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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Federico Beffa <beffa@fbengineering.ch>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2020 Martin Becze <mjbecze@riseup.net>
;;; Copyright © 2021 Xinglu Chem <public@yoctocell.xyz>
;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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 stackage)
#:use-module (ice-9 match)
#:use-module (json)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:use-module (guix import json)
#:use-module (guix import hackage)
#:use-module (guix import utils)
#:use-module (guix memoization)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module (guix diagnostics)
#:use-module (guix i18n)
#:export (%stackage-url
stackage->guix-package
stackage-recursive-import
%stackage-updater))
;;;
;;; Stackage info fetcher and access functions
;;;
(define %stackage-url
(make-parameter "https://www.stackage.org"))
;; Latest LTS version compatible with current GHC.
(define %default-lts-version "18.14")
(define-json-mapping <stackage-lts> make-stackage-lts
stackage-lts?
json->stackage-lts
(snapshot stackage-lts-snapshot "snapshot" json->snapshot)
(packages stackage-lts-packages "packages"
(lambda (vector)
(map json->stackage-package (vector->list vector)))))
(define-json-mapping <snapshot> make-snapshot
stackage-snapshot?
json->snapshot
(name snapshot-name)
(ghc-version snapshot-ghc-version)
(compiler snapshot-compiler))
(define-json-mapping <stackage-package> make-stackage-package
stackage-package?
json->stackage-package
(origin stackage-package-origin)
(name stackage-package-name)
(version stackage-package-version)
(synopsis stackage-package-synopsis))
(define stackage-lts-info-fetch
;; "Retrieve the information about the LTS Stackage release VERSION."
(memoize
(lambda* (#:optional (version ""))
(let* ((url (string-append (%stackage-url)
"/lts-" (if (string-null? version)
%default-lts-version
version)))
(lts-info (and=> (json-fetch url) json->stackage-lts)))
(or lts-info
(raise (formatted-message (G_ "LTS release version not found: ~a")
version)))))))
(define (lts-package-version packages name)
"Return the version of the package with upstream NAME included in PACKAGES."
(let ((pkg (find (lambda (pkg) (string=? (stackage-package-name pkg) name))
packages)))
(stackage-package-version pkg)))
;;;
;;; Importer entry point
;;;
(define (hackage-name-version name version)
(and version (string-append name "@" version)))
(define stackage->guix-package
(memoize
(lambda* (package-name ; upstream name
#:key
(include-test-dependencies? #t)
(lts-version %default-lts-version)
(packages
(stackage-lts-packages
(stackage-lts-info-fetch lts-version))))
"Fetch Cabal file for PACKAGE-NAME from hackage.haskell.org. The retrieved
version corresponds to the version of PACKAGE-NAME specified in the LTS-VERSION
release at stackage.org. Return the `package' S-expression corresponding to
that package, or #f on failure. PACKAGES-INFO is the alist with the packages
included in the Stackage LTS release."
(let* ((version (lts-package-version packages package-name))
(name-version (hackage-name-version package-name version)))
(if name-version
(hackage->guix-package name-version
#:include-test-dependencies?
include-test-dependencies?)
(raise (formatted-message (G_ "~a: Stackage package not found")
package-name)))))))
(define (stackage-recursive-import package-name . args)
(recursive-import package-name
#:repo->guix-package (lambda* (name #:key repo version)
(apply stackage->guix-package (cons name args)))
#:guix-name hackage-name->package-name))
;;;
;;; Updater
;;;
(define latest-lts-release
(let ((packages
(mlambda ()
(stackage-lts-packages
(stackage-lts-info-fetch %default-lts-version)))))
(lambda* (pkg)
"Return an <upstream-source> for the latest Stackage LTS release of
PACKAGE or #f if the package is not included in the Stackage LTS release."
(let* ((hackage-name (guix-package->hackage-name pkg))
(version (lts-package-version (packages) hackage-name))
(name-version (hackage-name-version hackage-name version)))
(match (and=> name-version hackage-fetch)
(#f
(warning (G_ "failed to parse ~a~%")
(hackage-cabal-url hackage-name))
#f)
(_ (let ((url (hackage-source-url hackage-name version)))
(upstream-source
(package (package-name pkg))
(version version)
(urls (list url))
(input-changes
(changed-inputs
pkg
(stackage->guix-package hackage-name #:packages (packages))))))))))))
(define (stackage-lts-package? package)
"Return whether PACKAGE is available on the default Stackage LTS release."
(and (hackage-package? package)
(let ((packages (stackage-lts-packages
(stackage-lts-info-fetch %default-lts-version)))
(hackage-name (guix-package->hackage-name package)))
(find (lambda (package)
(string=? (stackage-package-name package) hackage-name))
packages))))
(define %stackage-updater
(upstream-updater
(name 'stackage)
(description "Updater for Stackage LTS packages")
(pred stackage-lts-package?)
(latest latest-lts-release)))
;;; stackage.scm ends here
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