;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015, 2017, 2018 Ludovic Courtès ;;; Copyright © 2014 Deck Pickard ;;; Copyright © 2015, 2016 Alex Kost ;;; ;;; 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 . (define-module (guix scripts) #:use-module (guix grafts) #:use-module (guix utils) #:use-module (guix ui) #:use-module (guix store) #:use-module (guix monads) #:use-module (guix packages) #:use-module (guix derivations) #:use-module ((guix profiles) #:select (%profile-directory)) #:use-module (guix build syscalls) #:use-module (srfi srfi-1) #:use-module (srfi srfi-19) #:use-module (srfi srfi-37) #:use-module (ice-9 match) #:export (args-fold* parse-command-line maybe-build build-package build-package-source %distro-age-warning warn-about-old-distro %disk-space-warning warn-about-disk-space)) ;;; Commentary: ;;; ;;; General code for Guix scripts. ;;; ;;; Code: (define (args-fold* options unrecognized-option-proc operand-proc . seeds) "A wrapper on top of `args-fold' that does proper user-facing error reporting." (catch 'misc-error (lambda () (apply args-fold options unrecognized-option-proc operand-proc seeds)) (lambda (key proc msg args . rest) ;; XXX: MSG is not i18n'd. (leave (G_ "invalid argument: ~a~%") (apply format #f msg args))))) (define (environment-build-options) "Return additional build options passed as environment variables." (arguments-from-environment-variable "GUIX_BUILD_OPTIONS")) (define %default-argument-handler ;; The default handler for non-option command-line arguments. (lambda (arg result) (alist-cons 'argument arg result))) (define* (parse-command-line args options seeds #:key (build-options? #t) (argument-handler %default-argument-handler)) "Parse the command-line arguments ARGS according to OPTIONS (a list of SRFI-37 options) and return the result, seeded by SEEDS. When BUILD-OPTIONS? is true, also pass arguments passed via the 'GUIX_BUILD_OPTIONS' environment variable. Command-line options take precedence those passed via 'GUIX_BUILD_OPTIONS'. ARGUMENT-HANDLER is called for non-option arguments, like the 'operand-proc' parameter of 'args-fold'." (define (parse-options-from args seeds) ;; Actual parsing takes place here. (apply args-fold* args options (lambda (opt name arg . rest) (leave (G_ "~A: unrecognized option~%") name)) argument-handler seeds)) (call-with-values (lambda () (if build-options? (parse-options-from (environment-build-options) seeds) (apply values seeds))) (lambda seeds ;; ARGS take precedence over what the environment variable specifies. (parse-options-from args seeds)))) (define* (maybe-build drvs #:key dry-run? use-substitutes?) "Show what will/would be built, and actually build DRVS, unless DRY-RUN? is true." (with-monad %store-monad (>>= (show-what-to-build* drvs #:dry-run? dry-run? #:use-substitutes? use-substitutes?) (lambda (_) (if dry-run? (return #f) (built-derivations drvs)))))) (define* (build-package package #:key dry-run? (use-substitutes? #t) #:allow-other-keys #:rest build-options) "Build PACKAGE using BUILD-OPTIONS acceptable by 'set-build-options'. Show what and how will/would be built." (mlet %store-monad ((grafting? ((lift0 %graft? %store-monad)))) (apply set-build-options* #:use-substitutes? use-substitutes? (strip-keyword-arguments '(#:dry-run?) build-options)) (mlet %store-monad ((derivation (package->derivation package #:graft? (and (not dry-run?) grafting?)))) (mbegin %store-monad (maybe-build (list derivation) #:use-substitutes? use-substitutes? #:dry-run? dry-run?) (return (show-derivation-outputs derivation)))))) (define* (build-package-source package #:key dry-run? (use-substitutes? #t) #:allow-other-keys #:rest build-options) "Build PACKAGE source using BUILD-OPTIONS." (mbegin %store-monad (apply set-build-options* #:use-substitutes? use-substitutes? (strip-keyword-arguments '(#:dry-run?) build-options)) (mlet %store-monad ((derivation (origin->derivation (package-source package)))) (mbegin %store-monad (maybe-build (list derivation) #:use-substitutes? use-substitutes? #:dry-run? dry-run?) (return (show-derivation-outputs derivation)))))) (define %distro-age-warning ;; The age (in seconds) above which we warn that the distro is too old. (make-parameter (match (and=> (getenv "GUIX_DISTRO_AGE_WARNING") string->duration) (#f (* 7 24 3600)) (age (time-second age))))) (define* (warn-about-old-distro #:optional (old (%distro-age-warning)) #:key (suggested-command "guix package -u")) "Emit a warning if Guix is older than OLD seconds." (let-syntax ((false-if-not-found (syntax-rules () ((_ exp) (catch 'system-error (lambda () exp) (lambda args (if (= ENOENT (system-error-errno args)) #f (apply throw args)))))))) (define (seconds->days seconds) (round (/ seconds (* 3600 24)))) (define age (match (false-if-not-found (lstat (string-append %profile-directory "/current-guix"))) (#f #f) (stat (- (time-second (current-time time-utc)) (stat:mtime stat))))) (when (and age (>= age old)) (warning (N_ "Your Guix installation is ~a day old.\n" "Your Guix installation is ~a days old.\n" (seconds->days age)) (seconds->days age))) (when (or (not age) (>= age old)) (warning (G_ "Consider running 'guix pull' followed by '~a' to get up-to-date packages and security updates.\n") suggested-command) (newline (guix-warning-port))))) (define %disk-space-warning ;; The fraction (between 0 and 1) of free disk space below which a warning ;; is emitted. (make-parameter (match (and=> (getenv "GUIX_DISK_SPACE_WARNING") string->number) (#f .05) ;5% (threshold (/ threshold 100.))))) (define* (warn-about-disk-space #:optional profile #:key (threshold (%disk-space-warning))) "Display a hint about 'guix gc' if less than THRESHOLD of /gnu/store is available." (let* ((stats (statfs (%store-prefix))) (block-size (file-system-block-size stats)) (available (* block-size (file-system-blocks-available stats))) (total (* block-size (file-system-block-count stats))) (ratio (/ available total 1.))) (when (< ratio threshold) (warning (G_ "only ~,1f% of free space available on ~a~%") (* ratio 100) (%store-prefix)) (if profile (display-hint (format #f (G_ "Consider deleting old profile generations and collecting garbage, along these lines: @example guix package -p ~s --delete-generations=1m guix gc @end example\n") profile)) (display-hint (G_ "Consider running @command{guix gc} to free space.")))))) ;;; scripts.scm ends here