diff options
Diffstat (limited to 'guix/import/cran.scm')
| -rw-r--r-- | guix/import/cran.scm | 91 |
1 files changed, 59 insertions, 32 deletions
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 @@ bioconductor package NAME, or #F if the package is unknown." (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 @@ from ~a: ~a (~a)~%") (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 @@ from the alist META, which was derived from the R package's DESCRIPTION file." ((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 @@ from the alist META, which was derived from the R package's DESCRIPTION file." (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 @@ s-expression corresponding to that package, or #f on failure." (&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)) |