diff options
| -rw-r--r-- | Makefile.am | 1 | ||||
| -rwxr-xr-x | bootstrap | 8 | ||||
| -rwxr-xr-x | build-aux/mdate-from-git.scm | 89 |
3 files changed, 97 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 4f0ddf1933..27d76173e5 100644 --- a/Makefile.am +++ b/Makefile.am @@ -725,6 +725,7 @@ EXTRA_DIST += \ build-aux/convert-xref.scm \ build-aux/generate-authors.scm \ build-aux/git-version-gen \ + build-aux/mdate-from-git.scm \ build-aux/test-driver.scm \ build-aux/update-NEWS.scm \ build-aux/update-guix-package.scm \ @@ -24,4 +24,10 @@ for lang in ${langs}; do fi done -exec autoreconf -vfi +autoreconf -vfi + +# Replace Automake's build-aux/mdate-sh with build-aux/mdate-from-git, our +# own, reproducible version. +chmod +w build-aux/mdate-sh +rm -f build-aux/mdate-sh +ln -s mdate-from-git.scm build-aux/mdate-sh diff --git a/build-aux/mdate-from-git.scm b/build-aux/mdate-from-git.scm new file mode 100755 index 0000000000..9c6ebd6dd9 --- /dev/null +++ b/build-aux/mdate-from-git.scm @@ -0,0 +1,89 @@ +#! /bin/sh +# -*-scheme-*- +export LANG=C LANGUAGE=C LC_TIME=C +export TZ=UTC0 +exec guile --no-auto-compile -L $srcdir -C $srcdir -e '(mdate-from-git)' -s "$0" "$@" +!# + +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2024 Janneke Nieuwenhuizen <janneke@gnu.org> +;;; +;;; This file is part of GNU Guix. +;;; +;;; This program 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. +;;; +;;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>. + +;;;; Commentary: +;;; +;;; Usage: mdate-from-git.scm FILE +;;; +;;; This script is compatible with Automake's `mdate-sh' but uses the timestamp +;;; from Git instead of from the file system. Also, it can be appended to +;;; mdate-sh. + +;;; As a special exception for Guix, it caters for doc/guix.LANG.texi files that +;;; are not stored in Git, by using po/doc/guix-manual.LANG.po for the Git +;;; timestamp. Test doing something like: +;;; +;;; build-aux/mdate-from-git.scm doc/guix.de.texi +;;; +;;;; Code: + +(define-module (mdate-from-git) + #:use-module (ice-9 match) + #:use-module (ice-9 popen) + #:use-module (ice-9 rdelim) + #:use-module (ice-9 regex) + #:export (main)) + +(define (pipe-command command) + (let* ((port (apply open-pipe* OPEN_READ command)) + (output (read-string port))) + (close-port port) + output)) + +(define (guix.LANG.texi->guix-manual.LANG.po file-name) + "Translated manuals doc/guix.LANG.texi are not tracked in Git and are +generated from po/doc/guix-manual.LANG.po. For such an untraced .TEXI file, +return its .PO counterpart." + (let ((m (string-match "doc/guix.([^.]+).texi" file-name))) + (if (not m) file-name + (let ((lang (match:substring m 1))) + (format #f "po/doc/guix-manual.~a.po" lang))))) + + +;;; +;;; Entry point. +;;; +(define (main args) + (match args + ((script file-name) + (let* ((command `("git" "ls-files" "--error-unmatch" "--" ,file-name)) + (tracked? (zero? (with-error-to-port (%make-void-port "w") + (lambda _ + (with-output-to-port (%make-void-port "w") + (lambda _ (apply system* command))))))) + (file-name (if tracked? file-name + (guix.LANG.texi->guix-manual.LANG.po file-name))) + (command `("git" "log" "--pretty=format:%ct" "-n1" "--" ,file-name)) + (timestamp (with-error-to-port (%make-void-port "w") + (lambda _ (pipe-command command)))) + (source-date-epoch (or (getenv "SOURCE_DATE_EPOCH") "1")) + (timestamp (if (string-null? timestamp) source-date-epoch + timestamp)) + (time (gmtime (string->number timestamp))) + (d-m-y (strftime "%-d %B %Y" time))) + (display d-m-y))) + (_ + (format (current-error-port) "Usage: mdate-from-git.scm FILE\n") + (exit 2)))) |