This is a followup to c9f321e52a.
* doc/build.scm (texinfo-manual-source)[build]: Add *.json to #$output.
		
	
			
		
			
				
	
	
		
			955 lines
		
	
	
	
		
			41 KiB
		
	
	
	
		
			Scheme
		
	
	
	
	
	
			
		
		
	
	
			955 lines
		
	
	
	
		
			41 KiB
		
	
	
	
		
			Scheme
		
	
	
	
	
	
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
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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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;; This file contains machinery to build HTML and PDF copies of the manual
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;; that can be readily published on the web site.  To do that, run:
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;;
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;;  guix build -f build.scm
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;;
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;; The result is a directory hierarchy that can be used as the manual/
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;; sub-directory of the web site.
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(use-modules (guix)
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             (guix gexp)
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             (guix git)
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             (guix git-download)
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             (guix utils)
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             (git)
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             (gnu packages base)
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             (gnu packages gawk)
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             (gnu packages gettext)
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             (gnu packages guile)
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             (gnu packages guile-xyz)
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             (gnu packages iso-codes)
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             (gnu packages texinfo)
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             (gnu packages tex)
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             (srfi srfi-19)
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             (srfi srfi-71))
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(define file-append*
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  (@@ (guix self) file-append*))
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(define translated-texi-manuals
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  (@@ (guix self) translate-texi-manuals))
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(define info-manual
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  (@@ (guix self) info-manual))
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(define %manual
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  ;; The manual to build--i.e., the base name of a .texi file, such as "guix"
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  ;; or "guix-cookbook".
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  (or (getenv "GUIX_MANUAL")
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      "guix"))
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(define %languages
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  '("de" "en" "es" "fr" "ru" "zh_CN"))
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(define (texinfo-manual-images source)
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  "Return a directory containing all the images used by the user manual, taken
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from SOURCE, the root of the source tree."
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  (define graphviz
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    (module-ref (resolve-interface '(gnu packages graphviz))
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                'graphviz))
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  (define images
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    (file-append* source "doc/images"))
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  (define build
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    (with-imported-modules '((guix build utils))
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      #~(begin
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          (use-modules (guix build utils)
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                       (srfi srfi-26))
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          (define (dot->image dot-file format)
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            (invoke #+(file-append graphviz "/bin/dot")
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                    "-T" format "-Gratio=.9" "-Gnodesep=.005"
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                    "-Granksep=.00005" "-Nfontsize=9"
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                    "-Nheight=.1" "-Nwidth=.1"
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                    "-o" (string-append #$output "/"
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                                        (basename dot-file ".dot")
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                                        "." format)
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                    dot-file))
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          ;; Build graphs.
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          (mkdir-p #$output)
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          (for-each (lambda (dot-file)
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                      (for-each (cut dot->image dot-file <>)
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                                '("png" "pdf")))
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                    (find-files #$images "\\.dot$"))
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          ;; Copy other PNGs.
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          (for-each (lambda (png-file)
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                      (install-file png-file #$output))
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                    (find-files #$images "\\.png$")))))
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  (computed-file "texinfo-manual-images" build))
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(define* (texinfo-manual-source source #:key
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                                (version "0.0")
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                                (languages %languages)
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                                (date 1))
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  "Gather all the source files of the Texinfo manuals from SOURCE--.texi file
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as well as images, OS examples, and translations."
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  (define documentation
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    (file-append* source "doc"))
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  (define examples
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    (file-append* source "gnu/system/examples"))
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  (define build
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    (with-imported-modules '((guix build utils))
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      #~(begin
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          (use-modules (guix build utils)
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                       (srfi srfi-19))
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          (define (make-version-texi language)
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            ;; Create the 'version.texi' file for LANGUAGE.
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            (let ((file (if (string=? language "en")
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                            "version.texi"
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                            (string-append "version-" language ".texi"))))
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              (call-with-output-file (string-append #$output "/" file)
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                (lambda (port)
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                  (let* ((version #$version)
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                         (time    (make-time time-utc 0 #$date))
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                         (date    (time-utc->date time)))
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                    (format port "
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@set UPDATED ~a
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@set UPDATED-MONTH ~a
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@set EDITION ~a
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@set VERSION ~a\n"
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                            (date->string date "~e ~B ~Y")
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                            (date->string date "~B ~Y")
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                            version version))))))
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          (install-file #$(file-append* documentation "/htmlxref.cnf")
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                        #$output)
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          (for-each (lambda (texi)
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                      (install-file texi #$output))
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                    (append (find-files #$documentation "\\.(texi|scm|json)$")
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                            (find-files #$(translated-texi-manuals source)
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                                        "\\.texi$")))
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          ;; Create 'version.texi'.
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          (for-each make-version-texi '#$languages)
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          ;; Copy configuration templates that the manual includes.
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          (for-each (lambda (template)
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                      (copy-file template
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                                 (string-append
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                                  #$output "/os-config-"
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                                  (basename template ".tmpl")
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                                  ".texi")))
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                    (find-files #$examples "\\.tmpl$"))
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          (symlink #$(texinfo-manual-images source)
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                   (string-append #$output "/images")))))
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  (computed-file "texinfo-manual-source" build))
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(define %web-site-url
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  ;; URL of the web site home page.
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  (or (getenv "GUIX_WEB_SITE_URL")
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      "/software/guix/"))
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(define %makeinfo-html-options
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  ;; Options passed to 'makeinfo --html'.
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  '("--css-ref=https://www.gnu.org/software/gnulib/manual.css"
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    "-c" "EXTRA_HEAD=<meta name=\"viewport\" \
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content=\"width=device-width, initial-scale=1\" />"))
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(define guile-lib/htmlprag-fixed
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  ;; Guile-Lib with a hotfix for (htmlprag).
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  (package
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    (inherit guile-lib)
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    (source (origin
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              (inherit (package-source guile-lib))
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              (modules '(( guix build utils)))
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              (snippet
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               '(begin
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                  ;; When parsing
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                  ;; "<body><blockquote><p>foo</p>\n</blockquote></body>",
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                  ;; 'html->shtml' would mistakenly close 'blockquote' right
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                  ;; before <p>.  This patch removes 'p' from the
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                  ;; 'parent-constraints' alist to fix that.
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                  (substitute* "src/htmlprag.scm"
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                    (("^[[:blank:]]*\\(p[[:blank:]]+\\. \\(body td th\\)\\).*")
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                     ""))
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                  #t))))
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    (arguments
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     (substitute-keyword-arguments (package-arguments guile-lib)
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       ((#:phases phases '%standard-phases)
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        `(modify-phases ,phases
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          (add-before 'check 'skip-known-failure
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            (lambda _
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              ;; XXX: The above change causes one test failure among
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              ;; the htmlprag tests.
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              (setenv "XFAIL_TESTS" "htmlprag.scm")
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              #t))))))))
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(define* (syntax-highlighted-html input
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                                  #:key
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                                  (name "highlighted-syntax")
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                                  (syntax-css-url
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                                   "/static/base/css/code.css"))
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  "Return a derivation called NAME that processes all the HTML files in INPUT
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to (1) add them a link to SYNTAX-CSS-URL, and (2) highlight the syntax of all
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its <pre class=\"lisp\"> blocks (as produced by 'makeinfo --html')."
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  (define build
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    (with-extensions (list guile-lib/htmlprag-fixed guile-syntax-highlight)
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      (with-imported-modules '((guix build utils))
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        #~(begin
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            (use-modules (htmlprag)
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                         (syntax-highlight)
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                         (syntax-highlight scheme)
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                         (syntax-highlight lexers)
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                         (guix build utils)
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                         (srfi srfi-1)
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                         (srfi srfi-26)
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                         (ice-9 match)
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                         (ice-9 threads)
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                         (ice-9 vlist))
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            (define (pair-open/close lst)
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              ;; Pair 'open' and 'close' tags produced by 'highlights' and
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              ;; produce nested 'paren' tags instead.
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              (let loop ((lst lst)
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                         (level 0)
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                         (result '()))
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                (match lst
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                  ((('open open) rest ...)
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                   (call-with-values
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                       (lambda ()
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                         (loop rest (+ 1 level) '()))
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                     (lambda (inner close rest)
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                       (loop rest level
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                             (cons `(paren ,level ,open ,inner ,close)
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                                   result)))))
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                  ((('close str) rest ...)
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                   (if (> level 0)
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                       (values (reverse result) str rest)
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                       (begin
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                         (format (current-error-port)
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                                 "warning: extra closing paren; context:~% ~y~%"
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                                 (reverse result))
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                         (loop rest 0 (cons `(close ,str) result)))))
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                  ((item rest ...)
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                   (loop rest level (cons item result)))
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                  (()
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                   (when (> level 0)
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                     (format (current-error-port)
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                             "warning: missing ~a closing parens; context:~% ~y%"
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                             level (reverse result)))
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                   (values (reverse result) "" '())))))
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            (define (highlights->sxml* highlights anchors)
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              ;; Like 'highlights->sxml', but handle nested 'paren tags.  This
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              ;; allows for paren matching highlights via appropriate CSS
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              ;; "hover" properties.  When a symbol is encountered, look it up
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              ;; in ANCHORS, a vhash, and emit the corresponding href, if any.
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              (define (tag->class tag)
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                (string-append "syntax-" (symbol->string tag)))
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              (map (match-lambda
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                     ((? string? str) str)
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                     (('paren level open (body ...) close)
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                      `(span (@ (class ,(string-append "syntax-paren"
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                                                       (number->string level))))
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                             ,open
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                             (span (@ (class "syntax-symbol"))
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                                   ,@(highlights->sxml* body anchors))
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                             ,close))
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                     (('symbol text)
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                      ;; Check whether we can emit a hyperlink for TEXT.
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                      (match (vhash-assoc text anchors)
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                        (#f
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                         `(span (@ (class ,(tag->class 'symbol))) ,text))
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                        ((_ . target)
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                         `(a (@ (class ,(tag->class 'symbol)) (href ,target))
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                             ,text))))
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                     ((tag text)
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                      `(span (@ (class ,(tag->class tag))) ,text)))
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                   highlights))
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            (define entity->string
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              (match-lambda
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                ("rArr"   "⇒")
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                ("rarr"   "→")
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                ("hellip" "…")
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                ("rsquo"  "’")
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                (e (pk 'unknown-entity e) (primitive-exit 2))))
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            (define (concatenate-snippets pieces)
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              ;; Concatenate PIECES, which contains strings and entities,
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              ;; replacing entities with their corresponding string.
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              (let loop ((pieces pieces)
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                         (strings '()))
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                (match pieces
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                  (()
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                   (string-concatenate-reverse strings))
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                  (((? string? str) . rest)
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                   (loop rest (cons str strings)))
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                  ((('*ENTITY* "additional" entity) . rest)
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                   (loop rest (cons (entity->string entity) strings)))
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                  ((('span _ lst ...) . rest)     ;for <span class="roman">
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                   (loop (append lst rest) strings))
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                  (something
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                   (pk 'unsupported-code-snippet something)
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                   (primitive-exit 1)))))
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            (define (syntax-highlight sxml anchors)
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              ;; Recurse over SXML and syntax-highlight code snippets.
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              (let loop ((sxml sxml))
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                (match sxml
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                  (('*TOP* decl body ...)
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                   `(*TOP* ,decl ,@(map loop body)))
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                  (('head things ...)
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                   `(head ,@things
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                          (link (@ (rel "stylesheet")
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                                   (type "text/css")
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                                   (href #$syntax-css-url)))))
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                  (('pre ('@ ('class "lisp")) code-snippet ...)
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                   `(pre (@ (class "lisp"))
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                         ,@(highlights->sxml*
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                            (pair-open/close
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                             (highlight lex-scheme
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                                        (concatenate-snippets code-snippet)))
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                            anchors)))
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                  ((tag ('@ attributes ...) body ...)
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                   `(,tag (@ ,@attributes) ,@(map loop body)))
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                  ((tag body ...)
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                   `(,tag ,@(map loop body)))
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                  ((? string? str)
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                   str))))
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            (define (underscore-decode str)
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              ;; Decode STR, an "underscore-encoded" string as produced by
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              ;; makeinfo for indexes, such as "_0025base_002dservices" for
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              ;; "%base-services".
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              (let loop ((str str)
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                         (result '()))
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                (match (string-index str #\_)
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                  (#f
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                   (string-concatenate-reverse (cons str result)))
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                  (index
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                   (let ((char (string->number
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                                (substring str (+ index 1) (+ index 5))
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                                16)))
 | 
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                     (loop (string-drop str (+ index 5))
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                           (append (list (string (integer->char char))
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                                         (string-take str index))
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                                   result)))))))
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            (define (anchor-id->key id)
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              ;; Convert ID, an anchor ID such as
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              ;; "index-pam_002dlimits_002dservice" to the corresponding key,
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              ;; "pam-limits-service" in this example.  Drop the suffix of
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              ;; duplicate anchor IDs like "operating_002dsystem-1".
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              (let ((id (if (any (cut string-suffix? <> id)
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                                 '("-1" "-2" "-3" "-4" "-5"))
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                            (string-drop-right id 2)
 | 
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                            id)))
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                (underscore-decode
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                 (string-drop id (string-length "index-")))))
 | 
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 | 
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            (define* (collect-anchors file #:optional (vhash vlist-null))
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              ;; Collect the anchors that appear in FILE, a makeinfo-generated
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              ;; file.  Grab those from <dt> tags, which corresponds to
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              ;; Texinfo @deftp, @defvr, etc.  Return VHASH augmented with
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              ;; more name/reference pairs.
 | 
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              (define string-or-entity?
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                (match-lambda
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                  ((? string?) #t)
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                  (('*ENTITY* _ ...) #t)
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                  (_ #f)))
 | 
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              (define (worthy-entry? lst)
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                ;; Attempt to match:
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                ;;   Scheme Variable: <strong>x</strong>
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                ;; but not:
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                ;;   <code>cups-configuration</code> parameter: …
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                (let loop ((lst lst))
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                  (match lst
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                    (((? string-or-entity?) rest ...)
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                     (loop rest))
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                    ((('strong _ ...) _ ...)
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                     #t)
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                    (_ #f))))
 | 
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 | 
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              (let ((shtml (call-with-input-file file html->shtml)))
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                (let loop ((shtml shtml)
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                           (vhash vhash))
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                  (match shtml
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                    (('dt ('@ ('id id)) rest ...)
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                     (if (and (string-prefix? "index-" id)
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                              (worthy-entry? rest))
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                         (vhash-cons (anchor-id->key id)
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                                     (string-append (basename file)
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                                                    "#" id)
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                                     vhash)
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                         vhash))
 | 
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                    ((tag ('@ _ ...) body ...)
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                     (fold loop vhash body))
 | 
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                    ((tag body ...)
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                     (fold loop vhash body))
 | 
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                    (_ vhash)))))
 | 
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 | 
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            (define (process-html file anchors)
 | 
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              ;; Parse FILE and perform syntax highlighting for its Scheme
 | 
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              ;; snippets.  Install the result to #$output.
 | 
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              (format (current-error-port) "processing ~a...~%" file)
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              (let* ((shtml        (call-with-input-file file html->shtml))
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                     (highlighted  (syntax-highlight shtml anchors))
 | 
						||
                     (base         (string-drop file (string-length #$input)))
 | 
						||
                     (target       (string-append #$output base)))
 | 
						||
                (mkdir-p (dirname target))
 | 
						||
                (call-with-output-file target
 | 
						||
                  (lambda (port)
 | 
						||
                    (write-shtml-as-html highlighted port)))))
 | 
						||
 | 
						||
            (define (copy-as-is file)
 | 
						||
              ;; Copy FILE as is to #$output.
 | 
						||
              (let* ((base   (string-drop file (string-length #$input)))
 | 
						||
                     (target (string-append #$output base)))
 | 
						||
                (mkdir-p (dirname target))
 | 
						||
                (catch 'system-error
 | 
						||
                  (lambda ()
 | 
						||
                    (if (eq? 'symlink (stat:type (lstat file)))
 | 
						||
                        (symlink (readlink file) target)
 | 
						||
                        (link file target)))
 | 
						||
                  (lambda args
 | 
						||
                    (let ((errno (system-error-errno args)))
 | 
						||
                      (pk 'error-link file target (strerror errno))
 | 
						||
                      (primitive-exit 3))))))
 | 
						||
 | 
						||
            (define (html? file stat)
 | 
						||
              (string-suffix? ".html" file))
 | 
						||
 | 
						||
            ;; Install a UTF-8 locale so we can process UTF-8 files.
 | 
						||
            (setenv "GUIX_LOCPATH"
 | 
						||
                    #+(file-append glibc-utf8-locales "/lib/locale"))
 | 
						||
            (setlocale LC_ALL "en_US.utf8")
 | 
						||
 | 
						||
            ;; First process the mono-node 'guix.html' files.
 | 
						||
            (n-par-for-each (parallel-job-count)
 | 
						||
                            (lambda (mono)
 | 
						||
                              (let ((anchors (collect-anchors mono)))
 | 
						||
                                (process-html mono anchors)))
 | 
						||
                            (find-files #$input "^guix(\\.[a-zA-Z_-]+)?\\.html$"))
 | 
						||
 | 
						||
            ;; Next process the multi-node HTML files in two phases: (1)
 | 
						||
            ;; collect the list of anchors, and (2) perform
 | 
						||
            ;; syntax-highlighting.
 | 
						||
            (let* ((multi   (find-files #$input "^html_node$"
 | 
						||
                                        #:directories? #t))
 | 
						||
                   (anchors (n-par-map (parallel-job-count)
 | 
						||
                                       (lambda (multi)
 | 
						||
                                         (cons multi
 | 
						||
                                               (fold collect-anchors vlist-null
 | 
						||
                                                     (find-files multi html?))))
 | 
						||
                                       multi)))
 | 
						||
              (n-par-for-each (parallel-job-count)
 | 
						||
                              (lambda (file)
 | 
						||
                                (let ((anchors (assoc-ref anchors (dirname file))))
 | 
						||
                                  (process-html file anchors)))
 | 
						||
                              (append-map (lambda (multi)
 | 
						||
                                            (find-files multi html?))
 | 
						||
                                          multi)))
 | 
						||
 | 
						||
            ;; Last, copy non-HTML files as is.
 | 
						||
            (for-each copy-as-is
 | 
						||
                      (find-files #$input (negate html?)))))))
 | 
						||
 | 
						||
  (computed-file name build))
 | 
						||
 | 
						||
(define* (html-manual source #:key (languages %languages)
 | 
						||
                      (version "0.0")
 | 
						||
                      (manual %manual)
 | 
						||
                      (date 1)
 | 
						||
                      (options %makeinfo-html-options))
 | 
						||
  "Return the HTML manuals built from SOURCE for all LANGUAGES, with the given
 | 
						||
makeinfo OPTIONS."
 | 
						||
  (define manual-source
 | 
						||
    (texinfo-manual-source source
 | 
						||
                           #:version version
 | 
						||
                           #:languages languages
 | 
						||
                           #:date date))
 | 
						||
 | 
						||
  (define images
 | 
						||
    (texinfo-manual-images source))
 | 
						||
 | 
						||
  (define build
 | 
						||
    (with-imported-modules '((guix build utils))
 | 
						||
      #~(begin
 | 
						||
          (use-modules (guix build utils)
 | 
						||
                       (ice-9 match))
 | 
						||
 | 
						||
          (define (normalize language)
 | 
						||
            ;; Normalize LANGUAGE.  For instance, "zh_CN" becomes "zh-cn".
 | 
						||
            (string-map (match-lambda
 | 
						||
                          (#\_ #\-)
 | 
						||
                          (chr chr))
 | 
						||
                        (string-downcase language)))
 | 
						||
 | 
						||
          (define (language->texi-file-name language)
 | 
						||
            (if (string=? language "en")
 | 
						||
                (string-append #$manual-source "/"
 | 
						||
                               #$manual ".texi")
 | 
						||
                (string-append #$manual-source "/"
 | 
						||
                               #$manual "." language ".texi")))
 | 
						||
 | 
						||
          ;; Install a UTF-8 locale so that 'makeinfo' is at ease.
 | 
						||
          (setenv "GUIX_LOCPATH"
 | 
						||
                  #+(file-append glibc-utf8-locales "/lib/locale"))
 | 
						||
          (setenv "LC_ALL" "en_US.utf8")
 | 
						||
 | 
						||
          (setvbuf (current-output-port) 'line)
 | 
						||
          (setvbuf (current-error-port) 'line)
 | 
						||
 | 
						||
          ;; 'makeinfo' looks for "htmlxref.cnf" in the current directory, so
 | 
						||
          ;; copy it right here.
 | 
						||
          (copy-file (string-append #$manual-source "/htmlxref.cnf")
 | 
						||
                     "htmlxref.cnf")
 | 
						||
 | 
						||
          (for-each (lambda (language)
 | 
						||
                      (let* ((texi (language->texi-file-name language))
 | 
						||
                             (opts `("--html"
 | 
						||
                                     "-c" ,(string-append "TOP_NODE_UP_URL=/manual/"
 | 
						||
                                                         language)
 | 
						||
                                     #$@options
 | 
						||
                                     ,texi)))
 | 
						||
                        (format #t "building HTML manual for language '~a'...~%"
 | 
						||
                                language)
 | 
						||
                        (mkdir-p (string-append #$output "/"
 | 
						||
                                                (normalize language)))
 | 
						||
                        (setenv "LANGUAGE" language)
 | 
						||
                        (apply invoke #$(file-append texinfo "/bin/makeinfo")
 | 
						||
                               "-o" (string-append #$output "/"
 | 
						||
                                                   (normalize language)
 | 
						||
                                                   "/html_node")
 | 
						||
                               opts)
 | 
						||
                        (apply invoke #$(file-append texinfo "/bin/makeinfo")
 | 
						||
                               "--no-split"
 | 
						||
                               "-o"
 | 
						||
                               (string-append #$output "/"
 | 
						||
                                              (normalize language)
 | 
						||
                                              "/" #$manual
 | 
						||
                                              (if (string=? language "en")
 | 
						||
                                                  ""
 | 
						||
                                                  (string-append "." language))
 | 
						||
                                              ".html")
 | 
						||
                               opts)
 | 
						||
 | 
						||
                        ;; Make sure images are available.
 | 
						||
                        (symlink #$images
 | 
						||
                                 (string-append #$output "/" (normalize language)
 | 
						||
                                                "/images"))
 | 
						||
                        (symlink #$images
 | 
						||
                                 (string-append #$output "/" (normalize language)
 | 
						||
                                                "/html_node/images"))))
 | 
						||
                    (filter (compose file-exists? language->texi-file-name)
 | 
						||
                            '#$languages)))))
 | 
						||
 | 
						||
  (let* ((name   (string-append manual "-html-manual"))
 | 
						||
         (manual (computed-file name build)))
 | 
						||
    (syntax-highlighted-html manual
 | 
						||
                             #:name (string-append name "-highlighted"))))
 | 
						||
 | 
						||
(define* (pdf-manual source #:key (languages %languages)
 | 
						||
                     (version "0.0")
 | 
						||
                     (manual %manual)
 | 
						||
                     (date 1)
 | 
						||
                     (options '()))
 | 
						||
  "Return the HTML manuals built from SOURCE for all LANGUAGES, with the given
 | 
						||
makeinfo OPTIONS."
 | 
						||
  (define manual-source
 | 
						||
    (texinfo-manual-source source
 | 
						||
                           #:version version
 | 
						||
                           #:languages languages
 | 
						||
                           #:date date))
 | 
						||
 | 
						||
  ;; FIXME: This union works, except for the table of contents of non-English
 | 
						||
  ;; manuals, which contains escape sequences like "^^ca^^fe" instead of
 | 
						||
  ;; accented letters.
 | 
						||
  ;;
 | 
						||
  ;; (define texlive
 | 
						||
  ;;   (texlive-union (list texlive-tex-texinfo
 | 
						||
  ;;                        texlive-generic-epsf
 | 
						||
  ;;                        texlive-fonts-ec)))
 | 
						||
 | 
						||
  (define build
 | 
						||
    (with-imported-modules '((guix build utils))
 | 
						||
      #~(begin
 | 
						||
          (use-modules (guix build utils)
 | 
						||
                       (srfi srfi-34)
 | 
						||
                       (ice-9 match))
 | 
						||
 | 
						||
          (define (normalize language)            ;XXX: deduplicate
 | 
						||
            ;; Normalize LANGUAGE.  For instance, "zh_CN" becomes "zh-cn".
 | 
						||
            (string-map (match-lambda
 | 
						||
                          (#\_ #\-)
 | 
						||
                          (chr chr))
 | 
						||
                        (string-downcase language)))
 | 
						||
 | 
						||
          ;; Install a UTF-8 locale so that 'makeinfo' is at ease.
 | 
						||
          (setenv "GUIX_LOCPATH"
 | 
						||
                  #+(file-append glibc-utf8-locales "/lib/locale"))
 | 
						||
          (setenv "LC_ALL" "en_US.utf8")
 | 
						||
          (setenv "PATH"
 | 
						||
                  (string-append #+(file-append texlive "/bin") ":"
 | 
						||
                                 #+(file-append texinfo "/bin") ":"
 | 
						||
 | 
						||
                                 ;; Below are command-line tools needed by
 | 
						||
                                 ;; 'texi2dvi' and friends.
 | 
						||
                                 #+(file-append sed "/bin") ":"
 | 
						||
                                 #+(file-append grep "/bin") ":"
 | 
						||
                                 #+(file-append coreutils "/bin") ":"
 | 
						||
                                 #+(file-append gawk "/bin") ":"
 | 
						||
                                 #+(file-append tar "/bin") ":"
 | 
						||
                                 #+(file-append diffutils "/bin")))
 | 
						||
 | 
						||
          (setvbuf (current-output-port) 'line)
 | 
						||
          (setvbuf (current-error-port) 'line)
 | 
						||
 | 
						||
          (setenv "HOME" (getcwd))                ;for kpathsea/mktextfm
 | 
						||
 | 
						||
          ;; 'SOURCE_DATE_EPOCH' is honored by pdftex.
 | 
						||
          (setenv "SOURCE_DATE_EPOCH" "1")
 | 
						||
 | 
						||
          (for-each (lambda (language)
 | 
						||
                      (let ((opts `("--pdf"
 | 
						||
                                    "-I" "."
 | 
						||
                                    #$@options
 | 
						||
                                    ,(if (string=? language "en")
 | 
						||
                                         (string-append #$manual-source "/"
 | 
						||
                                                        #$manual ".texi")
 | 
						||
                                         (string-append #$manual-source "/"
 | 
						||
                                                        #$manual "." language ".texi")))))
 | 
						||
                        (format #t "building PDF manual for language '~a'...~%"
 | 
						||
                                language)
 | 
						||
                        (mkdir-p (string-append #$output "/"
 | 
						||
                                                (normalize language)))
 | 
						||
                        (setenv "LANGUAGE" language)
 | 
						||
 | 
						||
 | 
						||
                        ;; FIXME: Unfortunately building PDFs for non-Latin
 | 
						||
                        ;; alphabets doesn't work:
 | 
						||
                        ;; <https://lists.gnu.org/archive/html/help-texinfo/2012-01/msg00014.html>.
 | 
						||
                        (guard (c ((invoke-error? c)
 | 
						||
                                   (format (current-error-port)
 | 
						||
                                           "~%~%Failed to produce \
 | 
						||
PDF for language '~a'!~%~%"
 | 
						||
                                           language)))
 | 
						||
                         (apply invoke #$(file-append texinfo "/bin/makeinfo")
 | 
						||
                                "--pdf" "-o"
 | 
						||
                                (string-append #$output "/"
 | 
						||
                                               (normalize language)
 | 
						||
                                               "/" #$manual
 | 
						||
                                               (if (string=? language "en")
 | 
						||
                                                   ""
 | 
						||
                                                   (string-append "."
 | 
						||
                                                                  language))
 | 
						||
                                               ".pdf")
 | 
						||
                                opts))))
 | 
						||
                    '#$languages))))
 | 
						||
 | 
						||
  (computed-file (string-append manual "-pdf-manual") build))
 | 
						||
 | 
						||
(define (guix-manual-text-domain source languages)
 | 
						||
  "Return the PO files for LANGUAGES of the 'guix-manual' text domain taken
 | 
						||
from SOURCE."
 | 
						||
  (define po-directory
 | 
						||
    (file-append* source "/po/doc"))
 | 
						||
 | 
						||
  (define build
 | 
						||
    (with-imported-modules '((guix build utils))
 | 
						||
      #~(begin
 | 
						||
          (use-modules (guix build utils))
 | 
						||
 | 
						||
          (mkdir-p #$output)
 | 
						||
          (for-each (lambda (language)
 | 
						||
                      (define directory
 | 
						||
                        (string-append #$output "/" language
 | 
						||
                                       "/LC_MESSAGES"))
 | 
						||
 | 
						||
                      (mkdir-p directory)
 | 
						||
                      (invoke #+(file-append gnu-gettext "/bin/msgfmt")
 | 
						||
                              "-c" "-o"
 | 
						||
                              (string-append directory "/guix-manual.mo")
 | 
						||
                              (string-append #$po-directory "/guix-manual."
 | 
						||
                                             language ".po")))
 | 
						||
                    '#$(delete "en" languages)))))
 | 
						||
 | 
						||
  (computed-file "guix-manual-po" build))
 | 
						||
 | 
						||
(define* (html-manual-indexes source
 | 
						||
                              #:key (languages %languages)
 | 
						||
                              (version "0.0")
 | 
						||
                              (manual %manual)
 | 
						||
                              (title (if (string=? "guix" manual)
 | 
						||
                                         "GNU Guix Reference Manual"
 | 
						||
                                         "GNU Guix Cookbook"))
 | 
						||
                              (date 1))
 | 
						||
  (define build
 | 
						||
    (with-extensions (list guile-json-3)
 | 
						||
      (with-imported-modules '((guix build utils))
 | 
						||
        #~(begin
 | 
						||
            (use-modules (guix build utils)
 | 
						||
                         (json)
 | 
						||
                         (ice-9 match)
 | 
						||
                         (ice-9 popen)
 | 
						||
                         (sxml simple)
 | 
						||
                         (srfi srfi-1)
 | 
						||
                         (srfi srfi-19))
 | 
						||
 | 
						||
            (define (normalize language)          ;XXX: deduplicate
 | 
						||
              ;; Normalize LANGUAGE.  For instance, "zh_CN" becomes "zh-cn".
 | 
						||
              (string-map (match-lambda
 | 
						||
                            (#\_ #\-)
 | 
						||
                            (chr chr))
 | 
						||
                          (string-downcase language)))
 | 
						||
 | 
						||
            (define-syntax-rule (with-language language exp ...)
 | 
						||
              (let ((lang (getenv "LANGUAGE")))
 | 
						||
                (dynamic-wind
 | 
						||
                  (lambda ()
 | 
						||
                    (setenv "LANGUAGE" language)
 | 
						||
                    (setlocale LC_MESSAGES))
 | 
						||
                  (lambda () exp ...)
 | 
						||
                  (lambda ()
 | 
						||
                    (if lang
 | 
						||
                        (setenv "LANGUAGE" lang)
 | 
						||
                        (unsetenv "LANGUAGE"))
 | 
						||
                    (setlocale LC_MESSAGES)))))
 | 
						||
 | 
						||
            ;; (put 'with-language 'scheme-indent-function 1)
 | 
						||
            (define* (translate str language
 | 
						||
                                #:key (domain "guix-manual"))
 | 
						||
              (define exp
 | 
						||
                `(begin
 | 
						||
                   (bindtextdomain "guix-manual"
 | 
						||
                                   #+(guix-manual-text-domain
 | 
						||
                                      source
 | 
						||
                                      languages))
 | 
						||
                   (bindtextdomain "iso_639-3"    ;language names
 | 
						||
                                   #+(file-append iso-codes
 | 
						||
                                                  "/share/locale"))
 | 
						||
                   (write (gettext ,str ,domain))))
 | 
						||
 | 
						||
              (with-language language
 | 
						||
                ;; Since the 'gettext' function caches msgid translations,
 | 
						||
                ;; regardless of $LANGUAGE, we have to spawn a new process each
 | 
						||
                ;; time we want to translate to a different language.  Bah!
 | 
						||
                (let* ((pipe (open-pipe* OPEN_READ
 | 
						||
                                         #+(file-append guile-2.2
 | 
						||
                                                        "/bin/guile")
 | 
						||
                                         "-c" (object->string exp)))
 | 
						||
                       (str  (read pipe)))
 | 
						||
                  (close-pipe pipe)
 | 
						||
                  str)))
 | 
						||
 | 
						||
            (define (seconds->string seconds language)
 | 
						||
              (let* ((time (make-time time-utc 0 seconds))
 | 
						||
                     (date (time-utc->date time)))
 | 
						||
                (with-language language (date->string date "~e ~B ~Y"))))
 | 
						||
 | 
						||
            (define (guix-url path)
 | 
						||
              (string-append #$%web-site-url path))
 | 
						||
 | 
						||
            (define (sxml-index language title body)
 | 
						||
              ;; FIXME: Avoid duplicating styling info from guix-artwork.git.
 | 
						||
              `(html (@ (lang ,language))
 | 
						||
                     (head
 | 
						||
                      (title ,(string-append title " — GNU Guix"))
 | 
						||
                      (meta (@ (charset "UTF-8")))
 | 
						||
                      (meta (@ (name "viewport") (content "width=device-width, initial-scale=1.0")))
 | 
						||
                      ;; Menu prefetch.
 | 
						||
                      (link (@ (rel "prefetch") (href ,(guix-url "menu/index.html"))))
 | 
						||
                      ;; Base CSS.
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/elements.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/common.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/messages.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/navbar.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/breadcrumbs.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/buttons.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/footer.css"))))
 | 
						||
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/page.css"))))
 | 
						||
                      (link (@ (rel "stylesheet") (href ,(guix-url "static/base/css/post.css")))))
 | 
						||
                     (body
 | 
						||
                      (header (@ (class "navbar"))
 | 
						||
                              (h1 (a (@ (class "branding")
 | 
						||
                                        (href #$%web-site-url)))
 | 
						||
                                  (span (@ (class "a11y-offset"))
 | 
						||
                                        "Guix"))
 | 
						||
                              (nav (@ (class "menu"))))
 | 
						||
                      (nav (@ (class "breadcrumbs"))
 | 
						||
                           (a (@ (class "crumb")
 | 
						||
                                 (href #$%web-site-url))
 | 
						||
                              "Home"))
 | 
						||
                      ,body
 | 
						||
                      (footer))))
 | 
						||
 | 
						||
            (define (language-index language)
 | 
						||
              (define title
 | 
						||
                (translate #$title language))
 | 
						||
 | 
						||
              (sxml-index
 | 
						||
               language title
 | 
						||
               `(main
 | 
						||
                 (article
 | 
						||
                  (@ (class "page centered-block limit-width"))
 | 
						||
                  (h2 ,title)
 | 
						||
                  (p (@ (class "post-metadata centered-text"))
 | 
						||
                     #$version " — "
 | 
						||
                     ,(seconds->string #$date language))
 | 
						||
 | 
						||
                  (div
 | 
						||
                   (ul
 | 
						||
                    (li (a (@ (href "html_node"))
 | 
						||
                           "HTML, with one page per node"))
 | 
						||
                    (li (a (@ (href
 | 
						||
                               ,(string-append
 | 
						||
                                 #$manual
 | 
						||
                                 (if (string=? language
 | 
						||
                                               "en")
 | 
						||
                                     ""
 | 
						||
                                     (string-append "."
 | 
						||
                                                    language))
 | 
						||
                                 ".html")))
 | 
						||
                           "HTML, entirely on one page"))
 | 
						||
                    ,@(if (member language '("ru" "zh_CN"))
 | 
						||
                          '()
 | 
						||
                          `((li (a (@ (href ,(string-append
 | 
						||
                                              #$manual
 | 
						||
                                              (if (string=? language "en")
 | 
						||
                                                  ""
 | 
						||
                                                  (string-append "."
 | 
						||
                                                                 language))
 | 
						||
                                              ".pdf"))))
 | 
						||
                                "PDF")))))))))
 | 
						||
 | 
						||
            (define %iso639-languages
 | 
						||
              (vector->list
 | 
						||
               (assoc-ref (call-with-input-file
 | 
						||
                              #+(file-append iso-codes
 | 
						||
                                             "/share/iso-codes/json/iso_639-3.json")
 | 
						||
                            json->scm)
 | 
						||
                          "639-3")))
 | 
						||
 | 
						||
            (define (language-code->name code)
 | 
						||
              "Return the full name of a language from its ISO-639-3 code."
 | 
						||
              (let ((code (match (string-index code #\_)
 | 
						||
                            (#f    code)
 | 
						||
                            (index (string-take code index)))))
 | 
						||
               (any (lambda (language)
 | 
						||
                      (and (string=? (or (assoc-ref language "alpha_2")
 | 
						||
                                         (assoc-ref language "alpha_3"))
 | 
						||
                                     code)
 | 
						||
                           (assoc-ref language "name")))
 | 
						||
                    %iso639-languages)))
 | 
						||
 | 
						||
            (define (top-level-index languages)
 | 
						||
              (define title #$title)
 | 
						||
              (sxml-index
 | 
						||
               "en" title
 | 
						||
               `(main
 | 
						||
                 (article
 | 
						||
                  (@ (class "page centered-block limit-width"))
 | 
						||
                  (h2 ,title)
 | 
						||
                  (div
 | 
						||
                   "This document is available in the following
 | 
						||
languages:\n"
 | 
						||
                   (ul
 | 
						||
                    ,@(map (lambda (language)
 | 
						||
                             `(li (a (@ (href ,(normalize language)))
 | 
						||
                                     ,(translate
 | 
						||
                                       (language-code->name language)
 | 
						||
                                       language
 | 
						||
                                       #:domain "iso_639-3"))))
 | 
						||
                           languages)))))))
 | 
						||
 | 
						||
            (define (write-html file sxml)
 | 
						||
              (call-with-output-file file
 | 
						||
                (lambda (port)
 | 
						||
                  (display "<!DOCTYPE html>\n" port)
 | 
						||
                  (sxml->xml sxml port))))
 | 
						||
 | 
						||
            (setenv "GUIX_LOCPATH"
 | 
						||
                    #+(file-append glibc-utf8-locales "/lib/locale"))
 | 
						||
            (setenv "LC_ALL" "en_US.utf8")
 | 
						||
            (setlocale LC_ALL "en_US.utf8")
 | 
						||
 | 
						||
            (for-each (lambda (language)
 | 
						||
                        (define directory
 | 
						||
                          (string-append #$output "/"
 | 
						||
                                         (normalize language)))
 | 
						||
 | 
						||
                        (mkdir-p directory)
 | 
						||
                        (write-html (string-append directory "/index.html")
 | 
						||
                                    (language-index language)))
 | 
						||
                      '#$languages)
 | 
						||
 | 
						||
            (write-html (string-append #$output "/index.html")
 | 
						||
                        (top-level-index '#$languages))))))
 | 
						||
 | 
						||
  (computed-file "html-indexes" build))
 | 
						||
 | 
						||
(define* (pdf+html-manual source
 | 
						||
                          #:key (languages %languages)
 | 
						||
                          (version "0.0")
 | 
						||
                          (date (time-second (current-time time-utc)))
 | 
						||
                          (manual %manual))
 | 
						||
  "Return the union of the HTML and PDF manuals, as well as the indexes."
 | 
						||
  (directory-union (string-append manual "-manual")
 | 
						||
                   (map (lambda (proc)
 | 
						||
                          (proc source
 | 
						||
                                #:date date
 | 
						||
                                #:languages languages
 | 
						||
                                #:version version
 | 
						||
                                #:manual manual))
 | 
						||
                        (list html-manual-indexes
 | 
						||
                              html-manual pdf-manual))
 | 
						||
                   #:copy? #t))
 | 
						||
 | 
						||
(define (latest-commit+date directory)
 | 
						||
  "Return two values: the last commit ID (a hex string) for DIRECTORY, and its
 | 
						||
commit date (an integer)."
 | 
						||
  (let* ((repository (repository-open directory))
 | 
						||
         (head       (repository-head repository))
 | 
						||
         (oid        (reference-target head))
 | 
						||
         (commit     (commit-lookup repository oid)))
 | 
						||
    ;; TODO: Use (git describe) when it's widely available.
 | 
						||
    (values (oid->string oid) (commit-time commit))))
 | 
						||
 | 
						||
 | 
						||
(let* ((root (canonicalize-path
 | 
						||
              (string-append (current-source-directory) "/..")))
 | 
						||
       (commit date (latest-commit+date root)))
 | 
						||
  (format (current-error-port)
 | 
						||
          "building manual from work tree around commit ~a, ~a~%"
 | 
						||
          commit
 | 
						||
          (let* ((time (make-time time-utc 0 date))
 | 
						||
                 (date (time-utc->date time)))
 | 
						||
            (date->string date "~e ~B ~Y")))
 | 
						||
  (pdf+html-manual (local-file root "guix" #:recursive? #t
 | 
						||
                               #:select? (git-predicate root))
 | 
						||
                   #:version (or (getenv "GUIX_MANUAL_VERSION")
 | 
						||
                                 (string-take commit 7))
 | 
						||
                   #:date date))
 |