41766807d0
The effect is visible on commands like: guix build -e '(+ 2 "foo")' guix build -e '()' * guix/ui.scm (read/eval): Change handler to properly report syntax errors and use 'display-error' for other errors.
1037 lines
39 KiB
Scheme
1037 lines
39 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
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;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
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;;; Copyright © 2014 Alex Kost <alezost@gmail.com>
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||
;;; Copyright © 2014 Deck Pickard <deck.r.pickard@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
|
||
;;; 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.
|
||
;;;
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||
;;; 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.
|
||
;;;
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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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||
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(define-module (guix ui)
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#:use-module (guix utils)
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#:use-module (guix store)
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#:use-module (guix config)
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||
#:use-module (guix packages)
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||
#:use-module (guix profiles)
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||
#:use-module (guix derivations)
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||
#:use-module (guix build-system)
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||
#:use-module (guix serialization)
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||
#:use-module ((guix build utils) #:select (mkdir-p))
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||
#:use-module ((guix licenses) #:select (license? license-name))
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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-19)
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||
#:use-module (srfi srfi-26)
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||
#:use-module (srfi srfi-31)
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||
#:use-module (srfi srfi-34)
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||
#:use-module (srfi srfi-35)
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||
#:use-module (srfi srfi-37)
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||
#:autoload (ice-9 ftw) (scandir)
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||
#:use-module (ice-9 match)
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||
#:use-module (ice-9 format)
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||
#:use-module (ice-9 regex)
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||
#:autoload (system repl repl) (start-repl)
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||
#:autoload (system repl debug) (make-debug stack->vector)
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||
#:replace (symlink)
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||
#:export (_
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||
N_
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||
P_
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||
report-error
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||
leave
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||
make-user-module
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||
load*
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||
warn-about-load-error
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||
show-version-and-exit
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||
show-bug-report-information
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||
string->number*
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||
size->number
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||
show-what-to-build
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||
show-what-to-build*
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||
show-manifest-transaction
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||
call-with-error-handling
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||
with-error-handling
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||
read/eval
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||
read/eval-package-expression
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||
location->string
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||
switch-symlinks
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||
config-directory
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||
fill-paragraph
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||
string->recutils
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||
package->recutils
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||
package-specification->name+version+output
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||
string->generations
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||
string->duration
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||
args-fold*
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||
parse-command-line
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||
run-guix-command
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||
program-name
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||
guix-warning-port
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||
warning
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||
guix-main))
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||
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||
;;; Commentary:
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||
;;;
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||
;;; User interface facilities for command-line tools.
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||
;;;
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||
;;; Code:
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||
|
||
(define %gettext-domain
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||
;; Text domain for strings used in the tools.
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"guix")
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||
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||
(define %package-text-domain
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;; Text domain for package synopses and descriptions.
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"guix-packages")
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||
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(define _ (cut gettext <> %gettext-domain))
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(define N_ (cut ngettext <> <> <> %gettext-domain))
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(define P_ (cut gettext <> %package-text-domain))
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||
|
||
(define-syntax-rule (define-diagnostic name prefix)
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||
"Create a diagnostic macro (i.e., NAME), which will prepend PREFIX to all
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||
messages."
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||
(define-syntax name
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(lambda (x)
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(define (augmented-format-string fmt)
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(string-append "~:[~*~;guix ~a: ~]~a" (syntax->datum fmt)))
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||
|
||
(syntax-case x ()
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((name (underscore fmt) args (... ...))
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(and (string? (syntax->datum #'fmt))
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(free-identifier=? #'underscore #'_))
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(with-syntax ((fmt* (augmented-format-string #'fmt))
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(prefix (datum->syntax x prefix)))
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#'(format (guix-warning-port) (gettext fmt*)
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||
(program-name) (program-name) prefix
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args (... ...))))
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||
((name (N-underscore singular plural n) args (... ...))
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(and (string? (syntax->datum #'singular))
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(string? (syntax->datum #'plural))
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||
(free-identifier=? #'N-underscore #'N_))
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(with-syntax ((s (augmented-format-string #'singular))
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(p (augmented-format-string #'plural))
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||
(prefix (datum->syntax x prefix)))
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#'(format (guix-warning-port)
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(ngettext s p n %gettext-domain)
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(program-name) (program-name) prefix
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args (... ...))))))))
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||
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(define-diagnostic warning "warning: ") ; emit a warning
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||
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||
(define-diagnostic report-error "error: ")
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||
(define-syntax-rule (leave args ...)
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"Emit an error message and exit."
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||
(begin
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(report-error args ...)
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(exit 1)))
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||
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||
(define (make-user-module modules)
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"Return a new user module with the additional MODULES loaded."
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;; Module in which the machine description file is loaded.
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(let ((module (make-fresh-user-module)))
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(for-each (lambda (iface)
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(module-use! module (resolve-interface iface)))
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modules)
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||
module))
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||
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(define* (load* file user-module
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#:key (on-error 'nothing-special))
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"Load the user provided Scheme source code FILE."
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||
(define (frame-with-source frame)
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;; Walk from FRAME upwards until source location information is found.
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(let loop ((frame frame)
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(previous frame))
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(if (not frame)
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previous
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(if (frame-source frame)
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frame
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(loop (frame-previous frame) frame)))))
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(define (error-string frame args)
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(call-with-output-string
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(lambda (port)
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(apply display-error frame port (cdr args)))))
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(define tag
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(make-prompt-tag "user-code"))
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(catch #t
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(lambda ()
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;; XXX: Force a recompilation to avoid ABI issues.
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(set! %fresh-auto-compile #t)
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(set! %load-should-auto-compile #t)
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(save-module-excursion
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(lambda ()
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(set-current-module user-module)
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;; Hide the "auto-compiling" messages.
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(parameterize ((current-warning-port (%make-void-port "w")))
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(call-with-prompt tag
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(lambda ()
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;; Give 'load' an absolute file name so that it doesn't try to
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;; search for FILE in %LOAD-PATH. Note: use 'load', not
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;; 'primitive-load', so that FILE is compiled, which then allows us
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;; to provide better error reporting with source line numbers.
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(load (canonicalize-path file)))
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(const #f))))))
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(lambda _
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;; XXX: Errors are reported from the pre-unwind handler below, but
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;; calling 'exit' from there has no effect, so we call it here.
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(exit 1))
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(rec (handle-error . args)
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;; Capture the stack up to this procedure call, excluded, and pass
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;; the faulty stack frame to 'report-load-error'.
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(let* ((stack (make-stack #t handle-error tag))
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(depth (stack-length stack))
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(last (and (> depth 0) (stack-ref stack 0)))
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(frame (frame-with-source
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(if (> depth 1)
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(stack-ref stack 1) ;skip the 'throw' frame
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last))))
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(report-load-error file args frame)
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(case on-error
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((debug)
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(newline)
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(display (_ "entering debugger; type ',bt' for a backtrace\n"))
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(start-repl #:debug (make-debug (stack->vector stack) 0
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(error-string frame args)
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#f)))
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((backtrace)
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(newline (current-error-port))
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(display-backtrace stack (current-error-port)))
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(else
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#t))))))
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(define* (report-load-error file args #:optional frame)
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"Report the failure to load FILE, a user-provided Scheme file.
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ARGS is the list of arguments received by the 'throw' handler."
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(match args
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(('system-error . _)
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(let ((err (system-error-errno args)))
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(report-error (_ "failed to load '~a': ~a~%") file (strerror err))))
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(('syntax-error proc message properties form . rest)
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(let ((loc (source-properties->location properties)))
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(format (current-error-port) (_ "~a: error: ~a~%")
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(location->string loc) message)))
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((error args ...)
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(report-error (_ "failed to load '~a':~%") file)
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(apply display-error frame (current-error-port) args))))
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(define (warn-about-load-error file args) ;FIXME: factorize with ↑
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"Report the failure to load FILE, a user-provided Scheme file, without
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exiting. ARGS is the list of arguments received by the 'throw' handler."
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(match args
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(('system-error . _)
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(let ((err (system-error-errno args)))
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(warning (_ "failed to load '~a': ~a~%") file (strerror err))))
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(('syntax-error proc message properties form . rest)
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(let ((loc (source-properties->location properties)))
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(format (current-error-port) (_ "~a: warning: ~a~%")
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(location->string loc) message)))
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((error args ...)
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(warning (_ "failed to load '~a':~%") file)
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(apply display-error #f (current-error-port) args))))
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||
(define (install-locale)
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"Install the current locale settings."
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(catch 'system-error
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(lambda _
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(setlocale LC_ALL ""))
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(lambda args
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(warning (_ "failed to install locale: ~a~%")
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(strerror (system-error-errno args))))))
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||
(define (initialize-guix)
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"Perform the usual initialization for stand-alone Guix commands."
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(install-locale)
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(textdomain %gettext-domain)
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;; Ignore SIGPIPE. If the daemon closes the connection, we prefer to be
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;; notified via an EPIPE later.
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(sigaction SIGPIPE SIG_IGN)
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(setvbuf (current-output-port) _IOLBF)
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(setvbuf (current-error-port) _IOLBF))
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(define* (show-version-and-exit #:optional (command (car (command-line))))
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"Display version information for COMMAND and `(exit 0)'."
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(simple-format #t "~a (~a) ~a~%"
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command %guix-package-name %guix-version)
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(display (_ "Copyright (C) 2015 the Guix authors
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law.
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"))
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(exit 0))
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(define (show-bug-report-information)
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(format #t (_ "
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Report bugs to: ~a.") %guix-bug-report-address)
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(format #t (_ "
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~a home page: <~a>") %guix-package-name %guix-home-page-url)
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(display (_ "
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General help using GNU software: <http://www.gnu.org/gethelp/>"))
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(newline))
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(define symlink
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(let ((real-symlink (@ (guile) symlink)))
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(lambda (target link)
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"This is a 'symlink' replacement that provides proper error reporting."
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(catch 'system-error
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(lambda ()
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(real-symlink target link))
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(lambda (key proc fmt args errno)
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;; Augment the FMT and ARGS with information about LINK (this
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;; information is missing as of Guile 2.0.11, making the exception
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;; uninformative.)
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(apply throw key proc "~A: ~S"
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(list (strerror (car errno)) link)
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(list errno)))))))
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(set! copy-file
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;; Note: here we use 'set!', not #:replace, because UIs typically use
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;; 'copy-recursively', which doesn't use (guix ui).
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(let ((real-copy-file (@ (guile) copy-file)))
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(lambda (source target)
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"This is a 'copy-file' replacement that provides proper error reporting."
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(catch 'system-error
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(lambda ()
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(real-copy-file source target))
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(lambda (key proc fmt args errno)
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;; Augment the FMT and ARGS with information about TARGET (this
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;; information is missing as of Guile 2.0.11, making the exception
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;; uninformative.)
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(apply throw key proc "~A: ~S"
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(list (strerror (car errno)) target)
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(list errno)))))))
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(define (string->number* str)
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"Like `string->number', but error out with an error message on failure."
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(or (string->number str)
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(leave (_ "~a: invalid number~%") str)))
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(define (size->number str)
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"Convert STR, a storage measurement representation such as \"1024\" or
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\"1MiB\", to a number of bytes. Raise an error if STR could not be
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interpreted."
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(define unit-pos
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(string-rindex str char-set:digit))
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(define unit
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(and unit-pos (substring str (+ 1 unit-pos))))
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(let* ((numstr (if unit-pos
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(substring str 0 (+ 1 unit-pos))
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str))
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(num (string->number numstr)))
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(unless num
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(leave (_ "invalid number: ~a~%") numstr))
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((compose inexact->exact round)
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(* num
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(match unit
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((or "KiB" "K" "k") (expt 2 10))
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((or "MiB" "M") (expt 2 20))
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((or "GiB" "G") (expt 2 30))
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||
((or "TiB" "T") (expt 2 40))
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((or "PiB" "P") (expt 2 50))
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((or "EiB" "E") (expt 2 60))
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((or "ZiB" "Z") (expt 2 70))
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((or "YiB" "Y") (expt 2 80))
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("kB" (expt 10 3))
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("MB" (expt 10 6))
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("GB" (expt 10 9))
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("TB" (expt 10 12))
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("PB" (expt 10 15))
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("EB" (expt 10 18))
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("ZB" (expt 10 21))
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("YB" (expt 10 24))
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("" 1)
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(_
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(leave (_ "unknown unit: ~a~%") unit)))))))
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||
|
||
(define (call-with-error-handling thunk)
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||
"Call THUNK within a user-friendly error handler."
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||
(guard (c ((package-input-error? c)
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||
(let* ((package (package-error-package c))
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||
(input (package-error-invalid-input c))
|
||
(location (package-location package))
|
||
(file (location-file location))
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||
(line (location-line location))
|
||
(column (location-column location)))
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||
(leave (_ "~a:~a:~a: package `~a' has an invalid input: ~s~%")
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||
file line column
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||
(package-full-name package) input)))
|
||
((package-cross-build-system-error? c)
|
||
(let* ((package (package-error-package c))
|
||
(loc (package-location package))
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||
(system (package-build-system package)))
|
||
(leave (_ "~a: ~a: build system `~a' does not support cross builds~%")
|
||
(location->string loc)
|
||
(package-full-name package)
|
||
(build-system-name system))))
|
||
((profile-not-found-error? c)
|
||
(leave (_ "profile '~a' does not exist~%")
|
||
(profile-error-profile c)))
|
||
((missing-generation-error? c)
|
||
(leave (_ "generation ~a of profile '~a' does not exist~%")
|
||
(missing-generation-error-generation c)
|
||
(profile-error-profile c)))
|
||
((nar-error? c)
|
||
(let ((file (nar-error-file c))
|
||
(port (nar-error-port c)))
|
||
(if file
|
||
(leave (_ "corrupt input while restoring '~a' from ~s~%")
|
||
file (or (port-filename port) port))
|
||
(leave (_ "corrupt input while restoring archive from ~s~%")
|
||
(or (port-filename port) port)))))
|
||
((nix-connection-error? c)
|
||
(leave (_ "failed to connect to `~a': ~a~%")
|
||
(nix-connection-error-file c)
|
||
(strerror (nix-connection-error-code c))))
|
||
((nix-protocol-error? c)
|
||
;; FIXME: Server-provided error messages aren't i18n'd.
|
||
(leave (_ "build failed: ~a~%")
|
||
(nix-protocol-error-message c)))
|
||
((derivation-missing-output-error? c)
|
||
(leave (_ "reference to invalid output '~a' of derivation '~a'~%")
|
||
(derivation-missing-output c)
|
||
(derivation-file-name (derivation-error-derivation c))))
|
||
((message-condition? c)
|
||
;; Normally '&message' error conditions have an i18n'd message.
|
||
(leave (_ "~a~%")
|
||
(gettext (condition-message c) %gettext-domain))))
|
||
;; Catch EPIPE and the likes.
|
||
(catch 'system-error
|
||
thunk
|
||
(lambda (key proc format-string format-args . rest)
|
||
(leave (_ "~a: ~a~%") proc
|
||
(apply format #f format-string format-args))))))
|
||
|
||
(define %guix-user-module
|
||
;; Module in which user expressions are evaluated.
|
||
;; Compute lazily to avoid circularity with (guix gexp).
|
||
(delay
|
||
(let ((module (make-module)))
|
||
(beautify-user-module! module)
|
||
;; Use (guix gexp) so that one can use #~ & co.
|
||
(module-use! module (resolve-interface '(guix gexp)))
|
||
module)))
|
||
|
||
(define (read/eval str)
|
||
"Read and evaluate STR, raising an error if something goes wrong."
|
||
(let ((exp (catch #t
|
||
(lambda ()
|
||
(call-with-input-string str read))
|
||
(lambda args
|
||
(leave (_ "failed to read expression ~s: ~s~%")
|
||
str args)))))
|
||
(catch #t
|
||
(lambda ()
|
||
(eval exp (force %guix-user-module)))
|
||
(lambda args
|
||
(report-error (_ "failed to evaluate expression '~a':~%") exp)
|
||
(match args
|
||
(('syntax-error proc message properties form . rest)
|
||
(report-error (_ "syntax error: ~a~%") message))
|
||
((error args ...)
|
||
(apply display-error #f (current-error-port) args))
|
||
(what? #f))
|
||
(exit 1)))))
|
||
|
||
(define (read/eval-package-expression str)
|
||
"Read and evaluate STR and return the package it refers to, or exit an
|
||
error."
|
||
(match (read/eval str)
|
||
((? package? p) p)
|
||
(_
|
||
(leave (_ "expression ~s does not evaluate to a package~%")
|
||
str))))
|
||
|
||
(define* (show-what-to-build store drv
|
||
#:key dry-run? (use-substitutes? #t))
|
||
"Show what will or would (depending on DRY-RUN?) be built in realizing the
|
||
derivations listed in DRV. Return #t if there's something to build, #f
|
||
otherwise. When USE-SUBSTITUTES?, check and report what is prerequisites are
|
||
available for download."
|
||
(define substitutable?
|
||
;; Call 'substitutation-oracle' upfront so we don't end up launching the
|
||
;; substituter many times. This makes a big difference, especially when
|
||
;; DRV is a long list as is the case with 'guix environment'.
|
||
(if use-substitutes?
|
||
(substitution-oracle store drv)
|
||
(const #f)))
|
||
|
||
(define (built-or-substitutable? drv)
|
||
(or (null? (derivation-outputs drv))
|
||
(let ((out (derivation->output-path drv))) ;XXX: assume "out" exists
|
||
(or (valid-path? store out)
|
||
(substitutable? out)))))
|
||
|
||
(let*-values (((build download)
|
||
(fold2 (lambda (drv build download)
|
||
(let-values (((b d)
|
||
(derivation-prerequisites-to-build
|
||
store drv
|
||
#:substitutable? substitutable?)))
|
||
(values (append b build)
|
||
(append d download))))
|
||
'() '()
|
||
drv))
|
||
((build) ; add the DRV themselves
|
||
(delete-duplicates
|
||
(append (map derivation-file-name
|
||
(remove built-or-substitutable? drv))
|
||
(map derivation-input-path build))))
|
||
((download) ; add the references of DOWNLOAD
|
||
(if use-substitutes?
|
||
(delete-duplicates
|
||
(append download
|
||
(remove (cut valid-path? store <>)
|
||
(append-map
|
||
substitutable-references
|
||
(substitutable-path-info store
|
||
download)))))
|
||
download)))
|
||
;; TODO: Show the installed size of DOWNLOAD.
|
||
(if dry-run?
|
||
(begin
|
||
(format (current-error-port)
|
||
(N_ "~:[The following derivation would be built:~%~{ ~a~%~}~;~]"
|
||
"~:[The following derivations would be built:~%~{ ~a~%~}~;~]"
|
||
(length build))
|
||
(null? build) build)
|
||
(format (current-error-port)
|
||
(N_ "~:[The following file would be downloaded:~%~{ ~a~%~}~;~]"
|
||
"~:[The following files would be downloaded:~%~{ ~a~%~}~;~]"
|
||
(length download))
|
||
(null? download) download))
|
||
(begin
|
||
(format (current-error-port)
|
||
(N_ "~:[The following derivation will be built:~%~{ ~a~%~}~;~]"
|
||
"~:[The following derivations will be built:~%~{ ~a~%~}~;~]"
|
||
(length build))
|
||
(null? build) build)
|
||
(format (current-error-port)
|
||
(N_ "~:[The following file will be downloaded:~%~{ ~a~%~}~;~]"
|
||
"~:[The following files will be downloaded:~%~{ ~a~%~}~;~]"
|
||
(length download))
|
||
(null? download) download)))
|
||
(pair? build)))
|
||
|
||
(define show-what-to-build*
|
||
(store-lift show-what-to-build))
|
||
|
||
(define (right-arrow port)
|
||
"Return either a string containing the 'RIGHT ARROW' character, or an ASCII
|
||
replacement if PORT is not Unicode-capable."
|
||
(with-fluids ((%default-port-encoding (port-encoding port)))
|
||
(let ((arrow "→"))
|
||
(catch 'encoding-error
|
||
(lambda ()
|
||
(call-with-output-string
|
||
(lambda (port)
|
||
(set-port-conversion-strategy! port 'error)
|
||
(display arrow port))))
|
||
(lambda (key . args)
|
||
"->")))))
|
||
|
||
(define* (show-manifest-transaction store manifest transaction
|
||
#:key dry-run?)
|
||
"Display what will/would be installed/removed from MANIFEST by TRANSACTION."
|
||
(define (package-strings name version output item)
|
||
(map (lambda (name version output item)
|
||
(format #f " ~a~:[:~a~;~*~]\t~a\t~a"
|
||
name
|
||
(equal? output "out") output version
|
||
(if (package? item)
|
||
(package-output store item output)
|
||
item)))
|
||
name version output item))
|
||
|
||
(define → ;an arrow that can be represented on stderr
|
||
(right-arrow (current-error-port)))
|
||
|
||
(define (upgrade-string name old-version new-version output item)
|
||
(format #f " ~a~:[:~a~;~*~]\t~a ~a ~a\t~a"
|
||
name (equal? output "out") output
|
||
old-version → new-version
|
||
(if (package? item)
|
||
(package-output store item output)
|
||
item)))
|
||
|
||
(let-values (((remove install upgrade downgrade)
|
||
(manifest-transaction-effects manifest transaction)))
|
||
(match remove
|
||
((($ <manifest-entry> name version output item) ..1)
|
||
(let ((len (length name))
|
||
(remove (package-strings name version output item)))
|
||
(if dry-run?
|
||
(format (current-error-port)
|
||
(N_ "The following package would be removed:~%~{~a~%~}~%"
|
||
"The following packages would be removed:~%~{~a~%~}~%"
|
||
len)
|
||
remove)
|
||
(format (current-error-port)
|
||
(N_ "The following package will be removed:~%~{~a~%~}~%"
|
||
"The following packages will be removed:~%~{~a~%~}~%"
|
||
len)
|
||
remove))))
|
||
(_ #f))
|
||
(match downgrade
|
||
(((($ <manifest-entry> name old-version)
|
||
. ($ <manifest-entry> _ new-version output item)) ..1)
|
||
(let ((len (length name))
|
||
(downgrade (map upgrade-string
|
||
name old-version new-version output item)))
|
||
(if dry-run?
|
||
(format (current-error-port)
|
||
(N_ "The following package would be downgraded:~%~{~a~%~}~%"
|
||
"The following packages would be downgraded:~%~{~a~%~}~%"
|
||
len)
|
||
downgrade)
|
||
(format (current-error-port)
|
||
(N_ "The following package will be downgraded:~%~{~a~%~}~%"
|
||
"The following packages will be downgraded:~%~{~a~%~}~%"
|
||
len)
|
||
downgrade))))
|
||
(_ #f))
|
||
(match upgrade
|
||
(((($ <manifest-entry> name old-version)
|
||
. ($ <manifest-entry> _ new-version output item)) ..1)
|
||
(let ((len (length name))
|
||
(upgrade (map upgrade-string
|
||
name old-version new-version output item)))
|
||
(if dry-run?
|
||
(format (current-error-port)
|
||
(N_ "The following package would be upgraded:~%~{~a~%~}~%"
|
||
"The following packages would be upgraded:~%~{~a~%~}~%"
|
||
len)
|
||
upgrade)
|
||
(format (current-error-port)
|
||
(N_ "The following package will be upgraded:~%~{~a~%~}~%"
|
||
"The following packages will be upgraded:~%~{~a~%~}~%"
|
||
len)
|
||
upgrade))))
|
||
(_ #f))
|
||
(match install
|
||
((($ <manifest-entry> name version output item _) ..1)
|
||
(let ((len (length name))
|
||
(install (package-strings name version output item)))
|
||
(if dry-run?
|
||
(format (current-error-port)
|
||
(N_ "The following package would be installed:~%~{~a~%~}~%"
|
||
"The following packages would be installed:~%~{~a~%~}~%"
|
||
len)
|
||
install)
|
||
(format (current-error-port)
|
||
(N_ "The following package will be installed:~%~{~a~%~}~%"
|
||
"The following packages will be installed:~%~{~a~%~}~%"
|
||
len)
|
||
install))))
|
||
(_ #f))))
|
||
|
||
(define-syntax with-error-handling
|
||
(syntax-rules ()
|
||
"Run BODY within a user-friendly error condition handler."
|
||
((_ body ...)
|
||
(call-with-error-handling
|
||
(lambda ()
|
||
body ...)))))
|
||
|
||
(define (location->string loc)
|
||
"Return a human-friendly, GNU-standard representation of LOC."
|
||
(match loc
|
||
(#f (_ "<unknown location>"))
|
||
(($ <location> file line column)
|
||
(format #f "~a:~a:~a" file line column))))
|
||
|
||
(define (switch-symlinks link target)
|
||
"Atomically switch LINK, a symbolic link, to point to TARGET. Works
|
||
both when LINK already exists and when it does not."
|
||
(let ((pivot (string-append link ".new")))
|
||
(symlink target pivot)
|
||
(rename-file pivot link)))
|
||
|
||
(define (config-directory)
|
||
"Return the name of the configuration directory, after making sure that it
|
||
exists. Honor the XDG specs,
|
||
<http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html>."
|
||
(let ((dir (and=> (or (getenv "XDG_CONFIG_HOME")
|
||
(and=> (getenv "HOME")
|
||
(cut string-append <> "/.config")))
|
||
(cut string-append <> "/guix"))))
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(mkdir-p dir)
|
||
dir)
|
||
(lambda args
|
||
(let ((err (system-error-errno args)))
|
||
;; ERR is necessarily different from EEXIST.
|
||
(leave (_ "failed to create configuration directory `~a': ~a~%")
|
||
dir (strerror err)))))))
|
||
|
||
(define* (fill-paragraph str width #:optional (column 0))
|
||
"Fill STR such that each line contains at most WIDTH characters, assuming
|
||
that the first character is at COLUMN.
|
||
|
||
When STR contains a single line break surrounded by other characters, it is
|
||
converted to a space; sequences of more than one line break are preserved."
|
||
(define (maybe-break chr result)
|
||
(match result
|
||
((column newlines chars)
|
||
(case chr
|
||
((#\newline)
|
||
`(,column ,(+ 1 newlines) ,chars))
|
||
(else
|
||
(let* ((spaces (if (and (pair? chars) (eqv? (car chars) #\.)) 2 1))
|
||
(chars (case newlines
|
||
((0) chars)
|
||
((1)
|
||
(append (make-list spaces #\space) chars))
|
||
(else
|
||
(append (make-list newlines #\newline) chars))))
|
||
(column (case newlines
|
||
((0) column)
|
||
((1) (+ spaces column))
|
||
(else 0))))
|
||
(let ((chars (cons chr chars))
|
||
(column (+ 1 column)))
|
||
(if (> column width)
|
||
(let*-values (((before after)
|
||
(break (cut eqv? #\space <>) chars))
|
||
((len)
|
||
(length before)))
|
||
(if (<= len width)
|
||
`(,len
|
||
0
|
||
,(if (null? after)
|
||
before
|
||
(append before
|
||
(cons #\newline
|
||
(drop-while (cut eqv? #\space <>)
|
||
after)))))
|
||
`(,column 0 ,chars))) ; unbreakable
|
||
`(,column 0 ,chars)))))))))
|
||
|
||
(match (string-fold maybe-break
|
||
`(,column 0 ())
|
||
str)
|
||
((_ _ chars)
|
||
(list->string (reverse chars)))))
|
||
|
||
|
||
;;;
|
||
;;; Packages.
|
||
;;;
|
||
|
||
(define (string->recutils str)
|
||
"Return a version of STR where newlines have been replaced by newlines
|
||
followed by \"+ \", which makes for a valid multi-line field value in the
|
||
`recutils' syntax."
|
||
(list->string
|
||
(string-fold-right (lambda (chr result)
|
||
(if (eqv? chr #\newline)
|
||
(cons* chr #\+ #\space result)
|
||
(cons chr result)))
|
||
'()
|
||
str)))
|
||
|
||
(define* (package->recutils p port
|
||
#:optional (width (or (and=> (getenv "WIDTH")
|
||
string->number)
|
||
80)))
|
||
"Write to PORT a `recutils' record of package P, arranging to fit within
|
||
WIDTH columns."
|
||
(define (description->recutils str)
|
||
(let ((str (P_ str)))
|
||
(string->recutils
|
||
(fill-paragraph str width
|
||
(string-length "description: ")))))
|
||
|
||
(define (dependencies->recutils packages)
|
||
(let ((list (string-join (map package-full-name
|
||
(sort packages package<?)) " ")))
|
||
(string->recutils
|
||
(fill-paragraph list width
|
||
(string-length "dependencies: ")))))
|
||
|
||
(define (package<? p1 p2)
|
||
(string<? (package-full-name p1) (package-full-name p2)))
|
||
|
||
;; Note: Don't i18n field names so that people can post-process it.
|
||
(format port "name: ~a~%" (package-name p))
|
||
(format port "version: ~a~%" (package-version p))
|
||
(format port "systems: ~a~%"
|
||
(string-join (package-transitive-supported-systems p)))
|
||
(format port "dependencies: ~a~%"
|
||
(match (package-direct-inputs p)
|
||
(((labels inputs . _) ...)
|
||
(dependencies->recutils (filter package? inputs)))))
|
||
(format port "location: ~a~%"
|
||
(or (and=> (package-location p) location->string)
|
||
(_ "unknown")))
|
||
|
||
;; Note: Starting from version 1.6 or recutils, hyphens are not allowed in
|
||
;; field identifiers.
|
||
(format port "homepage: ~a~%" (package-home-page p))
|
||
|
||
(format port "license: ~a~%"
|
||
(match (package-license p)
|
||
(((? license? licenses) ...)
|
||
(string-join (map license-name licenses)
|
||
", "))
|
||
((? license? license)
|
||
(license-name license))
|
||
(x
|
||
(_ "unknown"))))
|
||
(format port "synopsis: ~a~%"
|
||
(string-map (match-lambda
|
||
(#\newline #\space)
|
||
(chr chr))
|
||
(or (and=> (package-synopsis p) P_)
|
||
"")))
|
||
(format port "description: ~a~%"
|
||
(and=> (package-description p) description->recutils))
|
||
(newline port))
|
||
|
||
(define (string->generations str)
|
||
"Return the list of generations matching a pattern in STR. This function
|
||
accepts the following patterns: \"1\", \"1,2,3\", \"1..9\", \"1..\", \"..9\"."
|
||
(define (maybe-integer)
|
||
(let ((x (string->number str)))
|
||
(and (integer? x)
|
||
x)))
|
||
|
||
(define (maybe-comma-separated-integers)
|
||
(let ((lst (delete-duplicates
|
||
(map string->number
|
||
(string-split str #\,)))))
|
||
(and (every integer? lst)
|
||
lst)))
|
||
|
||
(cond ((maybe-integer)
|
||
=>
|
||
list)
|
||
((maybe-comma-separated-integers)
|
||
=>
|
||
identity)
|
||
((string-match "^([0-9]+)\\.\\.([0-9]+)$" str)
|
||
=>
|
||
(lambda (match)
|
||
(let ((s (string->number (match:substring match 1)))
|
||
(e (string->number (match:substring match 2))))
|
||
(and (every integer? (list s e))
|
||
(<= s e)
|
||
(iota (1+ (- e s)) s)))))
|
||
((string-match "^([0-9]+)\\.\\.$" str)
|
||
=>
|
||
(lambda (match)
|
||
(let ((s (string->number (match:substring match 1))))
|
||
(and (integer? s)
|
||
`(>= ,s)))))
|
||
((string-match "^\\.\\.([0-9]+)$" str)
|
||
=>
|
||
(lambda (match)
|
||
(let ((e (string->number (match:substring match 1))))
|
||
(and (integer? e)
|
||
`(<= ,e)))))
|
||
(else #f)))
|
||
|
||
(define (string->duration str)
|
||
"Return the duration matching a pattern in STR. This function accepts the
|
||
following patterns: \"1d\", \"1w\", \"1m\"."
|
||
(define (hours->duration hours match)
|
||
(make-time time-duration 0
|
||
(* 3600 hours (string->number (match:substring match 1)))))
|
||
|
||
(cond ((string-match "^([0-9]+)d$" str)
|
||
=>
|
||
(lambda (match)
|
||
(hours->duration 24 match)))
|
||
((string-match "^([0-9]+)w$" str)
|
||
=>
|
||
(lambda (match)
|
||
(hours->duration (* 24 7) match)))
|
||
((string-match "^([0-9]+)m$" str)
|
||
=>
|
||
(lambda (match)
|
||
(hours->duration (* 24 30) match)))
|
||
(else #f)))
|
||
|
||
(define* (package-specification->name+version+output spec
|
||
#:optional (output "out"))
|
||
"Parse package specification SPEC and return three value: the specified
|
||
package name, version number (or #f), and output name (or OUTPUT). SPEC may
|
||
optionally contain a version number and an output name, as in these examples:
|
||
|
||
guile
|
||
guile-2.0.9
|
||
guile:debug
|
||
guile-2.0.9:debug
|
||
"
|
||
(let*-values (((name sub-drv)
|
||
(match (string-rindex spec #\:)
|
||
(#f (values spec output))
|
||
(colon (values (substring spec 0 colon)
|
||
(substring spec (+ 1 colon))))))
|
||
((name version)
|
||
(package-name->name+version name)))
|
||
(values name version sub-drv)))
|
||
|
||
|
||
;;;
|
||
;;; Command-line option processing.
|
||
;;;
|
||
|
||
(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 (_ "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
|
||
(argument-handler %default-argument-handler))
|
||
"Parse the command-line arguments ARGS as well as arguments passed via the
|
||
'GUIX_BUILD_OPTIONS' environment variable according to OPTIONS (a list of
|
||
SRFI-37 options) and return the result, seeded by SEEDS.
|
||
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 (_ "~A: unrecognized option~%") name))
|
||
argument-handler
|
||
seeds))
|
||
|
||
(call-with-values
|
||
(lambda ()
|
||
(parse-options-from (environment-build-options) seeds))
|
||
(lambda seeds
|
||
;; ARGS take precedence over what the environment variable specifies.
|
||
(parse-options-from args seeds))))
|
||
|
||
(define (show-guix-usage)
|
||
(format (current-error-port)
|
||
(_ "Try `guix --help' for more information.~%"))
|
||
(exit 1))
|
||
|
||
(define (command-files)
|
||
"Return the list of source files that define Guix sub-commands."
|
||
(define directory
|
||
(and=> (search-path %load-path "guix.scm")
|
||
(compose (cut string-append <> "/guix/scripts")
|
||
dirname)))
|
||
|
||
(define dot-scm?
|
||
(cut string-suffix? ".scm" <>))
|
||
|
||
(if directory
|
||
(scandir directory dot-scm?)
|
||
'()))
|
||
|
||
(define (commands)
|
||
"Return the list of Guix command names."
|
||
(map (compose (cut string-drop-right <> 4)
|
||
basename)
|
||
(command-files)))
|
||
|
||
(define (show-guix-help)
|
||
(define (internal? command)
|
||
(member command '("substitute" "authenticate" "offload")))
|
||
|
||
(format #t (_ "Usage: guix COMMAND ARGS...
|
||
Run COMMAND with ARGS.\n"))
|
||
(newline)
|
||
(format #t (_ "COMMAND must be one of the sub-commands listed below:\n"))
|
||
(newline)
|
||
;; TODO: Display a synopsis of each command.
|
||
(format #t "~{ ~a~%~}" (sort (remove internal? (commands))
|
||
string<?))
|
||
(show-bug-report-information))
|
||
|
||
(define program-name
|
||
;; Name of the command-line program currently executing, or #f.
|
||
(make-parameter #f))
|
||
|
||
(define (run-guix-command command . args)
|
||
"Run COMMAND with the given ARGS. Report an error when COMMAND is not
|
||
found."
|
||
(define module
|
||
(catch 'misc-error
|
||
(lambda ()
|
||
(resolve-interface `(guix scripts ,command)))
|
||
(lambda -
|
||
(format (current-error-port)
|
||
(_ "guix: ~a: command not found~%") command)
|
||
(show-guix-usage))))
|
||
|
||
(let ((command-main (module-ref module
|
||
(symbol-append 'guix- command))))
|
||
(parameterize ((program-name command))
|
||
(apply command-main args))))
|
||
|
||
(define guix-warning-port
|
||
(make-parameter (current-warning-port)))
|
||
|
||
(define (guix-main arg0 . args)
|
||
(initialize-guix)
|
||
(let ()
|
||
(define (option? str) (string-prefix? "-" str))
|
||
(match args
|
||
(()
|
||
(format (current-error-port)
|
||
(_ "guix: missing command name~%"))
|
||
(show-guix-usage))
|
||
((or ("-h") ("--help"))
|
||
(show-guix-help))
|
||
(("--version")
|
||
(show-version-and-exit "guix"))
|
||
(((? option? o) args ...)
|
||
(format (current-error-port)
|
||
(_ "guix: unrecognized option '~a'~%") o)
|
||
(show-guix-usage))
|
||
(("help" args ...)
|
||
(show-guix-help))
|
||
((command args ...)
|
||
(apply run-guix-command
|
||
(string->symbol command)
|
||
args)))))
|
||
|
||
;;; ui.scm ends here
|