps))
                 (const #f)
                 (lambda (key . args)
-                  ((installer-exit-error current-installer) key args)
-
-                  ;; Be sure to call newt-finish, to restore the terminal into
-                  ;; its original state before printing the error report.
-                  (call-with-output-file "/tmp/error"
-                    (lambda (port)
-                      (display-backtrace (make-stack #t) port)
-                      (print-exception port
-                                       (stack-ref (make-stack #t) 1)
-                                       key args)))
+                  (let ((error-file "/tmp/last-installer-error"))
+                    (call-with-output-file error-file
+                      (lambda (port)
+                        (display-backtrace (make-stack #t) port)
+                        (print-exception port
+                                         (stack-ref (make-stack #t) 1)
+                                         key args)))
+                    ((installer-exit-error current-installer)
+                     error-file key args))
                   (primitive-exit 1)))
 
               ((installer-exit current-installer)))))))
diff --git a/gnu/installer/newt.scm b/gnu/installer/newt.scm
index 9d9212173d..31329b5c0f 100644
--- a/gnu/installer/newt.scm
+++ b/gnu/installer/newt.scm
@@ -18,6 +18,7 @@
 
 (define-module (gnu installer newt)
   #:use-module (gnu installer record)
+  #:use-module (gnu installer utils)
   #:use-module (gnu installer newt ethernet)
   #:use-module (gnu installer newt final)
   #:use-module (gnu installer newt hostname)
@@ -25,6 +26,7 @@
   #:use-module (gnu installer newt locale)
   #:use-module (gnu installer newt menu)
   #:use-module (gnu installer newt network)
+  #:use-module (gnu installer newt page)
   #:use-module (gnu installer newt partition)
   #:use-module (gnu installer newt services)
   #:use-module (gnu installer newt timezone)
@@ -32,6 +34,7 @@
   #:use-module (gnu installer newt utils)
   #:use-module (gnu installer newt welcome)
   #:use-module (gnu installer newt wifi)
+  #:use-module (guix config)
   #:use-module (guix discovery)
   #:use-module (guix i18n)
   #:use-module (srfi srfi-26)
@@ -46,7 +49,23 @@
 (define (exit)
   (newt-finish))
 
-(define (exit-error key . args)
+(define (exit-error file key args)
+  (newt-set-color COLORSET-ROOT "white" "red")
+  (let ((width (nearest-exact-integer
+                (* (screen-columns) 0.8)))
+        (height (nearest-exact-integer
+                 (* (screen-rows) 0.7))))
+    (run-file-textbox-page
+     #:info-text (format #f (G_ "The installer has encountered an unexpected \
+problem. The backtrace is displayed below. Please report it by email to \
+<~a>.") %guix-bug-report-address)
+     #:title (G_ "Unexpected problem")
+     #:file file
+     #:exit-button? #f
+     #:info-textbox-width width
+     #:file-textbox-width width
+     #:file-textbox-height height))
+  (newt-set-color COLORSET-ROOT "white" "blue")
   (newt-finish))
 
 (define (final-page result prev-steps)