From 16050ad3f292306b0421ee6133b174db3f1b227d Mon Sep 17 00:00:00 2001
From: Enno Boland <g@s01.de>
Date: Fri, 19 Feb 2016 13:45:49 +0100
Subject: [PATCH] hooks/pre-pkg: fixed mtime support for packages.

overwrites the mtime of all files in a package with the commit-date
of the package.
---
 common/hooks/pre-pkg/90-set-timestamps.sh | 26 +++++++++++++++++++++++
 etc/defaults.conf                         |  6 ++++++
 xbps-src                                  |  3 ++-
 3 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 common/hooks/pre-pkg/90-set-timestamps.sh

diff --git a/common/hooks/pre-pkg/90-set-timestamps.sh b/common/hooks/pre-pkg/90-set-timestamps.sh
new file mode 100644
index 0000000000..a60a90f1dd
--- /dev/null
+++ b/common/hooks/pre-pkg/90-set-timestamps.sh
@@ -0,0 +1,26 @@
+# This hook executes the following tasks:
+#	- sets the timestamps in a package to the commit date
+
+hook() {
+	local GIT_CMD date basepkg
+
+	# If XBPS_USE_GIT_COMMIT_DATE is disabled in conf file don't continue.
+	if [ -z $XBPS_USE_GIT_COMMIT_DATE ]; then
+		return
+	fi
+
+	if command -v chroot-git &>/dev/null; then
+		GIT_CMD=$(command -v chroot-git)
+	elif command -v git &>/dev/null; then
+		GIT_CMD=$(command -v git)
+	else
+		msg_error "$pkgver: cannot find chroot-git or git utility, exiting...\n"
+	fi
+	basepkg=$pkgname
+	if [ -L "${XBPS_SRCPKGDIR}/$basepkg" ]; then
+		basepkg=$(readlink "${XBPS_SRCPKGDIR}/$basepkg")
+	fi
+	date=$($GIT_CMD -C ${XBPS_SRCPKGDIR}/${basepkg} log --pretty='%ci' --date=iso -n1 .)
+	msg_normal "$pkgver: setting mtimes to %s\n" "$(date --date "$date")"
+	find $PKGDESTDIR -print0 | xargs -0 touch --date "$date"
+}
diff --git a/etc/defaults.conf b/etc/defaults.conf
index 500a16514f..956c5fb427 100644
--- a/etc/defaults.conf
+++ b/etc/defaults.conf
@@ -113,3 +113,9 @@ XBPS_SUCMD="sudo /bin/sh -c"
 #
 #XBPS_CHROOT_CMD=proot
 #XBPS_CHROOT_CMD_ARGS=""
+
+# [OPTIONAL]
+# Enable fixed timestamps. If set xbps-src will overwrite the mtime of all files
+# in a package with the commit date of the package.
+#
+#XBPS_USE_GIT_COMMIT_DATE=yes
diff --git a/xbps-src b/xbps-src
index 114d1e1241..4747076800 100755
--- a/xbps-src
+++ b/xbps-src
@@ -560,7 +560,8 @@ export XBPS_SHUTILSDIR XBPS_CROSSPFDIR XBPS_TRIGGERSDIR \
     XBPS_SKIP_REMOTEREPOS XBPS_CROSS_BUILD XBPS_PKG_OPTIONS XBPS_CONFIG_FILE \
     XBPS_KEEP_ALL XBPS_HOSTDIR XBPS_MASTERDIR XBPS_SRC_VERSION \
     XBPS_DESTDIR XBPS_MACHINE XBPS_TEMP_MASTERDIR XBPS_BINPKG_EXISTS \
-    XBPS_LIBEXECDIR XBPS_DISTDIR XBPS_DISTFILES_MIRROR XBPS_ALLOW_RESTRICTED
+    XBPS_LIBEXECDIR XBPS_DISTDIR XBPS_DISTFILES_MIRROR XBPS_ALLOW_RESTRICTED \
+    XBPS_USE_GIT_COMMIT_DATE
 
 for i in REPOSITORY DESTDIR BUILDDIR SRCDISTDIR; do
     eval val="\$XBPS_$i"