148 lines
5.4 KiB
Scheme
148 lines
5.4 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
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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 scripts import hackage)
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#:use-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix packages)
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#:use-module (guix scripts)
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#:use-module (guix import hackage)
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#:use-module (guix scripts import)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-37)
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#:use-module (ice-9 match)
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#:use-module (ice-9 format)
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#:export (guix-import-hackage))
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;;;
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;;; Command-line options.
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;;;
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(define ghc-default-version
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(string-append "ghc-" (package-version (@ (gnu packages haskell) ghc))))
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(define %default-options
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`((include-test-dependencies? . #t)
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(read-from-stdin? . #f)
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(cabal-environment . ,`(("impl" . ,ghc-default-version)))))
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(define (show-help)
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(display (_ "Usage: guix import hackage PACKAGE-NAME
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Import and convert the Hackage package for PACKAGE-NAME. If PACKAGE-NAME
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includes a suffix constituted by a at-sign followed by a numerical version (as
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used with Guix packages), then a definition for the specified version of the
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package will be generated. If no version suffix is pecified, then the
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generated package definition will correspond to the latest available
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version.\n"))
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(display (_ "
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-e ALIST, --cabal-environment=ALIST
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specify environment for Cabal evaluation"))
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(display (_ "
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-h, --help display this help and exit"))
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(display (_ "
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-s, --stdin read from standard input"))
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(display (_ "
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-t, --no-test-dependencies don't include test-only dependencies"))
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(display (_ "
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-V, --version display version information and exit"))
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(newline)
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(show-bug-report-information))
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(define %options
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;; Specification of the command-line options.
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(cons* (option '(#\h "help") #f #f
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(lambda args
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(show-help)
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(exit 0)))
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(option '(#\V "version") #f #f
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(lambda args
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(show-version-and-exit "guix import hackage")))
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(option '(#\t "no-test-dependencies") #f #f
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(lambda (opt name arg result)
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(alist-cons 'include-test-dependencies? #f
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(alist-delete 'include-test-dependencies?
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result))))
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(option '(#\s "stdin") #f #f
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(lambda (opt name arg result)
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(alist-cons 'read-from-stdin? #t
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(alist-delete 'read-from-stdin?
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result))))
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(option '(#\e "cabal-environment") #t #f
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(lambda (opt name arg result)
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(alist-cons 'cabal-environment (read/eval arg)
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(alist-delete 'cabal-environment
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result))))
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%standard-import-options))
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;;;
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;;; Entry point.
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;;;
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(define (guix-import-hackage . args)
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(define (parse-options)
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;; Return the alist of option values.
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(args-fold* args %options
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(lambda (opt name arg result)
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(leave (_ "~A: unrecognized option~%") name))
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(lambda (arg result)
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(alist-cons 'argument arg result))
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%default-options))
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(define (run-importer package-name opts error-fn)
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(let ((sexp (hackage->guix-package
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package-name
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#:include-test-dependencies?
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(assoc-ref opts 'include-test-dependencies?)
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#:port (if (assoc-ref opts 'read-from-stdin?)
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(current-input-port)
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#f)
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#:cabal-environment
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(assoc-ref opts 'cabal-environment))))
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(unless sexp (error-fn))
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sexp))
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(let* ((opts (parse-options))
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(args (filter-map (match-lambda
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(('argument . value)
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value)
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(_ #f))
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(reverse opts))))
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(if (assoc-ref opts 'read-from-stdin?)
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(match args
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(()
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(run-importer "stdin" opts
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(lambda ()
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(leave (_ "failed to import cabal file \
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from standard input~%")))))
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((many ...)
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(leave (_ "too many arguments~%"))))
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(match args
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((package-name)
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(run-importer package-name opts
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(lambda ()
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(leave (_ "failed to download cabal file \
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for package '~a'~%")
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package-name))))
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(()
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(leave (_ "too few arguments~%")))
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((many ...)
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(leave (_ "too many arguments~%")))))))
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