storage: Allow systemd-boot only for package installations

The installer is not able to verify requirements of the selected bootloader with
other types of payload, like live images and rpmostree installations. Let's
allow systemd-boot only for package installations for now and deal with other
use cases later.

Related: rhbz#2234638

pyanaconda/modules/storage/bootloader/efi.py

@@ -225,6 +225,11 @@ def efi_config_file(self):
         """ Full path to EFI configuration file. """
         return join_paths(self.efi_config_dir, self._config_file)
 
+    def check(self):
+        """Verify the bootloader configuration."""
+        # Force the resolution order to run the systemd-boot check.
+        return SystemdBoot.check(self) and EFIBase.check(self)
+
     def write_config(self):
         """ Write the config settings to config file (ex: grub.cfg) not needed for systemd. """
         config_path = join_paths(conf.target.system_root, self.efi_config_file)

pyanaconda/modules/storage/bootloader/systemd.py

@@ -15,7 +15,8 @@
 # License and may only be used or replicated with the express permission of
 # Red Hat, Inc.
 #
-
+from pyanaconda.core.constants import PAYLOAD_TYPE_DNF
+from pyanaconda.modules.common.constants.services import PAYLOADS
 from pyanaconda.modules.storage.bootloader.base import BootLoader, BootLoaderError
 from pyanaconda.core import util
 from pyanaconda.core.configuration.anaconda import conf
@@ -75,6 +76,30 @@ def config_file(self):
         """ Full path to configuration file. """
         return "%s/%s" % (self.config_dir, self._config_file)
 
+
+    def check(self):
+        """Verify the bootloader configuration."""
+        if self._get_payload_type() != PAYLOAD_TYPE_DNF:
+            self.errors.append(_(
+                "Systemd-boot cannot be utilized with the current type of payload. "
+                "Choose an installation media that supports package installation."
+            ))
+            return False
+
+        return super().check()
+
+    @staticmethod
+    def _get_payload_type():
+        """Get the type of the active payload."""
+        payloads_proxy = PAYLOADS.get_proxy()
+        object_path = payloads_proxy.ActivePayload
+
+        if not object_path:
+            return None
+
+        object_proxy = PAYLOADS.get_proxy(object_path)
+        return object_proxy.Type
+
     # copy console update from grub2.py
     def write_config_console(self, config):
         log.info("systemd.py: write_config_console")
@@ -153,14 +178,5 @@ def install(self, args=None):
             raise BootLoaderError(_("bootctl failed to install UEFI boot loader. "
                                     "More information may be found in the log files stored in /tmp"))
 
-
     def write_config_images(self, config):
         return True
-
-    def is_valid_stage1_device(self, device, early=False):
-        valid = True
-        if conf.system.provides_liveuser:
-            raise BootLoaderError("systemd-boot cannot be utilized on live media with grub.")
-        else:
-            valid = super().is_valid_stage1_device(device, early)
-        return valid