;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net> ;;; ;;; 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 print) #:use-module (guix base32) #:use-module (guix utils) #:use-module (guix licenses) #:use-module (guix packages) #:use-module (guix search-paths) #:use-module (guix build-system) #:use-module (gnu packages) #:use-module (srfi srfi-1) #:use-module (guix import utils) #:use-module (ice-9 control) #:use-module (ice-9 match) #:export (package->code)) ;; FIXME: the quasiquoted arguments field may contain embedded package ;; objects, e.g. in #:disallowed-references; they will just be printed with ;; their usual #<package ...> representation, not as variable names. (define (package->code package) "Return an S-expression representing the source code that produces PACKAGE when evaluated." ;; The module in which the package PKG is defined (define (package-module-name pkg) (map string->symbol (string-split (string-drop-right (location-file (package-location pkg)) 4) #\/))) ;; Return the first candidate variable name that is bound to VAL. (define (variable-name val mod) (match (let/ec return (module-for-each (lambda (sym var) (if (eq? val (variable-ref var)) (return sym) #f)) (resolve-interface mod))) ((? symbol? sym) sym) (_ #f))) ;; Print either license variable name or the code for a license object (define (license->code lic) (let ((var (variable-name lic '(guix licenses)))) (or var `(license (name ,(license-name lic)) (uri ,(license-uri lic)) (comment ,(license-comment lic)))))) (define (search-path-specification->code spec) `(search-path-specification (variable ,(search-path-specification-variable spec)) (files (list ,@(search-path-specification-files spec))) (separator ,(search-path-specification-separator spec)) (file-type (quote ,(search-path-specification-file-type spec))) (file-pattern ,(search-path-specification-file-pattern spec)))) (define (source->code source version) (let ((uri (origin-uri source)) (method (origin-method source)) (sha256 (origin-sha256 source)) (file-name (origin-file-name source)) (patches (origin-patches source))) `(origin (method ,(procedure-name method)) (uri (string-append ,@(factorize-uri uri version))) (sha256 (base32 ,(format #f "~a" (bytevector->nix-base32-string sha256)))) ;; FIXME: in order to be able to throw away the directory prefix, ;; we just assume that the patch files can be found with ;; "search-patches". ,@(if (null? patches) '() `((patches (search-patches ,@(map basename patches)))))))) (define (package-lists->code lsts) (list 'quasiquote (map (match-lambda ((label pkg . out) (let ((mod (package-module-name pkg))) (cons* label ;; FIXME: using '@ certainly isn't pretty, but it ;; avoids having to import the individual package ;; modules. (list 'unquote (list '@ mod (variable-name pkg mod))) out)))) lsts))) (let ((name (package-name package)) (version (package-version package)) (source (package-source package)) (build-system (package-build-system package)) (arguments (package-arguments package)) (inputs (package-inputs package)) (propagated-inputs (package-propagated-inputs package)) (native-inputs (package-native-inputs package)) (outputs (package-outputs package)) (native-search-paths (package-native-search-paths package)) (search-paths (package-search-paths package)) (replacement (package-replacement package)) (synopsis (package-synopsis package)) (description (package-description package)) (license (package-license package)) (home-page (package-home-page package)) (supported-systems (package-supported-systems package)) (properties (package-properties package))) `(package (name ,name) (version ,version) (source ,(source->code source version)) ,@(match properties (() '()) (_ `((properties ,properties)))) ,@(if replacement `((replacement ,replacement)) '()) (build-system ,(symbol-append (build-system-name build-system) '-build-system)) ,@(match arguments (() '()) (args `((arguments ,(list 'quasiquote args))))) ,@(match outputs (("out") '()) (outs `((outputs (list ,@outs))))) ,@(match native-inputs (() '()) (pkgs `((native-inputs ,(package-lists->code pkgs))))) ,@(match inputs (() '()) (pkgs `((inputs ,(package-lists->code pkgs))))) ,@(match propagated-inputs (() '()) (pkgs `((propagated-inputs ,(package-lists->code pkgs))))) ,@(if (lset= string=? supported-systems %supported-systems) '() `((supported-systems (list ,@supported-systems)))) ,@(match (map search-path-specification->code native-search-paths) (() '()) (paths `((native-search-paths (list ,@paths))))) ,@(match (map search-path-specification->code search-paths) (() '()) (paths `((search-paths (list ,@paths))))) (home-page ,home-page) (synopsis ,synopsis) (description ,description) (license ,(if (list? license) `(list ,@(map license->code license)) (license->code license))))))