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import: Gracefully report import failures. 

Previously, something like 'guix import gnu which' would spit out a
backtrace if, say, the 'which' tarball could not be authenticated.

* guix/upstream.scm (download-tarball): Mention failure modes in
docstring.
* guix/import/gnu.scm (gnu-package->sexp): Return #f when
'download-tarball' returns #f.
* guix/scripts/import.scm (guix-import): Call 'leave' when IMPORTER does
not return a (package ...) sexp.
This commit is contained in:
Ludovic Courtès 2016-05-17 13:41:07 +02:00
parent 787afdd0f1
commit 149590380a
No known key found for this signature in database
GPG Key ID: 090B11993D9AEBB5
3 changed files with 35 additions and 26 deletions
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20
guix/import/gnu.scm
View File

@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -55,8 +55,8 @@
(define* (gnu-package->sexp package release
#:key (key-download 'interactive))
"Return the 'package' sexp for the RELEASE (a <gnu-release>) of PACKAGE (a
<gnu-package>). Use KEY-DOWNLOAD as the OpenPGP key download policy (see
'download-tarball' for details.)"
<gnu-package>), or #f upon failure. Use KEY-DOWNLOAD as the OpenPGP key
download policy (see 'download-tarball' for details.)"
(define name
(gnu-package-name package))
@ -79,9 +79,10 @@
(find (cute string-suffix? (string-append archive-type ".sig") <>)
(upstream-source-signature-urls release)))
(let ((tarball (with-store store
(download-tarball store url sig-url
#:key-download key-download))))
(with-store store
(match (download-tarball store url sig-url
#:key-download key-download)
((? string? tarball)
`(package
(name ,name)
(version ,(upstream-source-version release))
@ -91,13 +92,16 @@
,(string-append ".tar." archive-type)))
(sha256
(base32
,(bytevector->nix-base32-string (file-sha256 tarball))))))
,(bytevector->nix-base32-string
(file-sha256 tarball))))))
(build-system gnu-build-system)
(synopsis ,(gnu-package-doc-summary package))
(description ,(gnu-package-doc-description package))
(home-page ,(match (gnu-package-doc-urls package)
((head . tail) (qualified-url head))))
(license find-by-yourself!))))
(license find-by-yourself!)))
(#f ;failure to download or authenticate the tarball
#f))))
(define* (gnu->guix-package name
#:key (key-download 'interactive))

8
guix/scripts/import.scm
View File

@ -107,6 +107,10 @@ Run IMPORTER with ARGS.\n"))
(show-version-and-exit "guix import"))
((importer args ...)
(if (member importer importers)
(let ((expr (apply (resolve-importer importer) args)))
(pretty-print expr (newline-rewriting-port (current-output-port))))
(match (apply (resolve-importer importer) args)
((and expr ('package _ ...))
(pretty-print expr (newline-rewriting-port
(current-output-port))))
(x
(leave (_ "'~a' import failed~%") importer)))
(leave (_ "~a: invalid importer~%") importer)))))

5
guix/upstream.scm
View File

@ -143,8 +143,9 @@ no update is needed or known."
#:key (key-download 'interactive))
"Download the tarball at URL to the store; check its OpenPGP signature at
SIGNATURE-URL, unless SIGNATURE-URL is false. On success, return the tarball
file name. KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys;
allowed values: 'interactive' (default), 'always', and 'never'."
file name; return #f on failure (network failure or authentication failure).
KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
values: 'interactive' (default), 'always', and 'never'."
(let ((tarball (download-to-store store url)))
(if (not signature-url)
tarball