anaconda/0002-backport-7e5f538ac2-copy-resolvconf.patch

diff -ru anaconda-40.21.orig/pyanaconda/core/configuration/system.py anaconda-40.21/pyanaconda/core/configuration/system.py
--- anaconda-40.21.orig/pyanaconda/core/configuration/system.py	2024-02-06 10:44:42.794561313 -0600
+++ anaconda-40.21/pyanaconda/core/configuration/system.py	2024-02-27 21:16:15.104704752 -0600
@@ -168,6 +168,11 @@
         return self._is_boot_iso or self._is_live_os or self._is_booted_os
 
     @property
+    def provides_resolver_config(self):
+        """Can we copy /etc/resolv.conf to the target system?"""
+        return self._is_boot_iso
+
+    @property
     def provides_liveuser(self):
         """Is the user `liveuser` available?"""
         return self._is_live_os
diff -ru anaconda-40.21.orig/pyanaconda/installation.py anaconda-40.21/pyanaconda/installation.py
--- anaconda-40.21.orig/pyanaconda/installation.py	2024-02-06 10:44:42.798561322 -0600
+++ anaconda-40.21/pyanaconda/installation.py	2024-02-27 21:15:11.002380768 -0600
@@ -28,6 +28,7 @@
 from pyanaconda import flags
 from pyanaconda.core import util
 from pyanaconda.core.path import open_with_perm
+from pyanaconda.core.service import is_service_installed
 from pyanaconda import network
 from pyanaconda.core.i18n import _
 from pyanaconda.core.threads import thread_manager
@@ -370,6 +371,17 @@
             _("Running pre-installation tasks")
         )
 
+        # Make name resolution work for rpm scripts in chroot.
+        # Also make sure dns resolution works in %post scripts
+        # when systemd-resolved is not available.
+        if conf.system.provides_resolver_config and \
+                not is_service_installed("systemd-resolved.service"):
+            pre_install.append(Task(
+                "Copy resolv.conf to sysroot",
+                network.copy_resolv_conf_to_root,
+                (conf.target.system_root, )
+            ))
+
         if is_module_available(SECURITY):
             security_proxy = SECURITY.get_proxy()
 
diff -ru anaconda-40.21.orig/pyanaconda/network.py anaconda-40.21/pyanaconda/network.py
--- anaconda-40.21.orig/pyanaconda/network.py	2024-02-06 10:44:42.830561405 -0600
+++ anaconda-40.21/pyanaconda/network.py	2024-02-27 21:17:34.122336801 -0600
@@ -16,8 +16,10 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import shutil
 import socket
 import itertools
+import os
 import time
 import threading
 import re
@@ -29,6 +31,7 @@
 from pyanaconda.core import util, constants
 from pyanaconda.core.i18n import _
 from pyanaconda.core.kernel import kernel_arguments
+from pyanaconda.core.path import make_directories
 from pyanaconda.core.regexes import HOSTNAME_PATTERN_WITHOUT_ANCHORS, \
     IPV6_ADDRESS_IN_DRACUT_IP_OPTION, MAC_OCTET
 from pyanaconda.core.configuration.anaconda import conf
@@ -53,8 +56,9 @@
 
 __all__ = ["get_supported_devices", "status_message", "wait_for_connectivity",
            "wait_for_connecting_NM_thread", "wait_for_network_devices", "wait_for_connected_NM",
-           "initialize_network", "prefix_to_netmask", "netmask_to_prefix", "get_first_ip_address",
-           "is_valid_hostname", "check_ip_address", "get_nm_client", "write_configuration"]
+           "initialize_network", "copy_resolv_conf_to_root", "prefix_to_netmask",
+           "netmask_to_prefix", "get_first_ip_address", "is_valid_hostname", "check_ip_address",
+           "get_nm_client", "write_configuration"]
 
 
 def get_nm_client():
@@ -214,6 +218,22 @@
     return route_info[route_info.index("dev") + 1]
 
 
+def copy_resolv_conf_to_root(root="/"):
+    """Copy resolv.conf to a system root."""
+    src = "/etc/resolv.conf"
+    dst = os.path.join(root, src.lstrip('/'))
+    if not os.path.isfile(src):
+        log.debug("%s does not exist", src)
+        return
+    if os.path.isfile(dst):
+        log.debug("%s already exists", dst)
+        return
+    dst_dir = os.path.dirname(dst)
+    if not os.path.isdir(dst_dir):
+        make_directories(dst_dir)
+    shutil.copyfile(src, dst)
+
+
 def run_network_initialization_task(task_path):
     """Run network initialization task and log the result."""
     task_proxy = NETWORK.get_proxy(task_path)