epm full-upgrade: implement --dry-run (--just-print) support

bin/epm-clean

@@ -42,11 +42,11 @@ epm_clean()
 
 case $PMTYPE in
     apt-rpm)
-        sudocmd apt-get clean
+        sudocmd apt-get clean $dryrun
         [ -n "$force" ] && __remove_alt_apt_cache_file
         ;;
     apt-dpkg)
-        sudocmd apt-get clean
+        sudocmd apt-get clean $dryrun
         [ -n "$force" ] && __remove_deb_apt_cache_file
         ;;
     aptitude-dpkg)

bin/epm-full_upgrade

@@ -57,11 +57,11 @@ epm_full_upgrade()
     docmd epm update || fatal "repository updating is failed."
 
     [ -n "$quiet" ] || echo
-    docmd epm upgrade || fatal "upgrading of the system is failed."
+    docmd epm $dryrun upgrade || fatal "upgrading of the system is failed."
 
     if [ -z "$full_upgrade_no_kernel_update" ] ; then
         [ -n "$quiet" ] || echo
-        docmd epm update-kernel || fatal "updating of the kernel is failed."
+        docmd epm $dryrun update-kernel || fatal "updating of the kernel is failed."
     fi
 
     # disable epm play --update for non ALT Systems
@@ -69,23 +69,23 @@ epm_full_upgrade()
 
     if [ -z "$full_upgrade_no_epm_play" ] ; then
         [ -n "$quiet" ] || echo
-        docmd epm play --update all || fatal "updating of applications installed via epm play is failed."
+        docmd epm $dryrun play --update all || fatal "updating of applications installed via epm play is failed."
     fi
 
     if [ -z "$full_upgrade_no_flatpack" ] ; then
         if is_command flatpak ; then
             [ -n "$quiet" ] || echo
-            docmd flatpak update
+            docmd flatpak update $(subst_option non_interactive --assume-yes) $(subst_option dryrun --no-deploy)
         fi
     fi
 
     if [ -z "$full_upgrade_no_snap" ] ; then
         if is_command snap && serv snapd exists && serv snapd status >/dev/null ; then
             [ -n "$quiet" ] || echo
-            sudocmd snap refresh
+            sudocmd snap refresh $(subst_option dryrun --list)
         fi
     fi
 
     [ -n "$quiet" ] || echo
-    docmd epm clean
+    docmd epm $dryrun clean
 }

bin/epm-play

@@ -151,6 +151,8 @@ __epm_play_run()
     # keep EPM_AUTO for non epm code (epm uses EPM_OPTIONS now)
     [ -n "$non_interactive" ] && export EPM_AUTO="--auto"
 
+    export EPM_OPTIONS="$EPM_OPTIONS $dryrun"
+
     local bashopt=''
     [ -n "$verbose" ] && bashopt='-x'
     #info "Running $($script --description 2>/dev/null) ..."
@@ -414,6 +416,7 @@ case "$1" in
         local list
         if [ "$1" = "all" ] ; then
             shift
+            info "Retrieving list of installed apps ..."
             list="$(__list_installed_app)"
         else
             list="$*"
@@ -436,6 +439,7 @@ case "$1" in
         local list
         if [ "$1" = "all" ] ; then
             shift
+            info "Retrieving list of installed apps ..."
             list="$(__list_installed_app)"
         else
             list="$*"

bin/epm-upgrade

@@ -98,7 +98,7 @@ epm_upgrade()
 
     case $PMTYPE in
     apt-rpm|apt-dpkg)
-        local APTOPTIONS="$(subst_option non_interactive -y) $(subst_option verbose "-V -o Debug::pkgMarkInstall=1 -o Debug::pkgProblemResolver=1")"
+        local APTOPTIONS="$dryrun $(subst_option non_interactive -y) $(subst_option verbose "-V -o Debug::pkgMarkInstall=1 -o Debug::pkgProblemResolver=1")"
         CMD="apt-get $APTOPTIONS $noremove $force_yes dist-upgrade"
         ;;
     aptitude-dpkg)