Implement system-upgrade and arbitrary offline transactions

CMakeLists.txt

@@ -32,6 +32,7 @@ option(WITH_PYTHON_PLUGINS_LOADER "Build a special dnf5 plugin that loads Python
 option(WITH_COMPS "Build with comps groups and environments support" ON)
 option(WITH_MODULEMD "Build with modulemd modules support" ON)
 option(WITH_ZCHUNK "Build with zchunk delta compression support" ON)
+option(WITH_SYSTEMD "Build with systemd and D-Bus features" ON)
 option(ENABLE_SOLV_URPMREORDER "Build with support for URPM-like solution reordering?" OFF)
 
 # build options - documentation

dnf5-plugins/needs_restarting_plugin/needs_restarting.hpp

@@ -46,4 +46,4 @@ class NeedsRestartingCommand : public Command {
 
 }  // namespace dnf5
 
-#endif  // DNF5_COMMANDS_CHANGELOG_HPP
+#endif  // DNF5_COMMANDS_NEEDS_RESTARTING_HPP

dnf5.spec

@@ -62,6 +62,8 @@ Provides:       dnf5-command(advisory)
 Provides:       dnf5-command(clean)
 Provides:       dnf5-command(download)
 Provides:       dnf5-command(makecache)
+Provides:       dnf5-command(offline)
+Provides:       dnf5-command(system-upgrade)
 
 
 # ========== build options ==========
@@ -82,6 +84,7 @@ Provides:       dnf5-command(makecache)
 %else
 %bcond_without zchunk
 %endif
+%bcond_without systemd
 
 %bcond_with    html
 %if 0%{?rhel} == 8
@@ -161,6 +164,11 @@ BuildRequires:  pkgconfig(modulemd-2.0) >= %{libmodulemd_version}
 BuildRequires:  pkgconfig(zck) >= %{zchunk_version}
 %endif
 
+%if %{with systemd}
+BuildRequires:  pkgconfig(sdbus-c++) >= 0.8.1
+BuildRequires:  systemd-devel
+%endif
+
 %if %{with html} || %{with man}
 BuildRequires:  python3dist(breathe)
 BuildRequires:  python3dist(sphinx) >= 4.1.2
@@ -254,6 +262,8 @@ It supports RPM packages, modulemd modules, and comps groups & environments.
 %dir %{_datadir}/dnf5
 %dir %{_datadir}/dnf5/aliases.d
 %config %{_datadir}/dnf5/aliases.d/compatibility.conf
+%config %{_unitdir}/dnf5-offline-transaction.service
+%config %{_unitdir}/dnf5-offline-transaction-cleanup.service
 %dir %{_libdir}/dnf5
 %dir %{_libdir}/dnf5/plugins
 %dir %{_datadir}/dnf5/dnf5-plugins
@@ -744,6 +754,7 @@ automatically and regularly from systemd timers, cron jobs or similar.
     -DWITH_COMPS=%{?with_comps:ON}%{!?with_comps:OFF} \
     -DWITH_MODULEMD=%{?with_modulemd:ON}%{!?with_modulemd:OFF} \
     -DWITH_ZCHUNK=%{?with_zchunk:ON}%{!?with_zchunk:OFF} \
+    -DWITH_SYSTEMD=%{?with_systemd:ON}%{!?with_systemd:OFF} \
     \
     -DWITH_HTML=%{?with_html:ON}%{!?with_html:OFF} \
     -DWITH_MAN=%{?with_man:ON}%{!?with_man:OFF} \

dnf5/CMakeLists.txt

@@ -2,6 +2,8 @@ if(NOT WITH_DNF5)
     return()
 endif()
 
+set(SYSTEMD_SYSTEM_UNIT_DIR /usr/lib/systemd/system)
+
 find_package(Threads)
 
 # set gettext domain for translations
@@ -32,8 +34,15 @@ target_link_libraries(dnf5 PRIVATE common libdnf5 libdnf5-cli Threads::Threads)
 install(TARGETS dnf5 RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 
 pkg_check_modules(RPM REQUIRED rpm>=4.17.0)
-target_link_libraries(dnf5 PRIVATE ${RPM_LIBRARIES})
 
+if(WITH_SYSTEMD)
+  pkg_check_modules(SDBUS_CPP REQUIRED sdbus-c++)
+  pkg_check_modules(LIBSYSTEMD REQUIRED libsystemd)
+  add_definitions(-DWITH_SYSTEMD)
+  target_link_libraries(dnf5 PRIVATE ${RPM_LIBRARIES} ${SDBUS_CPP_LIBRARIES} ${LIBSYSTEMD_LIBRARIES})
+else()
+  target_link_libraries(dnf5 PRIVATE ${RPM_LIBRARIES})
+endif()
 
 find_package(bash-completion)
 if(BASH_COMPLETION_FOUND)
@@ -47,6 +56,11 @@ install(FILES bash-completion/dnf5 DESTINATION ${BASH_COMPLETION_COMPLETIONSDIR}
 install(FILES "README.plugins" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/dnf5/plugins" RENAME "README")
 install(DIRECTORY "config/usr/" DESTINATION "${CMAKE_INSTALL_PREFIX}" PATTERN ".gitkeep" EXCLUDE)
 install(DIRECTORY "config/etc/" DESTINATION "${CMAKE_INSTALL_FULL_SYSCONFDIR}" PATTERN ".gitkeep" EXCLUDE)
+install(DIRECTORY "config/systemd/system/" DESTINATION "${SYSTEMD_SYSTEM_UNIT_DIR}" PATTERN ".gitkeep" EXCLUDE)
+install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink
+    ${SYSTEMD_SYSTEM_UNIT_DIR}/dnf5-offline-transaction.service
+    ${SYSTEMD_SYSTEM_UNIT_DIR}/system-update.target.wants/dnf5-offline-transaction.service)"
+)
 
 # Makes an empty directory for dnf5-plugins configuration files
 install(DIRECTORY DESTINATION "${CMAKE_INSTALL_FULL_SYSCONFDIR}/dnf/dnf5-plugins")

dnf5/commands/autoremove/autoremove.cpp

@@ -19,6 +19,7 @@ along with libdnf.  If not, see <https://www.gnu.org/licenses/>.
 
 #include "autoremove.hpp"
 
+#include <dnf5/shared_options.hpp>
 #include <libdnf5/rpm/package_query.hpp>
 
 namespace dnf5 {
@@ -35,6 +36,7 @@ void AutoremoveCommand::set_parent_command() {
 void AutoremoveCommand::set_argument_parser() {
     get_argument_parser_command()->set_description(
         "Remove all unneeded packages originally installed as dependencies.");
+    create_offline_option(*this);
 }
 
 void AutoremoveCommand::configure() {

dnf5/commands/distro-sync/distro-sync.cpp

@@ -52,6 +52,7 @@ void DistroSyncCommand::set_argument_parser() {
     allow_erasing = std::make_unique<AllowErasingOption>(*this);
     auto skip_unavailable = std::make_unique<SkipUnavailableOption>(*this);
     auto skip_broken = std::make_unique<SkipBrokenOption>(*this);
+    create_offline_option(*this);
 }
 
 void DistroSyncCommand::configure() {

dnf5/commands/downgrade/downgrade.cpp

@@ -56,6 +56,7 @@ void DowngradeCommand::set_argument_parser() {
     auto skip_unavailable = std::make_unique<SkipUnavailableOption>(*this);
     auto skip_broken = std::make_unique<SkipBrokenOption>(*this);
     create_allow_downgrade_options(*this);
+    create_offline_option(*this);
 }
 
 void DowngradeCommand::configure() {

dnf5/commands/group/group_install.cpp

@@ -44,6 +44,7 @@ void GroupInstallCommand::set_argument_parser() {
     auto skip_broken = std::make_unique<SkipBrokenOption>(*this);
     create_allow_downgrade_options(*this);
     create_downloadonly_option(*this);
+    create_offline_option(*this);
 }
 
 void GroupInstallCommand::configure() {

dnf5/commands/group/group_remove.cpp

@@ -19,6 +19,7 @@ along with libdnf.  If not, see <https://www.gnu.org/licenses/>.
 
 #include "group_remove.hpp"
 
+#include <dnf5/shared_options.hpp>
 #include <libdnf5/comps/comps.hpp>
 #include <libdnf5/comps/group/group.hpp>
 #include <libdnf5/comps/group/query.hpp>
@@ -36,6 +37,7 @@ void GroupRemoveCommand::set_argument_parser() {
 
     no_packages = std::make_unique<GroupNoPackagesOption>(*this);
     group_specs = std::make_unique<GroupSpecArguments>(*this, ArgumentParser::PositionalArg::AT_LEAST_ONE);
+    create_offline_option(*this);
 }
 
 void GroupRemoveCommand::configure() {

dnf5/commands/group/group_upgrade.cpp

@@ -40,6 +40,7 @@ void GroupUpgradeCommand::set_argument_parser() {
     allow_erasing = std::make_unique<AllowErasingOption>(*this);
     auto skip_unavailable = std::make_unique<SkipUnavailableOption>(*this);
     create_allow_downgrade_options(*this);
+    create_offline_option(*this);
 }
 
 void GroupUpgradeCommand::configure() {

dnf5/commands/install/install.cpp

@@ -67,6 +67,7 @@ void InstallCommand::set_argument_parser() {
     auto skip_unavailable = std::make_unique<SkipUnavailableOption>(*this);
     auto skip_broken = std::make_unique<SkipBrokenOption>(*this);
     create_allow_downgrade_options(*this);
+    create_offline_option(*this);
 }
 
 void InstallCommand::configure() {