190 lines
7.3 KiB
Scheme
190 lines
7.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014, 2015, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2014 Deck Pickard <deck.r.pickard@gmail.com>
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;;; Copyright © 2015, 2016 Alex Kost <alezost@gmail.com>
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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)
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#:use-module (guix grafts)
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#:use-module (guix utils)
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#:use-module (guix ui)
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#:use-module (guix store)
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#:use-module (guix monads)
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#:use-module (guix packages)
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#:use-module (guix derivations)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-19)
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#:use-module (srfi srfi-37)
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#:use-module (ice-9 match)
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#:export (args-fold*
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parse-command-line
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maybe-build
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build-package
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build-package-source
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%distro-age-warning
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warn-about-old-distro))
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;;; Commentary:
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;;;
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;;; General code for Guix scripts.
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;;;
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;;; Code:
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(define (args-fold* options unrecognized-option-proc operand-proc . seeds)
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"A wrapper on top of `args-fold' that does proper user-facing error
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reporting."
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(catch 'misc-error
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(lambda ()
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(apply args-fold options unrecognized-option-proc
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operand-proc seeds))
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(lambda (key proc msg args . rest)
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;; XXX: MSG is not i18n'd.
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(leave (G_ "invalid argument: ~a~%")
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(apply format #f msg args)))))
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(define (environment-build-options)
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"Return additional build options passed as environment variables."
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(arguments-from-environment-variable "GUIX_BUILD_OPTIONS"))
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(define %default-argument-handler
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;; The default handler for non-option command-line arguments.
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(lambda (arg result)
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(alist-cons 'argument arg result)))
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(define* (parse-command-line args options seeds
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#:key
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(build-options? #t)
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(argument-handler %default-argument-handler))
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"Parse the command-line arguments ARGS according to OPTIONS (a list of
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SRFI-37 options) and return the result, seeded by SEEDS. When BUILD-OPTIONS?
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is true, also pass arguments passed via the 'GUIX_BUILD_OPTIONS' environment
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variable. Command-line options take precedence those passed via
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'GUIX_BUILD_OPTIONS'.
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ARGUMENT-HANDLER is called for non-option arguments, like the 'operand-proc'
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parameter of 'args-fold'."
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(define (parse-options-from args seeds)
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;; Actual parsing takes place here.
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(apply args-fold* args options
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(lambda (opt name arg . rest)
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(leave (G_ "~A: unrecognized option~%") name))
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argument-handler
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seeds))
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(call-with-values
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(lambda ()
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(if build-options?
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(parse-options-from (environment-build-options) seeds)
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(apply values seeds)))
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(lambda seeds
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;; ARGS take precedence over what the environment variable specifies.
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(parse-options-from args seeds))))
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(define* (maybe-build drvs
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#:key dry-run? use-substitutes?)
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"Show what will/would be built, and actually build DRVS, unless DRY-RUN? is
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true."
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(with-monad %store-monad
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(>>= (show-what-to-build* drvs
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#:dry-run? dry-run?
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#:use-substitutes? use-substitutes?)
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(lambda (_)
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(if dry-run?
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(return #f)
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(built-derivations drvs))))))
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(define* (build-package package
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#:key dry-run? (use-substitutes? #t)
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#:allow-other-keys
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#:rest build-options)
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"Build PACKAGE using BUILD-OPTIONS acceptable by 'set-build-options'.
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Show what and how will/would be built."
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(mlet %store-monad ((grafting? ((lift0 %graft? %store-monad))))
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(apply set-build-options*
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#:use-substitutes? use-substitutes?
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(strip-keyword-arguments '(#:dry-run?) build-options))
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(mlet %store-monad ((derivation (package->derivation
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package #:graft? (and (not dry-run?)
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grafting?))))
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(mbegin %store-monad
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(maybe-build (list derivation)
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#:use-substitutes? use-substitutes?
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#:dry-run? dry-run?)
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(return (show-derivation-outputs derivation))))))
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(define* (build-package-source package
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#:key dry-run? (use-substitutes? #t)
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#:allow-other-keys
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#:rest build-options)
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"Build PACKAGE source using BUILD-OPTIONS."
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(mbegin %store-monad
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(apply set-build-options*
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#:use-substitutes? use-substitutes?
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(strip-keyword-arguments '(#:dry-run?) build-options))
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(mlet %store-monad ((derivation (origin->derivation
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(package-source package))))
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(mbegin %store-monad
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(maybe-build (list derivation)
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#:use-substitutes? use-substitutes?
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#:dry-run? dry-run?)
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(return (show-derivation-outputs derivation))))))
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(define %distro-age-warning
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;; The age (in seconds) above which we warn that the distro is too old.
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(make-parameter (match (and=> (getenv "GUIX_DISTRO_AGE_WARNING")
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string->duration)
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(#f (* 7 24 3600))
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(age (time-second age)))))
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(define* (warn-about-old-distro #:optional (old (%distro-age-warning))
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#:key (suggested-command
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"guix package -u"))
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"Emit a warning if Guix is older than OLD seconds."
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(let-syntax ((false-if-not-found
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(syntax-rules ()
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((_ exp)
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(catch 'system-error
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(lambda ()
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exp)
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(lambda args
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(if (= ENOENT (system-error-errno args))
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#f
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(apply throw args))))))))
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(define (seconds->days seconds)
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(round (/ seconds (* 3600 24))))
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(define age
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(match (false-if-not-found
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(lstat (string-append (config-directory #:ensure? #f)
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"/current")))
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(#f #f)
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(stat (- (time-second (current-time time-utc))
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(stat:mtime stat)))))
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(when (and age (>= age old))
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(warning (N_ "Your Guix installation is ~a day old.\n"
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"Your Guix installation is ~a days old.\n"
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(seconds->days age))
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(seconds->days age)))
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(when (or (not age) (>= age old))
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(warning (G_ "Consider running 'guix pull' followed by
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'~a' to get up-to-date packages and security updates.\n")
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suggested-command)
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(newline (guix-warning-port)))))
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;;; scripts.scm ends here
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