From 450e1dd52e0a34bb00fcb655956e40d69d50a331 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Fri, 29 Oct 2021 21:26:16 +0200 Subject: import: cran: Allow imports of a specific version. * guix/import/cran.scm (download): Handle the case where URL is a list. (fetch-description-from-tarball): New procedure. (fetch-description): Add #:version parameter. Honor it when REPOSITORY is 'cran. Use 'fetch-description-from-tarball' when REPOSITORY is 'bioconductor. (description->package): SOURCE-URL may now be a list. (cran->guix-package): Pass VERSION to 'fetch-description'. (cran-recursive-import): Add #:version parameter. * guix/scripts/import/cran.scm (guix-import-cran): Expect a spec rather than a mere package name. * doc/guix.texi (Invoking guix import): Document it. --- guix/import/cran.scm | 91 ++++++++++++++++++++++++++++---------------- guix/scripts/import/cran.scm | 35 +++++++++-------- 2 files changed, 78 insertions(+), 48 deletions(-) (limited to 'guix') diff --git a/guix/import/cran.scm b/guix/import/cran.scm index 07a5656cf1..7478866515 100644 --- a/guix/import/cran.scm +++ b/guix/import/cran.scm @@ -229,26 +229,61 @@ (define download (let ((store-directory (add-to-store store (basename url) #t "sha256" dir))) (values store-directory changeset))))))) - (else (download-to-store store url))))))) - -(define (fetch-description repository name) + (else + (match url + ((? string?) + (download-to-store store url)) + ((urls ...) + ;; Try all the URLs. A use case where this is useful is when one + ;; of the URLs is the /Archive CRAN URL. + (any (cut download-to-store store <>) urls))))))))) + +(define (fetch-description-from-tarball url) + "Fetch the tarball at URL, extra its 'DESCRIPTION' file, parse it, and +return the resulting alist." + (match (download url) + (#f #f) + (tarball + (call-with-temporary-directory + (lambda (dir) + (parameterize ((current-error-port (%make-void-port "rw+")) + (current-output-port (%make-void-port "rw+"))) + (and (zero? (system* "tar" "--wildcards" "-x" + "--strip-components=1" + "-C" dir + "-f" tarball "*/DESCRIPTION")) + (description->alist + (call-with-input-file (string-append dir "/DESCRIPTION") + read-string))))))))) + +(define* (fetch-description repository name #:optional version) "Return an alist of the contents of the DESCRIPTION file for the R package -NAME in the given REPOSITORY, or #f in case of failure. NAME is +NAME at VERSION in the given REPOSITORY, or #f in case of failure. NAME is case-sensitive." (case repository ((cran) - (let ((url (string-append %cran-url name "/DESCRIPTION"))) - (guard (c ((http-get-error? c) - (warning (G_ "failed to retrieve package information \ + (guard (c ((http-get-error? c) + (warning (G_ "failed to retrieve package information \ from ~a: ~a (~a)~%") - (uri->string (http-get-error-uri c)) - (http-get-error-code c) - (http-get-error-reason c)) - #f)) - (let* ((port (http-fetch url)) - (result (description->alist (read-string port)))) - (close-port port) - result)))) + (uri->string (http-get-error-uri c)) + (http-get-error-code c) + (http-get-error-reason c)) + #f)) + ;; When VERSION is true, we have to download the tarball to get at its + ;; 'DESCRIPTION' file; only the latest one is directly accessible over + ;; HTTP. + (if version + (let ((urls (list (string-append "mirror://cran/src/contrib/" + name "_" version ".tar.gz") + (string-append "mirror://cran/src/contrib/Archive/" + name "/" + name "_" version ".tar.gz")))) + (fetch-description-from-tarball urls)) + (let* ((url (string-append %cran-url name "/DESCRIPTION")) + (port (http-fetch url)) + (result (description->alist (read-string port)))) + (close-port port) + result)))) ((bioconductor) ;; Currently, the bioconductor project does not offer a way to access a ;; package's DESCRIPTION file over HTTP, so we determine the version, @@ -257,22 +292,13 @@ (define (fetch-description repository name) (and (latest-bioconductor-package-version name) #t) (and (latest-bioconductor-package-version name 'annotation) 'annotation) (and (latest-bioconductor-package-version name 'experiment) 'experiment))) + ;; TODO: Honor VERSION. (version (latest-bioconductor-package-version name type)) (url (car (bioconductor-uri name version type))) - (tarball (download url))) - (call-with-temporary-directory - (lambda (dir) - (parameterize ((current-error-port (%make-void-port "rw+")) - (current-output-port (%make-void-port "rw+"))) - (and (zero? (system* "tar" "--wildcards" "-x" - "--strip-components=1" - "-C" dir - "-f" tarball "*/DESCRIPTION")) - (and=> (description->alist (with-input-from-file - (string-append dir "/DESCRIPTION") read-string)) - (lambda (meta) - (if (boolean? type) meta - (cons `(bioconductor-type . ,type) meta)))))))))) + (meta (fetch-description-from-tarball url))) + (if (boolean? type) + meta + (cons `(bioconductor-type . ,type) meta)))) ((git) (and (string-prefix? "http" name) ;; Download the git repository at "NAME" @@ -485,7 +511,7 @@ (define (description->package repository meta) ((bioconductor) (list (assoc-ref meta 'bioconductor-type))) (else '()))) - ((url rest ...) url) + ((urls ...) urls) ((? string? url) url) (_ #f))))) (git? (assoc-ref meta 'git)) @@ -592,7 +618,7 @@ (define cran->guix-package (lambda* (package-name #:key (repo 'cran) version) "Fetch the metadata for PACKAGE-NAME from REPO and return the `package' s-expression corresponding to that package, or #f on failure." - (let ((description (fetch-description repo package-name))) + (let ((description (fetch-description repo package-name version))) (if description (description->package repo description) (case repo @@ -610,8 +636,9 @@ (define cran->guix-package (&message (message "couldn't find meta-data for R package"))))))))))) -(define* (cran-recursive-import package-name #:key (repo 'cran)) +(define* (cran-recursive-import package-name #:key (repo 'cran) version) (recursive-import package-name + #:version version #:repo repo #:repo->guix-package cran->guix-package #:guix-name cran-guix-name)) diff --git a/guix/scripts/import/cran.scm b/guix/scripts/import/cran.scm index 3e4b038cc4..2934d4300a 100644 --- a/guix/scripts/import/cran.scm +++ b/guix/scripts/import/cran.scm @@ -27,8 +27,8 @@ (define-module (guix scripts import cran) #:use-module (guix import utils) #:use-module (guix scripts import) #:use-module (srfi srfi-1) - #:use-module (srfi srfi-11) #:use-module (srfi srfi-37) + #:use-module (srfi srfi-71) #:use-module (ice-9 match) #:use-module (ice-9 format) #:export (guix-import-cran)) @@ -98,21 +98,24 @@ (define (parse-options) (reverse opts)))) (parameterize ((%input-style (assoc-ref opts 'style))) (match args - ((package-name) - (if (assoc-ref opts 'recursive) - ;; Recursive import - (with-error-handling - (map package->definition - (filter identity - (cran-recursive-import package-name - #:repo (or (assoc-ref opts 'repo) 'cran))))) - ;; Single import - (let ((sexp (cran->guix-package package-name - #:repo (or (assoc-ref opts 'repo) 'cran)))) - (unless sexp - (leave (G_ "failed to download description for package '~a'~%") - package-name)) - sexp))) + ((spec) + (let ((name version (package-name->name+version spec))) + (if (assoc-ref opts 'recursive) + ;; Recursive import + (with-error-handling + (map package->definition + (filter identity + (cran-recursive-import name + #:version version + #:repo (or (assoc-ref opts 'repo) 'cran))))) + ;; Single import + (let ((sexp (cran->guix-package name + #:version version + #:repo (or (assoc-ref opts 'repo) 'cran)))) + (unless sexp + (leave (G_ "failed to download description for package '~a'~%") + name)) + sexp)))) (() (leave (G_ "too few arguments~%"))) ((many ...) -- cgit v1.2.3