ae587c2ef0
This was obtained by setting up this environment:
guix shell -D guix --with-input=guile@3.0.9=guile-next \
--with-commit=guile-next=e2ed33ef0445c867fe56c247054aa67e834861f2
-- make -j5
then adding 'unused-module' to (@@ (guix build compiler) %warnings),
building, and checking all the "unused module" warnings and removing
those that were definitely unused.
340 lines
13 KiB
Scheme
340 lines
13 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com>
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;;; Copyright © 2016 David Craven <david@craven.ch>
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;;; Copyright © 2017, 2019-2021 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2019 Martin Becze <mjbecze@riseup.net>
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;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
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;;; Copyright © 2020-2022 Hartmut Goebel <h.goebel@crazy-compilers.com>
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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 hexpm)
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#:use-module (json)
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#:use-module (guix import utils)
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#:use-module ((guix import json) #:select (json-fetch))
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#:use-module ((guix build utils)
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#:select ((package-name->name+version
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. hyphen-package-name->name+version)
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dump-port))
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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 (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (guix build-system rebar)
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#:export (hexpm->guix-package
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guix-package->hexpm-name
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strings->licenses ;; why used here?
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hexpm-recursive-import
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%hexpm-updater))
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;;;
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;;; Interface to https://hex.pm/api, version 2.
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;;; REST-API end-points:
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;;; https://github.com/hexpm/specifications/blob/master/apiary.apib
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;;; Repository end-points:
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;;; https://github.com/hexpm/specifications/blob/master/endpoints.md
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;;;
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(define %hexpm-api-url
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(make-parameter "https://hex.pm/api"))
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(define (package-url name)
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(string-append (%hexpm-api-url) "/packages/" name))
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;;
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;; Hexpm Package. /packages/${name}
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;; https://github.com/hexpm/specifications/blob/master/apiary.apib#Package
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;;
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;; Each package can have several "releases", each of which has its own set of
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;; requirements, build-tool, etc. - see <hexpm-release> below.
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(define-json-mapping <hexpm-pkgdef> make-hexpm-pkgdef hexpm-pkgdef?
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json->hexpm
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(name hexpm-name) ; string
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(html-url hexpm-html-url "html_url") ; string
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(docs-html-url hexpm-docs-html-url "docs_html_url") ; string | 'null
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(meta hexpm-meta "meta" json->hexpm-meta)
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(versions hexpm-versions "releases" ; list of <hexpm-version>
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(lambda (vector)
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(map json->hexpm-version
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(vector->list vector))))
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;; "latest_version" and "latest_stable_version" are not named in the
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;; specification, butt seen in practice.
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(latest-version hexpm-latest-version "latest_version") ; string
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(latest-stable hexpm-latest-stable "latest_stable_version")) ; string
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;; Hexpm package metadata.
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(define-json-mapping <hexpm-meta> make-hexpm-meta hexpm-meta?
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json->hexpm-meta
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(description hexpm-meta-description) ;string
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(licenses hexpm-meta-licenses "licenses" ;list of strings
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(lambda (vector)
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(or (and vector (vector->list vector))
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#f))))
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;; Hexpm package versions.
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(define-json-mapping <hexpm-version> make-hexpm-version hexpm-version?
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json->hexpm-version
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(number hexpm-version-number "version") ;string
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(url hexpm-version-url)) ;string
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(define (lookup-hexpm name)
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"Look up NAME on hex.pm and return the corresopnding <hexpm> record
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or #f if it was not found."
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(and=> (json-fetch (package-url name))
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json->hexpm))
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;;
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;; Hexpm release. /packages/${name}/releases/${version}
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;; https://github.com/hexpm/specifications/blob/master/apiary.apib#Release
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;;
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(define-json-mapping <hexpm-release> make-hexpm-release hexpm-release?
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json->hexpm-release
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(version hexpm-release-version) ; string
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(url hexpm-release-url) ; string
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(meta hexpm-release-meta "meta" json->hexpm-release-meta)
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;; Specification names the next fields "dependencies", but in practice it is
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;; "requirements".
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(dependencies hexpm-requirements "requirements")) ; list of <hexpm-dependency>
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;; Hexpm release meta.
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;; https://github.com/hexpm/specifications/blob/main/package_metadata.md
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(define-json-mapping <hexpm-release-meta>
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make-hexpm-release-meta hexpm-release-meta?
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json->hexpm-release-meta
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(app hexpm-release-meta-app) ; string
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(elixir hexpm-release-meta-elixir) ; string
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(build-tools hexpm-release-meta-build-tools "build_tools" ; list of strings
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(lambda (vector)
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(or (and vector (vector->list vector))
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(list)))))
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;; Hexpm dependency. Each requirement has information about the required
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;; version, such as "~> 2.1.2" or ">= 2.1.2 and < 2.2.0", see
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;; <https://hexdocs.pm/elixir/Version.html#module-requirements>, and whether
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;; the dependency is optional.
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(define-json-mapping <hexpm-dependency> make-hexpm-dependency
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hexpm-dependency?
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json->hexpm-dependency
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(name hexpm-dependency-name "app") ; string
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(requirement hexpm-dependency-requirement) ; string
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(optional hexpm-dependency-optional)) ; bool
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(define (hexpm-release-dependencies release)
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"Return the list of dependency names of RELEASE, a <hexpm-release>."
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(let ((reqs (or (hexpm-requirements release) '#())))
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(map first reqs))) ;; TODO: also return required version
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(define (lookup-hexpm-release version*)
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"Look up RELEASE on hexpm-version-url and return the corresopnding
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<hexpm-release> record or #f if it was not found."
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(and=> (json-fetch (hexpm-version-url version*))
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json->hexpm-release))
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;;;
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;;; Converting hex.pm packages to Guix packages.
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;;;
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(define (maybe-inputs package-inputs input-type)
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"Given a list of PACKAGE-INPUTS, tries to generate the 'inputs' field of a
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package definition. INPUT-TYPE, a symbol, is used to populate the name of
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the input field."
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(match package-inputs
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(()
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'())
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((package-inputs ...)
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`((,input-type (list ,@package-inputs))))))
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(define (dependencies->package-names names)
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"Given a list of hexpm package NAMES, returns a list of guix package names
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as symbols."
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;; TODO: Base name on language of dependency.
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;; The language used for implementing the dependency is not know without
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;; recursing the dependencies. So for now assume more packages are based on
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;; Erlang and prefix all dependencies with "erlang-" (the default).
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(map string->symbol
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(map hexpm-name->package-name
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(sort names string-ci<?))))
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(define* (make-hexpm-sexp #:key name version tarball-url
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home-page synopsis description license
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language build-system dependencies
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#:allow-other-keys)
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"Return the `package' s-expression for a hexpm package with the given NAME,
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VERSION, TARBALL-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE. The
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created package's name will stem from LANGUAGE. BUILD-SYSTEM defined the
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build-system, and DEPENDENCIES the inputs for the package."
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(call-with-temporary-output-file
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(lambda (temp port)
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(and (url-fetch tarball-url temp)
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(values
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`(package
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(name ,(hexpm-name->package-name name language))
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(version ,version)
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(source (origin
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(method url-fetch)
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(uri (hexpm-uri ,name version))
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(sha256 (base32 ,(guix-hash-url temp)))))
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(build-system ,build-system)
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,@(maybe-inputs (dependencies->package-names dependencies) 'inputs)
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(synopsis ,synopsis)
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(description ,(beautify-description description))
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(home-page ,(match home-page
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(() "")
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(_ home-page)))
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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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(define (strings->licenses strings)
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"Convert the list of STRINGS into a list of license objects."
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(filter-map (lambda (license)
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(and (not (string-null? license))
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(not (any (lambda (elem) (string=? elem license))
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'("AND" "OR" "WITH")))
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(or (spdx-string->license license)
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license)))
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strings))
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(define (hexpm-latest-release package)
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"Return the version string for the latest stable release of PACKAGE."
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;; Use latest-stable if specified (see comment in hexpm-pkgdef above),
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;; otherwise compare the lists of release versions.
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(let ((latest-stable (hexpm-latest-stable package)))
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(if (not (unspecified? latest-stable))
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latest-stable
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(let ((versions (map hexpm-version-number (hexpm-versions package))))
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(fold (lambda (a b)
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(if (version>? a b) a b)) (car versions) versions)))))
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(define* (hexpm->guix-package package-name #:key version #:allow-other-keys)
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"Fetch the metadata for PACKAGE-NAME from hexpms.io, and return the
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`package' s-expression corresponding to that package, or #f on failure.
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When VERSION is specified, attempt to fetch that version; otherwise fetch the
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latest version of PACKAGE-NAME."
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(define package
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(lookup-hexpm package-name))
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(define version-number
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(and package
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(or version
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(hexpm-latest-release package))))
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(define version*
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(and package
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(find (lambda (version)
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(string=? (hexpm-version-number version)
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version-number))
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(hexpm-versions package))))
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(define release
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(and package version*
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(lookup-hexpm-release version*)))
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(define release-meta
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(and package version*
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(hexpm-release-meta release)))
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(define build-system
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(and package version*
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(let ((build-tools (hexpm-release-meta-build-tools release-meta)))
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(cond
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((member "rebar3" build-tools) 'rebar-build-system)
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((member "mix" build-tools) 'mix-build-system)
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((member "make" build-tools) 'gnu-build-system)
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(else #f)))))
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(define language
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(and package version*
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(let ((elixir (hexpm-release-meta-elixir release-meta)))
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(cond
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((and (string? elixir) (not (string-null? elixir))) "elixir")
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(else "erlang")))))
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(and package version*
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(let ((dependencies (hexpm-release-dependencies release))
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(pkg-meta (hexpm-meta package))
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(docs-html-url (hexpm-docs-html-url package)))
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(values
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(make-hexpm-sexp
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#:language language
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#:build-system build-system
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#:name package-name
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#:version version-number
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#:dependencies dependencies
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#:home-page (or (and (not (eq? docs-html-url 'null))
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docs-html-url)
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;; TODO: Homepage?
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(hexpm-html-url package))
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#:synopsis (hexpm-meta-description pkg-meta)
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#:description (hexpm-meta-description pkg-meta)
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#:license (or (and=> (hexpm-meta-licenses pkg-meta)
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strings->licenses))
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#:tarball-url (hexpm-uri package-name version-number))
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dependencies))))
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(define* (hexpm-recursive-import pkg-name #:optional version)
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(recursive-import pkg-name
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#:version version
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#:repo->guix-package hexpm->guix-package
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#:guix-name hexpm-name->package-name))
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(define (guix-package->hexpm-name package)
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"Return the hex.pm name of PACKAGE."
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(define (url->hexpm-name url)
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(hyphen-package-name->name+version
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(basename (file-sans-extension url))))
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(match (and=> (package-source package) origin-uri)
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((? string? url)
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(url->hexpm-name url))
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((lst ...)
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(any url->hexpm-name lst))
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(#f #f)))
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(define* (hexpm-name->package-name name #:optional (language "erlang"))
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(string-append language "-" (string-join (string-split name #\_) "-")))
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;;;
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;;; Updater
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;;;
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(define* (import-release package #:key (version #f))
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"Return an <upstream-source> for the latest release of PACKAGE. Optionally
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include a VERSION string to fetch a specific version."
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(let* ((hexpm-name (guix-package->hexpm-name package))
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(hexpm (lookup-hexpm hexpm-name))
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(version (or version (hexpm-latest-release hexpm)))
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(url (hexpm-uri hexpm-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 %hexpm-updater
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(upstream-updater
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(name 'hexpm)
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(description "Updater for hex.pm packages")
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(pred (url-prefix-predicate hexpm-package-url))
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(import import-release)))
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