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import: Add package->code.
* guix/import/print.scm: New file. * tests/print.scm: New file. * Makefile.am (SCM_TESTS): Add new test file. (MODULES): Add print.scm.
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@ -143,6 +143,7 @@ MODULES = \
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guix/build/make-bootstrap.scm \
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guix/search-paths.scm \
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guix/packages.scm \
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guix/import/print.scm \
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guix/import/utils.scm \
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guix/import/gnu.scm \
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guix/import/snix.scm \
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@ -275,6 +276,7 @@ SCM_TESTS = \
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tests/hash.scm \
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tests/pk-crypto.scm \
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tests/pki.scm \
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tests/print.scm \
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tests/sets.scm \
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tests/modules.scm \
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tests/gnu-maintenance.scm \
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164
guix/import/print.scm
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164
guix/import/print.scm
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@ -0,0 +1,164 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
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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 print)
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#:use-module (guix base32)
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#:use-module (guix utils)
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#:use-module (guix licenses)
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#:use-module (guix packages)
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#:use-module (guix search-paths)
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#:use-module (guix build-system)
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#:use-module (gnu packages)
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#:use-module (srfi srfi-1)
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#:use-module (guix import utils)
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#:use-module (ice-9 control)
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#:use-module (ice-9 match)
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#:export (package->code))
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;; FIXME: the quasiquoted arguments field may contain embedded package
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;; objects, e.g. in #:disallowed-references; they will just be printed with
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;; their usual #<package ...> representation, not as variable names.
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(define (package->code package)
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"Return an S-expression representing the source code that produces PACKAGE
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when evaluated."
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;; The module in which the package PKG is defined
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(define (package-module-name pkg)
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(map string->symbol
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(string-split (string-drop-right
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(location-file (package-location pkg)) 4)
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#\/)))
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;; Return the first candidate variable name that is bound to VAL.
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(define (variable-name val mod)
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(match (let/ec return
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(module-for-each (lambda (sym var)
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(if (eq? val (variable-ref var))
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(return sym)
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#f))
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(resolve-interface mod)))
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((? symbol? sym) sym)
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(_ #f)))
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;; Print either license variable name or the code for a license object
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(define (license->code lic)
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(let ((var (variable-name lic '(guix licenses))))
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(or var
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`(license
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(name ,(license-name lic))
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(uri ,(license-uri lic))
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(comment ,(license-comment lic))))))
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(define (search-path-specification->code spec)
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`(search-path-specification
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(variable ,(search-path-specification-variable spec))
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(files (list ,@(search-path-specification-files spec)))
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(separator ,(search-path-specification-separator spec))
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(file-type (quote ,(search-path-specification-file-type spec)))
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(file-pattern ,(search-path-specification-file-pattern spec))))
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(define (source->code source version)
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(let ((uri (origin-uri source))
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(method (origin-method source))
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(sha256 (origin-sha256 source))
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(file-name (origin-file-name source))
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(patches (origin-patches source)))
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`(origin
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(method ,(procedure-name method))
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(uri (string-append ,@(factorize-uri uri version)))
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(sha256
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(base32
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,(format #f "~a" (bytevector->nix-base32-string sha256))))
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;; FIXME: in order to be able to throw away the directory prefix,
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;; we just assume that the patch files can be found with
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;; "search-patches".
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,@(if (null? patches) '()
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`((patches (search-patches ,@(map basename patches))))))))
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(define (package-lists->code lsts)
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(list 'quasiquote
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(map (match-lambda
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((label pkg . out)
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(let ((mod (package-module-name pkg)))
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(list label
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;; FIXME: using '@ certainly isn't pretty, but it
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;; avoids having to import the individual package
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;; modules.
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(list 'unquote
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(list '@ mod (variable-name pkg mod)))))))
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lsts)))
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(let ((name (package-name package))
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(version (package-version package))
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(source (package-source package))
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(build-system (package-build-system package))
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(arguments (package-arguments package))
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(inputs (package-inputs package))
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(propagated-inputs (package-propagated-inputs package))
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(native-inputs (package-native-inputs package))
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(outputs (package-outputs package))
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(native-search-paths (package-native-search-paths package))
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(search-paths (package-search-paths package))
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(replacement (package-replacement package))
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(synopsis (package-synopsis package))
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(description (package-description package))
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(license (package-license package))
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(home-page (package-home-page package))
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(supported-systems (package-supported-systems package))
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(properties (package-properties package)))
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`(package
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(name ,name)
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(version ,version)
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(source ,(source->code source version))
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,@(match properties
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(() '())
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(_ `((properties ,properties))))
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,@(if replacement
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`((replacement ,replacement))
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'())
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(build-system ,(symbol-append (build-system-name build-system)
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'-build-system))
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,@(match arguments
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(() '())
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(args `((arguments ,(list 'quasiquote args)))))
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,@(match outputs
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(("out") '())
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(outs `((outputs (list ,@outs)))))
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,@(match native-inputs
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(() '())
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(pkgs `((native-inputs ,(package-lists->code pkgs)))))
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,@(match inputs
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(() '())
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(pkgs `((inputs ,(package-lists->code pkgs)))))
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,@(match propagated-inputs
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(() '())
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(pkgs `((propagated-inputs ,(package-lists->code pkgs)))))
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,@(if (lset= string=? supported-systems %supported-systems)
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'()
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`((supported-systems (list ,@supported-systems))))
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,@(match (map search-path-specification->code native-search-paths)
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(() '())
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(paths `((native-search-paths (list ,@paths)))))
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,@(match (map search-path-specification->code search-paths)
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(() '())
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(paths `((search-paths (list ,@paths)))))
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(home-page ,home-page)
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(synopsis ,synopsis)
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(description ,description)
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(license ,(if (list? license)
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`(list ,@(map license->code license))
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(license->code license))))))
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64
tests/print.scm
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64
tests/print.scm
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@ -0,0 +1,64 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
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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 (test-print)
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#:use-module (guix import print)
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#:use-module (guix build-system gnu)
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#:use-module (guix download)
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#:use-module (guix packages)
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#:use-module (guix licenses)
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#:use-module (srfi srfi-64))
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(test-begin "print")
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(define pkg
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(package
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(name "test")
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(version "1.2.3")
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(source (origin
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(method url-fetch)
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(uri (string-append "file:///tmp/test-"
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version ".tar.gz"))
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(sha256
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(base32
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"070pwb7brdcn1mfvplkd56vjc7lbz4iznzkqvfsakvgbv68k71ah"))))
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(build-system gnu-build-system)
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(home-page "http://gnu.org")
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(synopsis "Dummy")
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(description "This is a dummy package.")
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(license gpl3+)))
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(test-equal "simple package"
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(package->code pkg)
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'(package
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(name "test")
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(version "1.2.3")
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(source (origin
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(method url-fetch)
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(uri (string-append "file:///tmp/test-"
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version ".tar.gz"))
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(sha256
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(base32
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"070pwb7brdcn1mfvplkd56vjc7lbz4iznzkqvfsakvgbv68k71ah"))))
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(build-system gnu-build-system)
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(home-page "http://gnu.org")
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(synopsis "Dummy")
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(description "This is a dummy package.")
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(license gpl3+)))
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(test-end "print")
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