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import: cran: Try import via CRAN if package is not on Bioconductor.

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* guix/import/cran.scm (fetch-description): Return #F on failure.
(cran->guix-package): Retry from CRAN on failure to fetch description from
bioconductor.
This commit is contained in:
Ricardo Wurmus 2018-12-20 09:37:58 +01:00
parent 0290f533cc
commit 10a1cacb16
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GPG key ID: 197A5888235FACAC
1 changed files with 11 additions and 6 deletions
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17
guix/import/cran.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015, 2016, 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
@ -23,6 +23,7 @@
#:use-module (ice-9 regex)
#:use-module ((ice-9 rdelim) #:select (read-string read-line))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-2)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (ice-9 receive)
@ -180,9 +181,9 @@ from ~s: ~a (~s)~%"
;; Currently, the bioconductor project does not offer a way to access a
;; package's DESCRIPTION file over HTTP, so we determine the version,
;; download the source tarball, and then extract the DESCRIPTION file.
(let* ((version (latest-bioconductor-package-version name))
(url (car (bioconductor-uri name version)))
(tarball (with-store store (download-to-store store url))))
(and-let* ((version (latest-bioconductor-package-version name))
(url (car (bioconductor-uri name version)))
(tarball (with-store store (download-to-store store url))))
(call-with-temporary-directory
(lambda (dir)
(parameterize ((current-error-port (%make-void-port "rw+"))
@ -346,8 +347,12 @@ from the alist META, which was derived from the R package's DESCRIPTION file."
(lambda* (package-name #:optional (repo 'cran))
"Fetch the metadata for PACKAGE-NAME from REPO and return the `package'
s-expression corresponding to that package, or #f on failure."
(and=> (fetch-description repo package-name)
(cut description->package repo <>)))))
(let ((description (fetch-description repo package-name)))
(if (and (not description)
(eq? repo 'bioconductor))
;; Retry import from CRAN
(cran->guix-package package-name 'cran)
(description->package repo description))))))
(define* (cran-recursive-import package-name #:optional (repo 'gnu))
(recursive-import package-name repo