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Diffstat (limited to 'guix/import/crate.scm')
| -rw-r--r-- | guix/import/crate.scm | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/guix/import/crate.scm b/guix/import/crate.scm new file mode 100644 index 0000000000..233a20e983 --- /dev/null +++ b/guix/import/crate.scm @@ -0,0 +1,165 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2016 David Craven <david@craven.ch> +;;; +;;; 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 crate) + #:use-module (guix base32) + #:use-module (guix build-system cargo) + #:use-module ((guix download) #:prefix download:) + #:use-module (guix hash) + #:use-module (guix http-client) + #:use-module (guix import json) + #:use-module (guix import utils) + #:use-module ((guix licenses) #:prefix license:) + #:use-module (guix monads) + #:use-module (guix packages) + #:use-module (guix upstream) + #:use-module (guix utils) + #:use-module (ice-9 match) + #:use-module (ice-9 pretty-print) ; recursive + #:use-module (json) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-2) + #:use-module (srfi srfi-26) + #:export (crate->guix-package + guix-package->crate-name + %crate-updater)) + +(define (crate-fetch crate-name callback) + "Fetch the metadata for CRATE-NAME from crates.io and call the callback." + + (define (crates->inputs crates) + (sort (map (cut assoc-ref <> "crate_id") crates) string-ci<?)) + + (define (string->license string) + (map spdx-string->license (string-split string #\/))) + + (define (crate-kind-predicate kind) + (lambda (dep) (string=? (assoc-ref dep "kind") kind))) + + (and-let* ((crate-json (json-fetch (string-append crate-url crate-name))) + (crate (assoc-ref crate-json "crate")) + (name (assoc-ref crate "name")) + (version (assoc-ref crate "max_version")) + (homepage (assoc-ref crate "homepage")) + (repository (assoc-ref crate "repository")) + (synopsis (assoc-ref crate "description")) + (description (assoc-ref crate "description")) + (license (string->license (assoc-ref crate "license"))) + (path (string-append "/" version "/dependencies")) + (deps-json (json-fetch (string-append crate-url name path))) + (deps (assoc-ref deps-json "dependencies")) + (input-crates (filter (crate-kind-predicate "normal") deps)) + (native-input-crates + (filter (lambda (dep) + (not ((crate-kind-predicate "normal") dep))) deps)) + (inputs (crates->inputs input-crates)) + (native-inputs (crates->inputs native-input-crates)) + (home-page (match homepage + (() repository) + (_ homepage)))) + (callback #:name name #:version version + #:inputs inputs #:native-inputs native-inputs + #:home-page home-page #:synopsis synopsis + #:description description #:license license))) + +(define* (make-crate-sexp #:key name version inputs native-inputs + home-page synopsis description license + #:allow-other-keys) + "Return the `package' s-expression for a rust package with the given NAME, +VERSION, INPUTS, NATIVE-INPUTS, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE." + (let* ((port (http-fetch (crate-uri name version))) + (guix-name (crate-name->package-name name)) + (inputs (map crate-name->package-name inputs)) + (native-inputs (map crate-name->package-name native-inputs)) + (pkg `(package + (name ,guix-name) + (version ,version) + (source (origin + (method url-fetch) + (uri (crate-uri ,name version)) + (file-name (string-append name "-" version ".tar.gz")) + (sha256 + (base32 + ,(bytevector->nix-base32-string (port-sha256 port)))))) + (build-system cargo-build-system) + ,@(maybe-native-inputs native-inputs "src") + ,@(maybe-inputs inputs "src") + (home-page ,(match home-page + (() "") + (_ home-page))) + (synopsis ,synopsis) + (description ,(beautify-description description)) + (license ,(match license + (() #f) + ((license) license) + (_ `(list ,@license))))))) + (close-port port) + pkg)) + +(define (crate->guix-package crate-name) + "Fetch the metadata for CRATE-NAME from crates.io, and return the +`package' s-expression corresponding to that package, or #f on failure." + (crate-fetch crate-name make-crate-sexp)) + +(define (guix-package->crate-name package) + "Return the crate name of PACKAGE." + (and-let* ((origin (package-source package)) + (uri (origin-uri origin)) + (crate-url? uri) + (len (string-length crate-url)) + (path (xsubstring uri len)) + (parts (string-split path #\/))) + (match parts + ((name _ ...) name)))) + +(define (crate-name->package-name name) + (string-append "rust-" (string-join (string-split name #\_) "-"))) + +;;; +;;; Updater +;;; + +(define (crate-package? package) + "Return true if PACKAGE is a Rust crate from crates.io." + (let ((source-url (and=> (package-source package) origin-uri)) + (fetch-method (and=> (package-source package) origin-method))) + (and (eq? fetch-method download:url-fetch) + (match source-url + ((? string?) + (crate-url? source-url)) + ((source-url ...) + (any crate-url? source-url)))))) + +(define (latest-release package) + "Return an <upstream-source> for the latest release of PACKAGE." + (let* ((crate-name (guix-package->crate-name package)) + (callback (lambda* (#:key version #:allow-other-keys) version)) + (version (crate-fetch crate-name callback)) + (url (crate-uri crate-name version))) + (upstream-source + (package (package-name package)) + (version version) + (urls (list url))))) + +(define %crate-updater + (upstream-updater + (name 'crates) + (description "Updater for crates.io packages") + (pred crate-package?) + (latest latest-release))) + |