diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/import/github.scm | 198 | ||||
| -rw-r--r-- | guix/scripts/refresh.scm | 3 |
2 files changed, 200 insertions, 1 deletions
diff --git a/guix/import/github.scm b/guix/import/github.scm new file mode 100644 index 0000000000..c696dcb363 --- /dev/null +++ b/guix/import/github.scm @@ -0,0 +1,198 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com> +;;; +;;; This file is part of GNU Guix. +;;; +;;; GNU Guix is free software; you can redistribute it and/or modify it +;;; under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 3 of the License, or (at +;;; your option) any later version. +;;; +;;; GNU Guix is distributed in the hope that it will be useful, but +;;; WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;;; GNU General Public License for more details. +;;; +;;; You should have received a copy of the GNU General Public License +;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. + +(define-module (guix import github) + #:use-module (ice-9 match) + #:use-module (srfi srfi-1) + #:use-module (json) + #:use-module (guix utils) + #:use-module ((guix download) #:prefix download:) + #:use-module (guix import utils) + #:use-module (guix packages) + #:use-module (guix upstream) + #:use-module (gnu packages) + #:use-module (web uri) + #:export (%github-updater)) + +(define (json-fetch* url) + "Return a list/hash representation of the JSON resource URL, or #f on +failure." + (call-with-output-file "/dev/null" + (lambda (null) + (with-error-to-port null + (lambda () + (call-with-temporary-output-file + (lambda (temp port) + (and (url-fetch url temp) + (call-with-input-file temp json->scm))))))))) + +(define (find-extension url) + "Return the extension of the archive e.g. '.tar.gz' given a URL, or +false if none is recognized" + (find (lambda x (string-suffix? (first x) url)) + (list ".tar.gz" ".tar.bz2" ".tar.xz" ".zip" ".tar"))) + +(define (updated-github-url old-package new-version) + ;; Return a url for the OLD-PACKAGE with NEW-VERSION. If no source url in + ;; the OLD-PACKAGE is a GitHub url, then return false. + + (define (updated-url url) + (if (string-prefix? "https://github.com/" url) + (let ((ext (find-extension url)) + (name (package-name old-package)) + (version (package-version old-package)) + (prefix (string-append "https://github.com/" + (github-user-slash-repository url))) + (repo (github-repository url))) + (cond + ((string-suffix? (string-append "/tarball/v" version) url) + (string-append prefix "/tarball/v" new-version)) + ((string-suffix? (string-append "/tarball/" version) url) + (string-append prefix "/tarball/" new-version)) + ((string-suffix? (string-append "/archive/v" version ext) url) + (string-append prefix "/archive/v" new-version ext)) + ((string-suffix? (string-append "/archive/" version ext) url) + (string-append prefix "/archive/" new-version ext)) + ((string-suffix? (string-append "/archive/" name "-" version ext) + url) + (string-append prefix "/archive/" name "-" new-version ext)) + ((string-suffix? (string-append "/releases/download/v" version "/" + name "-" version ext) + url) + (string-append prefix "/releases/download/v" new-version "/" name + "-" new-version ext)) + ((string-suffix? (string-append "/releases/download/" version "/" + name "-" version ext) + url) + (string-append prefix "/releases/download/" new-version "/" name + "-" new-version ext)) + ((string-suffix? (string-append "/releases/download/" version "/" + repo "-" version ext) + url) + (string-append prefix "/releases/download/" new-version "/" repo + "-" new-version ext)) + ((string-suffix? (string-append "/releases/download/" repo "-" + version "/" repo "-" version ext) + url) + (string-append "/releases/download/" repo "-" version "/" repo "-" + version ext)) + (#t #f))) ; Some URLs are not recognised. + #f)) + + (let ((source-url (and=> (package-source old-package) origin-uri)) + (fetch-method (and=> (package-source old-package) origin-method))) + (if (eq? fetch-method download:url-fetch) + (match source-url + ((? string?) + (updated-url source-url)) + ((source-url ...) + (find updated-url source-url))) + #f))) + +(define (github-package? package) + "Return true if PACKAGE is a package from GitHub, else false." + (not (eq? #f (updated-github-url package "dummy")))) + +(define (github-repository url) + "Return a string e.g. bedtools2 of the name of the repository, from a string +URL of the form 'https://github.com/arq5x/bedtools2/archive/v2.24.0.tar.gz'" + (match (string-split (uri-path (string->uri url)) #\/) + ((_ owner project . rest) + (string-append project)))) + +(define (github-user-slash-repository url) + "Return a string e.g. arq5x/bedtools2 of the owner and the name of the +repository separated by a forward slash, from a string URL of the form +'https://github.com/arq5x/bedtools2/archive/v2.24.0.tar.gz'" + (match (string-split (uri-path (string->uri url)) #\/) + ((_ owner project . rest) + (string-append owner "/" project)))) + +(define %github-token + ;; Token to be passed to Github.com to avoid the 60-request per hour + ;; limit, or #f. + (make-parameter (getenv "GUIX_GITHUB_TOKEN"))) + +(define (latest-released-version url package-name) + "Return a string of the newest released version name given a string URL like +'https://github.com/arq5x/bedtools2/archive/v2.24.0.tar.gz' and the name of +the package e.g. 'bedtools2'. Return #f if there is no releases" + (let* ((token (%github-token)) + (api-url (string-append + "https://api.github.com/repos/" + (github-user-slash-repository url) + "/releases")) + (json (json-fetch* + (if token + (string-append api-url "?access_token=" token) + api-url)))) + (if (eq? json #f) + (if token + (error "Error downloading release information through the GitHub +API when using a GitHub token") + (error "Error downloading release information through the GitHub +API. This may be fixed by using an access token and setting the environment +variable GUIX_GITHUB_TOKEN, for instance one procured from +https://github.com/settings/tokens")) + (let ((proper-releases + (filter + (lambda (x) + ;; example pre-release: + ;; https://github.com/wwood/OrfM/releases/tag/v0.5.1 + ;; or an all-prerelease set + ;; https://github.com/powertab/powertabeditor/releases + (not (hash-ref x "prerelease"))) + json))) + (match proper-releases + (() ;empty release list + #f) + ((release . rest) ;one or more releases + (let ((tag (hash-ref release "tag_name")) + (name-length (string-length package-name))) + ;; some tags include the name of the package e.g. "fdupes-1.51" + ;; so remove these + (if (and (< name-length (string-length tag)) + (string=? (string-append package-name "-") + (substring tag 0 (+ name-length 1)))) + (substring tag (+ name-length 1)) + ;; some tags start with a "v" e.g. "v0.25.0" + ;; where some are just the version number + (if (eq? (string-ref tag 0) #\v) + (substring tag 1) tag))))))))) + +(define (latest-release guix-package) + "Return an <upstream-source> for the latest release of GUIX-PACKAGE." + (let* ((pkg (specification->package guix-package)) + (source-uri (origin-uri (package-source pkg))) + (name (package-name pkg)) + (newest-version (latest-released-version source-uri name))) + (if newest-version + (upstream-source + (package pkg) + (version newest-version) + (urls (list (updated-github-url pkg newest-version)))) + #f))) ; On GitHub but no proper releases + +(define %github-updater + (upstream-updater + (name 'github) + (description "Updater for GitHub packages") + (pred github-package?) + (latest latest-release))) + + diff --git a/guix/scripts/refresh.scm b/guix/scripts/refresh.scm index bbc3521f11..e541138682 100644 --- a/guix/scripts/refresh.scm +++ b/guix/scripts/refresh.scm @@ -199,7 +199,8 @@ unavailable optional dependencies such as Guile-JSON." %cran-updater %bioconductor-updater ((guix import pypi) => %pypi-updater) - ((guix import gem) => %gem-updater))) + ((guix import gem) => %gem-updater) + ((guix import github) => %github-updater))) (define (lookup-updater name) "Return the updater called NAME." |