@@ -2,6 +2,7 @@
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2018 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
+;;; Copyright © 2020 Simon Tournier <zimon.toutoune@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -20,6 +21,8 @@
(define-module (guix build hg)
#:use-module (guix build utils)
+ #:use-module (srfi srfi-34)
+ #:use-module (ice-9 format)
#:export (hg-fetch))
;;; Commentary:
@@ -35,22 +38,35 @@
"Fetch CHANGESET from URL into DIRECTORY. CHANGESET must be a valid
Mercurial changeset identifier. Return #t on success, #f otherwise."
- (invoke hg-command
- "clone" url
- "--rev" changeset
- ;; Disable TLS certificate verification. The hash of
- ;; the checkout is known in advance anyway.
- "--insecure"
- directory)
-
- ;; The contents of '.hg' vary as a function of the current
- ;; status of the Mercurial repo. Since we want a fixed
- ;; output, this directory needs to be taken out.
- ;; Since the '.hg' file is also in sub-modules, we have to
- ;; search for it in all sub-directories.
- (for-each delete-file-recursively
- (find-files directory "^\\.hg$" #:directories? #t))
-
- #t)
+ (mkdir-p directory)
+
+ (guard (c ((invoke-error? c)
+ (format (current-error-port)
+ "hg-fetch: '~a~{ ~a~}' failed with exit code ~a~%"
+ (invoke-error-program c)
+ (invoke-error-arguments c)
+ (or (invoke-error-exit-status c) ;XXX: not quite accurate
+ (invoke-error-stop-signal c)
+ (invoke-error-term-signal c)))
+ (delete-file-recursively directory)
+ #f))
+ (with-directory-excursion directory
+ (invoke hg-command
+ "clone" url
+ "--rev" changeset
+ ;; Disable TLS certificate verification. The hash of
+ ;; the checkout is known in advance anyway.
+ "--insecure"
+ directory)
+
+ ;; The contents of '.hg' vary as a function of the current
+ ;; status of the Mercurial repo. Since we want a fixed
+ ;; output, this directory needs to be taken out.
+ ;; Since the '.hg' file is also in sub-modules, we have to
+ ;; search for it in all sub-directories.
+ (for-each delete-file-recursively
+ (find-files directory "^\\.hg$" #:directories? #t))
+
+ #t)))
;;; hg.scm ends here