504 lines
19 KiB
Scheme
504 lines
19 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
|
|
;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
|
|
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
|
|
;;;
|
|
;;; 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 ui)
|
|
#:use-module (guix utils)
|
|
#:use-module (guix store)
|
|
#:use-module (guix config)
|
|
#:use-module (guix packages)
|
|
#:use-module (guix build-system)
|
|
#:use-module (guix derivations)
|
|
#:use-module ((guix licenses) #:select (license? license-name))
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-11)
|
|
#:use-module (srfi srfi-26)
|
|
#:use-module (srfi srfi-34)
|
|
#:use-module (srfi srfi-37)
|
|
#:autoload (ice-9 ftw) (scandir)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (ice-9 format)
|
|
#:export (_
|
|
N_
|
|
leave
|
|
show-version-and-exit
|
|
show-bug-report-information
|
|
string->number*
|
|
show-what-to-build
|
|
call-with-error-handling
|
|
with-error-handling
|
|
read/eval-package-expression
|
|
location->string
|
|
switch-symlinks
|
|
config-directory
|
|
fill-paragraph
|
|
string->recutils
|
|
package->recutils
|
|
args-fold*
|
|
run-guix-command
|
|
program-name
|
|
guix-warning-port
|
|
warning
|
|
guix-main))
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; User interface facilities for command-line tools.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define %gettext-domain
|
|
"guix")
|
|
|
|
(define _ (cut gettext <> %gettext-domain))
|
|
(define N_ (cut ngettext <> <> <> %gettext-domain))
|
|
|
|
(define-syntax-rule (define-diagnostic name prefix)
|
|
"Create a diagnostic macro (i.e., NAME), which will prepend PREFIX to all
|
|
messages."
|
|
(define-syntax name
|
|
(lambda (x)
|
|
(define (augmented-format-string fmt)
|
|
(string-append "~:[~*~;guix ~a: ~]~a" (syntax->datum fmt)))
|
|
|
|
(syntax-case x ()
|
|
((name (underscore fmt) args (... ...))
|
|
(and (string? (syntax->datum #'fmt))
|
|
(free-identifier=? #'underscore #'_))
|
|
(with-syntax ((fmt* (augmented-format-string #'fmt))
|
|
(prefix (datum->syntax x prefix)))
|
|
#'(format (guix-warning-port) (gettext fmt*)
|
|
(program-name) (program-name) prefix
|
|
args (... ...))))
|
|
((name (N-underscore singular plural n) args (... ...))
|
|
(and (string? (syntax->datum #'singular))
|
|
(string? (syntax->datum #'plural))
|
|
(free-identifier=? #'N-underscore #'N_))
|
|
(with-syntax ((s (augmented-format-string #'singular))
|
|
(p (augmented-format-string #'plural))
|
|
(prefix (datum->syntax x prefix)))
|
|
#'(format (guix-warning-port)
|
|
(ngettext s p n %gettext-domain)
|
|
(program-name) (program-name) prefix
|
|
args (... ...))))))))
|
|
|
|
(define-diagnostic warning "warning: ") ; emit a warning
|
|
|
|
(define-diagnostic report-error "error: ")
|
|
(define-syntax-rule (leave args ...)
|
|
"Emit an error message and exit."
|
|
(begin
|
|
(report-error args ...)
|
|
(exit 1)))
|
|
|
|
(define (install-locale)
|
|
"Install the current locale settings."
|
|
(catch 'system-error
|
|
(lambda _
|
|
(setlocale LC_ALL ""))
|
|
(lambda args
|
|
(warning (_ "failed to install locale: ~a~%")
|
|
(strerror (system-error-errno args))))))
|
|
|
|
(define (initialize-guix)
|
|
"Perform the usual initialization for stand-alone Guix commands."
|
|
(install-locale)
|
|
(textdomain "guix")
|
|
|
|
;; Ignore SIGPIPE. If the daemon closes the connection, we prefer to be
|
|
;; notified via an EPIPE later.
|
|
(sigaction SIGPIPE SIG_IGN)
|
|
|
|
(setvbuf (current-output-port) _IOLBF)
|
|
(setvbuf (current-error-port) _IOLBF))
|
|
|
|
(define* (show-version-and-exit #:optional (command (car (command-line))))
|
|
"Display version information for COMMAND and `(exit 0)'."
|
|
(simple-format #t "~a (~a) ~a~%"
|
|
command %guix-package-name %guix-version)
|
|
(exit 0))
|
|
|
|
(define (show-bug-report-information)
|
|
(format #t (_ "
|
|
Report bugs to: ~a.") %guix-bug-report-address)
|
|
(format #t (_ "
|
|
~a home page: <~a>") %guix-package-name %guix-home-page-url)
|
|
(display (_ "
|
|
General help using GNU software: <http://www.gnu.org/gethelp/>"))
|
|
(newline))
|
|
|
|
(define (string->number* str)
|
|
"Like `string->number', but error out with an error message on failure."
|
|
(or (string->number str)
|
|
(leave (_ "~a: invalid number~%") str)))
|
|
|
|
(define (call-with-error-handling thunk)
|
|
"Call THUNK within a user-friendly error handler."
|
|
(guard (c ((package-input-error? c)
|
|
(let* ((package (package-error-package c))
|
|
(input (package-error-invalid-input c))
|
|
(location (package-location package))
|
|
(file (location-file location))
|
|
(line (location-line location))
|
|
(column (location-column location)))
|
|
(leave (_ "~a:~a:~a: package `~a' has an invalid input: ~s~%")
|
|
file line column
|
|
(package-full-name package) input)))
|
|
((package-cross-build-system-error? c)
|
|
(let* ((package (package-error-package c))
|
|
(loc (package-location package))
|
|
(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))))
|
|
((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))))
|
|
;; Catch EPIPE and the likes.
|
|
(catch 'system-error
|
|
thunk
|
|
(lambda args
|
|
(leave (_ "~a~%")
|
|
(strerror (system-error-errno args)))))))
|
|
|
|
(define (read/eval-package-expression str)
|
|
"Read and evaluate STR and return the package it refers to, or exit an
|
|
error."
|
|
(let ((exp (catch #t
|
|
(lambda ()
|
|
(call-with-input-string str read))
|
|
(lambda args
|
|
(leave (_ "failed to read expression ~s: ~s~%")
|
|
str args)))))
|
|
(let ((p (catch #t
|
|
(lambda ()
|
|
(eval exp the-scm-module))
|
|
(lambda args
|
|
(leave (_ "failed to evaluate expression `~a': ~s~%")
|
|
exp args)))))
|
|
(if (package? p)
|
|
p
|
|
(leave (_ "expression `~s' does not evaluate to a package~%")
|
|
exp)))))
|
|
|
|
(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."
|
|
(let*-values (((build download)
|
|
(fold2 (lambda (drv build download)
|
|
(let-values (((b d)
|
|
(derivation-prerequisites-to-build
|
|
store drv
|
|
#:use-substitutes?
|
|
use-substitutes?)))
|
|
(values (append b build)
|
|
(append d download))))
|
|
'() '()
|
|
drv))
|
|
((build) ; add the DRV themselves
|
|
(delete-duplicates
|
|
(append (map derivation-file-name
|
|
(remove (lambda (drv)
|
|
(let ((out (derivation->output-path
|
|
drv)))
|
|
(or (valid-path? store out)
|
|
(and use-substitutes?
|
|
(has-substitutes? store
|
|
out)))))
|
|
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-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 dir)
|
|
dir)
|
|
(lambda args
|
|
(match (system-error-errno args)
|
|
((or EEXIST 0)
|
|
dir)
|
|
(err
|
|
(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 ((chars (case newlines
|
|
((0) chars)
|
|
((1) (cons #\space chars))
|
|
(else
|
|
(append (make-list newlines #\newline) chars))))
|
|
(column (case newlines
|
|
((0) column)
|
|
((1) (+ 1 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 (cdr after)))))
|
|
`(,column 0 ,chars))) ; unbreakable
|
|
`(,column 0 ,chars)))))))))
|
|
|
|
(match (string-fold maybe-break
|
|
`(,column 0 ())
|
|
str)
|
|
((_ _ chars)
|
|
(list->string (reverse chars)))))
|
|
|
|
(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 (_ str)))
|
|
(string->recutils
|
|
(fill-paragraph str width
|
|
(string-length "description: ")))))
|
|
|
|
;; 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 "location: ~a~%"
|
|
(or (and=> (package-location p) location->string)
|
|
(_ "unknown")))
|
|
(format port "home-page: ~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) _)
|
|
"")))
|
|
(format port "description: ~a~%"
|
|
(and=> (package-description p) description->recutils))
|
|
(newline port))
|
|
|
|
(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 (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" <>))
|
|
|
|
;; In Guile 2.0.5 `scandir' would return "." and ".." regardless even though
|
|
;; they don't match `dot-scm?'. Work around it by doing additional
|
|
;; filtering.
|
|
(if directory
|
|
(filter dot-scm? (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)
|
|
(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 (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))
|
|
((command args ...)
|
|
(apply run-guix-command
|
|
(string->symbol command)
|
|
args)))))
|
|
|
|
;;; ui.scm ends here
|