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authorFederico Beffa <beffa@fbengineering.ch>2015-03-07 17:23:14 +0100
committerFederico Beffa <beffa@fbengineering.ch>2015-04-08 17:31:11 +0200
commit863af4e121d827d3e72a43e405069bf6d887ccba (patch)
tree174a14554db4cb2253da9980c4f9c8100dbb715b
parentbba229a3ca551a33e0f96e23985fe94d7e31eb1c (diff)
import: Add hackage importer.
* guix/scripts/import.scm (importers): Add hackage. * guix/scripts/import/hackage.scm: New file. * po/guix/POTFILES.in: Add guix/scripts/import.scm. * doc/guix.texi: Add section on 'hackage' importer.
-rw-r--r--doc/guix.texi31
-rw-r--r--guix/scripts/import.scm2
-rw-r--r--guix/scripts/import/hackage.scm106
-rw-r--r--po/guix/POTFILES.in1
4 files changed, 139 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 42f616548d..70604b7603 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -3188,6 +3188,37 @@ bound to the @code{libreoffice} top-level attribute):
@example
guix import nix ~/path/to/nixpkgs libreoffice
@end example
+
+@item hackage
+@cindex hackage
+Import meta-data from Haskell community's central package archive
+@uref{https://hackage.haskell.org/, Hackage}. Information is taken from
+Cabal files and includes all the relevant information, including package
+dependencies.
+
+Specific command-line options are:
+
+@table @code
+@item --no-test-dependencies
+@itemx -t
+Do not include dependencies only required to run the test suite.
+@end table
+
+The command below imports meta-data for the latest version of the
+@code{HTTP} Haskell package without including test dependencies:
+
+@example
+guix import hackage -t HTTP
+@end example
+
+A specific package version may optionally be specified by following the
+package name by a hyphen and a version number as in the following example:
+
+@example
+guix import hackage mtl-2.1.3.1
+@end example
+
+Currently only indentation structured Cabal files are supported.
@end table
The structure of the @command{guix import} code is modular. It would be
diff --git a/guix/scripts/import.scm b/guix/scripts/import.scm
index 7e75c10b3e..06b4c17573 100644
--- a/guix/scripts/import.scm
+++ b/guix/scripts/import.scm
@@ -73,7 +73,7 @@ rather than \\n."
;;; Entry point.
;;;
-(define importers '("gnu" "nix" "pypi" "cpan"))
+(define importers '("gnu" "nix" "pypi" "cpan" "hackage"))
(define (resolve-importer name)
(let ((module (resolve-interface
diff --git a/guix/scripts/import/hackage.scm b/guix/scripts/import/hackage.scm
new file mode 100644
index 0000000000..f7c18cd3bf
--- /dev/null
+++ b/guix/scripts/import/hackage.scm
@@ -0,0 +1,106 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 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 scripts import hackage)
+ #:use-module (guix ui)
+ #:use-module (guix utils)
+ #:use-module (guix import hackage)
+ #:use-module (guix scripts import)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-37)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 format)
+ #:export (guix-import-hackage))
+
+
+;;;
+;;; Command-line options.
+;;;
+
+(define %default-options
+ '((include-test-dependencies? . #t)))
+
+(define (show-help)
+ (display (_ "Usage: guix import hackage PACKAGE-NAME
+Import and convert the Hackage package for PACKAGE-NAME. If PACKAGE-NAME
+includes a suffix constituted by a dash followed by a numerical version (as
+used with Guix packages), then a definition for the specified version of the
+package will be generated. If no version suffix is pecified, then the
+generated package definition will correspond to the latest available
+version.\n"))
+ (display (_ "
+ -h, --help display this help and exit"))
+ (display (_ "
+ -t, --no-test-dependencies don't include test only dependencies"))
+ (display (_ "
+ -V, --version display version information and exit"))
+ (newline)
+ (show-bug-report-information))
+
+(define %options
+ ;; Specification of the command-line options.
+ (cons* (option '(#\h "help") #f #f
+ (lambda args
+ (show-help)
+ (exit 0)))
+ (option '(#\V "version") #f #f
+ (lambda args
+ (show-version-and-exit "guix import hackage")))
+ (option '(#\t "no-test-dependencies") #f #f
+ (lambda (opt name arg result)
+ (alist-cons 'include-test-dependencies? #f
+ (alist-delete 'include-test-dependencies?
+ result))))
+ %standard-import-options))
+
+
+;;;
+;;; Entry point.
+;;;
+
+(define (guix-import-hackage . args)
+ (define (parse-options)
+ ;; Return the alist of option values.
+ (args-fold* args %options
+ (lambda (opt name arg result)
+ (leave (_ "~A: unrecognized option~%") name))
+ (lambda (arg result)
+ (alist-cons 'argument arg result))
+ %default-options))
+
+ (let* ((opts (parse-options))
+ (args (filter-map (match-lambda
+ (('argument . value)
+ value)
+ (_ #f))
+ (reverse opts))))
+ (match args
+ ((package-name)
+ (let ((sexp (hackage->guix-package
+ package-name
+ #:include-test-dependencies?
+ (assoc-ref opts 'include-test-dependencies?))))
+ (unless sexp
+ (leave (_ "failed to download cabal file for package '~a'~%")
+ package-name))
+ sexp))
+ (()
+ (leave (_ "too few arguments~%")))
+ ((many ...)
+ (leave (_ "too many arguments~%"))))))
diff --git a/po/guix/POTFILES.in b/po/guix/POTFILES.in
index 5ac9201295..30ce28b712 100644
--- a/po/guix/POTFILES.in
+++ b/po/guix/POTFILES.in
@@ -8,6 +8,7 @@ guix/scripts/download.scm
guix/scripts/package.scm
guix/scripts/gc.scm
guix/scripts/hash.scm
+guix/scripts/import.scm
guix/scripts/pull.scm
guix/scripts/substitute.scm
guix/scripts/authenticate.scm