diff options
Diffstat (limited to 'guix/import')
| -rw-r--r-- | guix/import/hackage.scm | 8 | ||||
| -rw-r--r-- | guix/import/stackage.scm | 135 |
2 files changed, 142 insertions, 1 deletions
diff --git a/guix/import/hackage.scm b/guix/import/hackage.scm index 9af78ea888..4d01ed23ea 100644 --- a/guix/import/hackage.scm +++ b/guix/import/hackage.scm @@ -37,7 +37,13 @@ #:use-module (guix packages) #:use-module ((guix utils) #:select (call-with-temporary-output-file)) #:export (hackage->guix-package - %hackage-updater)) + %hackage-updater + + guix-package->hackage-name + hackage-fetch + hackage-source-url + hackage-cabal-url + hackage-package?)) (define ghc-standard-libraries ;; List of libraries distributed with ghc (7.10.2). We include GHC itself as diff --git a/guix/import/stackage.scm b/guix/import/stackage.scm new file mode 100644 index 0000000000..542b718083 --- /dev/null +++ b/guix/import/stackage.scm @@ -0,0 +1,135 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2017 Federico Beffa <beffa@fbengineering.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 stackage) + #:use-module (ice-9 match) + #:use-module (ice-9 regex) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-26) + #:use-module (guix import json) + #:use-module (guix import hackage) + #:use-module (guix memoization) + #:use-module (guix packages) + #:use-module (guix upstream) + #:use-module (guix ui) + #:export (stackage->guix-package + %stackage-updater)) + + +;;; +;;; Stackage info fetcher and access functions +;;; + +(define %stackage-url "http://www.stackage.org") + +(define (lts-info-ghc-version lts-info) + "Retruns the version of the GHC compiler contained in LTS-INFO." + (match lts-info + ((("snapshot" ("ghc" . version) _ _) _) version) + (_ #f))) + +(define (lts-info-packages lts-info) + "Retruns the alist of packages contained in LTS-INFO." + (match lts-info + ((_ ("packages" pkg ...)) pkg) + (_ '()))) + +(define stackage-lts-info-fetch + ;; "Retrieve the information about the LTS Stackage release VERSION." + (memoize + (lambda* (#:optional (version "")) + (let* ((url (if (string=? "" version) + (string-append %stackage-url "/lts") + (string-append %stackage-url "/lts-" version))) + (lts-info (json-fetch url))) + (if lts-info + (reverse lts-info) + (leave (_ "LTS release version not found: ~A~%") version)))))) + +(define (stackage-package-name pkg-info) + (assoc-ref pkg-info "name")) + +(define (stackage-package-version pkg-info) + (assoc-ref pkg-info "version")) + +(define (lts-package-version pkgs-info name) + "Return the version of the package with upstream NAME included in PKGS-INFO." + (let ((pkg (find (lambda (pkg) (string=? (stackage-package-name pkg) name)) + pkgs-info))) + (stackage-package-version pkg))) + + +;;; +;;; Importer entry point +;;; + +(define (hackage-name-version name version) + (and version (string-append name "@" version))) + +(define* (stackage->guix-package package-name ; upstream name + #:key + (include-test-dependencies? #t) + (lts-version "") + (packages-info + (lts-info-packages + (stackage-lts-info-fetch lts-version)))) + "Fetch Cabal file for PACKAGE-NAME from hackage.haskell.org. The retrieved +vesion 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-info package-name)) + (name-version (hackage-name-version package-name version))) + (if name-version + (hackage->guix-package name-version + #:include-test-dependencies? + include-test-dependencies?) + (leave (_ "package not found: ~A~%") package-name)))) + + +;;; +;;; Updater +;;; + +(define latest-lts-release + (let ((pkgs-info (mlambda () (lts-info-packages (stackage-lts-info-fetch))))) + (lambda* (package) + "Return an <upstream-source> for the latest Stackage LTS release of +PACKAGE or #f it the package is not inlucded in the Stackage LTS release." + (let* ((hackage-name (guix-package->hackage-name package)) + (version (lts-package-version (pkgs-info) hackage-name)) + (name-version (hackage-name-version hackage-name version))) + (match (and=> name-version hackage-fetch) + (#f (format (current-error-port) + "warning: failed to parse ~a~%" + (hackage-cabal-url hackage-name)) + #f) + (_ (let ((url (hackage-source-url hackage-name version))) + (upstream-source + (package (package-name package)) + (version version) + (urls (list url)))))))))) + +(define %stackage-updater + (upstream-updater + (name 'stackage) + (description "Updater for Stackage LTS packages") + (pred hackage-package?) + (latest latest-lts-release))) + +;;; stackage.scm ends here |