Save SOURCE_DATE_EPOCH to a file and read it from the file when resuming a build

Print the build date.
Don't re-run mksquashfs if it succeeded, but the failure was in gpg signing. For example, if the gpg pinentry timed out.

1 files changed, 12 insertions, 6 deletions

diff --git a/archiso/mkarchiso b/archiso/mkarchiso
index 2e31e65..6153c4e 100755
--- a/archiso/mkarchiso
+++ b/archiso/mkarchiso
@@ -149,7 +149,8 @@ ENDUSAGETEXT
 # Shows configuration according to command mode.
 # $1: build_profile | init | install | run | prepare | iso
 _show_config() {
-    local _mode="$1"
+    local _mode="$1" build_date
+    build_date="$(date --utc --iso-8601=seconds -d "@${SOURCE_DATE_EPOCH}")"
     _msg_info "${app_name} configuration settings"
     [[ ! -d "${command_name}" ]] && _msg_info "           Legacy Command:   ${command_name}"
     _msg_info "             Architecture:   ${arch}"
@@ -157,6 +158,7 @@ _show_config() {
     _msg_info "   Installation directory:   ${install_dir}"
     case "${_mode}" in
         build_profile)
+            _msg_info "               Build date:   ${build_date}"
             _msg_info "         Output directory:   ${out_dir}"
             _msg_info "                  GPG key:   ${gpg_key:-None}"
             _msg_info "                  Profile:   ${profile}"
@@ -597,9 +599,9 @@ _make_boot_uefi-x64.systemd-boot.eltorito() {
 # Build airootfs filesystem image
 _make_prepare() {
     if [[ "${sfs_mode}" == "sfs" ]]; then
-        _mkairootfs_sfs
+        _run_once _mkairootfs_sfs
     else
-        _mkairootfs_img
+        _run_once _mkairootfs_img
     fi
     _mkchecksum
     if [[ "${gpg_key}" ]]; then
@@ -783,12 +785,16 @@ command_build_profile() {
     isofs_dir="${work_dir}/iso"
     # Set ISO file name
     img_name="${iso_name}-${iso_version}-${arch}.iso"
-
-    _show_config "${FUNCNAME[0]#command_}"
-
     # Create working directory
     [[ -d "${work_dir}" ]] || install -d -- "${work_dir}"
+    # Write build date to file or if the file exists, read it from there
+    if [[ -e "${work_dir}/build_date" ]]; then
+        SOURCE_DATE_EPOCH="$(<"${work_dir}/build_date")"
+    else
+        printf '%s\n' "$SOURCE_DATE_EPOCH" > "${work_dir}/build_date"
+    fi
 
+    _show_config "${FUNCNAME[0]#command_}"
     _run_once _make_pacman_conf
     _run_once _export_gpg_publickey
     _run_once _make_custom_airootfs