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setup/git.sh: prefer git plumbing command 

git-ls-files(1) is plumbing command, its output will never change
regardless of configuration, version.

git-status(1) output will be changed depends on configuration.
At least, 986d4dbc7d (common/environment/setup/git.sh: ensure untracked
files are checked., 2017-11-24) was added to address a different output
on `status.showUntrackedFiles`.

By doing this, also reduce a pipe, and a fork-exec.

Technically, git-log(1) is also a porcelain, but I _think_ `%ct` is
stable enough to stay there. If the day has come, that `git-log(1)` can
be replaced with:

    git cat-file commit HEAD |
    sed -ne '/^committer/{s/.* \([0-9]*\) [-+][0-9][0-9][0-9][0-9]$/\1/p;q}'
This commit is contained in:
Đoàn Trần Công Danh 2020-04-20 23:18:14 +07:00 committed by Danh Doan
parent 20f9bedefb
commit fd61886616
1 changed files with 1 additions and 1 deletions
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2
common/environment/setup/git.sh
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@ -9,7 +9,7 @@ if [ -n "$XBPS_USE_BUILD_MTIME" ]; then
unset SOURCE_DATE_EPOCH
elif [ -z "${SOURCE_DATE_EPOCH}" -a -n "$IN_CHROOT" ]; then
# check if the template is under version control:
if $XBPS_GIT_CMD -C ${XBPS_SRCPKGDIR}/${basepkg} status -u normal --porcelain template | grep "^?? " &> /dev/null; then
if [ -z "$($XBPS_GIT_CMD -C ${XBPS_SRCPKGDIR}/${basepkg} ls-files template)" ]; then
export SOURCE_DATE_EPOCH="$(stat -c %Y ${XBPS_SRCPKGDIR}/${basepkg}/template)"
else
export SOURCE_DATE_EPOCH="$($XBPS_GIT_CMD -C ${XBPS_DISTDIR} log --pretty='%ct' -n1 HEAD)"