193 lines
7.6 KiB
Scheme
193 lines
7.6 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2016 David Craven <david@craven.ch>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix import crate)
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#:use-module (guix base32)
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#:use-module (guix build-system cargo)
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#:use-module ((guix download) #:prefix download:)
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#:use-module (gcrypt hash)
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#:use-module (guix http-client)
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#:use-module (guix import json)
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#:use-module (guix import utils)
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#:use-module ((guix licenses) #:prefix license:)
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#:use-module (guix monads)
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#:use-module (guix packages)
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#:use-module (guix upstream)
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#:use-module (guix utils)
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#:use-module (ice-9 match)
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#:use-module (ice-9 pretty-print) ; recursive
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#:use-module (json)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-2)
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#:use-module (srfi srfi-26)
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#:export (crate->guix-package
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guix-package->crate-name
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%crate-updater))
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(define (crate-fetch crate-name callback)
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"Fetch the metadata for CRATE-NAME from crates.io and call the callback."
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(define (crates->inputs crates)
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(sort (map (cut assoc-ref <> "crate_id") crates) string-ci<?))
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(define (string->license string)
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(map spdx-string->license (string-split string #\/)))
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(define (crate-kind-predicate kind)
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(lambda (dep) (string=? (assoc-ref dep "kind") kind)))
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(and-let* ((crate-json (json-fetch-alist (string-append crate-url crate-name)))
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(crate (assoc-ref crate-json "crate"))
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(name (assoc-ref crate "name"))
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(version (assoc-ref crate "max_version"))
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(homepage (assoc-ref crate "homepage"))
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(repository (assoc-ref crate "repository"))
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(synopsis (assoc-ref crate "description"))
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(description (assoc-ref crate "description"))
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(license (or (and=> (assoc-ref crate "license")
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string->license)
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'())) ;missing license info
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(path (string-append "/" version "/dependencies"))
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(deps-json (json-fetch-alist (string-append crate-url name path)))
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(deps (assoc-ref deps-json "dependencies"))
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(dep-crates (filter (crate-kind-predicate "normal") deps))
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(dev-dep-crates
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(filter (lambda (dep)
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(not ((crate-kind-predicate "normal") dep))) deps))
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(cargo-inputs (crates->inputs dep-crates))
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(cargo-development-inputs (crates->inputs dev-dep-crates))
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(home-page (match homepage
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(() repository)
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(_ homepage))))
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(callback #:name name #:version version
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#:cargo-inputs cargo-inputs
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#:cargo-development-inputs cargo-development-inputs
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#:home-page home-page #:synopsis synopsis
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#:description description #:license license)))
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(define (maybe-cargo-inputs package-names)
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(match (package-names->package-inputs package-names)
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(()
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'())
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((package-inputs ...)
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`((#:cargo-inputs ,package-inputs)))))
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(define (maybe-cargo-development-inputs package-names)
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(match (package-names->package-inputs package-names)
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(()
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'())
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((package-inputs ...)
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`((#:cargo-development-inputs ,package-inputs)))))
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(define (maybe-arguments arguments)
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(match arguments
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(()
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'())
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((args ...)
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`((arguments (,'quasiquote ,args))))))
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(define* (make-crate-sexp #:key name version cargo-inputs cargo-development-inputs
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home-page synopsis description license
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#:allow-other-keys)
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"Return the `package' s-expression for a rust package with the given NAME,
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VERSION, CARGO-INPUTS, CARGO-DEVELOPMENT-INPUTS, HOME-PAGE, SYNOPSIS, DESCRIPTION,
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and LICENSE."
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(let* ((port (http-fetch (crate-uri name version)))
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(guix-name (crate-name->package-name name))
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(cargo-inputs (map crate-name->package-name cargo-inputs))
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(cargo-development-inputs (map crate-name->package-name
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cargo-development-inputs))
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(pkg `(package
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(name ,guix-name)
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(version ,version)
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(source (origin
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(method url-fetch)
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(uri (crate-uri ,name version))
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(file-name (string-append name "-" version ".tar.gz"))
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(sha256
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(base32
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,(bytevector->nix-base32-string (port-sha256 port))))))
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(build-system cargo-build-system)
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,@(maybe-arguments (append (maybe-cargo-inputs cargo-inputs)
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(maybe-cargo-development-inputs
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cargo-development-inputs)))
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(home-page ,(match home-page
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(() "")
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(_ home-page)))
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(synopsis ,synopsis)
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(description ,(beautify-description description))
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(license ,(match license
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(() #f)
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((license) license)
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(_ `(list ,@license)))))))
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(close-port port)
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pkg))
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(define (crate->guix-package crate-name)
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"Fetch the metadata for CRATE-NAME from crates.io, and return the
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`package' s-expression corresponding to that package, or #f on failure."
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(crate-fetch crate-name make-crate-sexp))
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(define (guix-package->crate-name package)
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"Return the crate name of PACKAGE."
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(and-let* ((origin (package-source package))
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(uri (origin-uri origin))
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(crate-url? uri)
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(len (string-length crate-url))
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(path (xsubstring uri len))
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(parts (string-split path #\/)))
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(match parts
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((name _ ...) name))))
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(define (crate-name->package-name name)
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(string-append "rust-" (string-join (string-split name #\_) "-")))
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;;;
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;;; Updater
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;;;
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(define (crate-package? package)
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"Return true if PACKAGE is a Rust crate from crates.io."
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(let ((source-url (and=> (package-source package) origin-uri))
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(fetch-method (and=> (package-source package) origin-method)))
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(and (eq? fetch-method download:url-fetch)
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(match source-url
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((? string?)
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(crate-url? source-url))
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((source-url ...)
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(any crate-url? source-url))))))
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(define (latest-release package)
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"Return an <upstream-source> for the latest release of PACKAGE."
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(let* ((crate-name (guix-package->crate-name package))
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(callback (lambda* (#:key version #:allow-other-keys) version))
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(version (crate-fetch crate-name callback))
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(url (crate-uri crate-name version)))
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(upstream-source
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(package (package-name package))
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(version version)
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(urls (list url)))))
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(define %crate-updater
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(upstream-updater
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(name 'crates)
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(description "Updater for crates.io packages")
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(pred crate-package?)
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(latest latest-release)))
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