diff --git a/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/__init__.py b/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/__init__.py
index 78b961b03e16..838b8913abb3 100644
--- a/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/__init__.py
+++ b/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/__init__.py
@@ -286,7 +286,6 @@ def reexec(
                 NIXOS_REBUILD_ATTR,
                 flake,
                 flake_build_flags | {"no_link": True},
-                quiet=True,
             )
         else:
             build_attr = BuildAttr.from_arg(args.attr, args.file)
@@ -294,7 +293,6 @@ def reexec(
                 NIXOS_REBUILD_ATTR,
                 build_attr,
                 build_flags | {"no_out_link": True},
-                quiet=True,
             )
     except CalledProcessError:
         logger.warning(
@@ -306,7 +304,7 @@ def reexec(
         new = drv / f"bin/{EXECUTABLE}"
         current = Path(argv[0])
         if new != current:
-            logging.debug(
+            logger.debug(
                 "detected newer version of script, re-exec'ing, current=%s, new=%s",
                 current,
                 new,
diff --git a/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/nix.py b/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/nix.py
index dc95b914b360..3be610b5ddbd 100644
--- a/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/nix.py
+++ b/pkgs/by-name/ni/nixos-rebuild-ng/src/nixos_rebuild/nix.py
@@ -51,7 +51,6 @@ def build(
     attr: str,
     build_attr: BuildAttr,
     build_flags: Args | None = None,
-    quiet: bool = False,
 ) -> Path:
     """Build NixOS attribute using classic Nix.
 
@@ -64,7 +63,7 @@ def build(
         build_attr.to_attr(attr),
         *dict_to_flags(build_flags),
     ]
-    r = run_wrapper(run_args, stdout=PIPE, stderr=PIPE if quiet else None)
+    r = run_wrapper(run_args, stdout=PIPE)
     return Path(r.stdout.strip())
 
 
@@ -72,7 +71,6 @@ def build_flake(
     attr: str,
     flake: Flake,
     flake_build_flags: Args | None = None,
-    quiet: bool = False,
 ) -> Path:
     """Build NixOS attribute using Flakes.
 
@@ -86,7 +84,7 @@ def build_flake(
         flake.to_attr(attr),
         *dict_to_flags(flake_build_flags),
     ]
-    r = run_wrapper(run_args, stdout=PIPE, stderr=PIPE if quiet else None)
+    r = run_wrapper(run_args, stdout=PIPE)
     return Path(r.stdout.strip())
 
 
diff --git a/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_main.py b/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_main.py
index 22b7054000a8..a66d70498c5f 100644
--- a/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_main.py
+++ b/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_main.py
@@ -143,7 +143,6 @@ def test_reexec(mock_build: Mock, mock_execve: Mock, monkeypatch: MonkeyPatch) -
                 nr.NIXOS_REBUILD_ATTR,
                 nr.models.BuildAttr(ANY, ANY),
                 {"build": True, "no_out_link": True},
-                quiet=True,
             )
         ]
     )
@@ -185,10 +184,9 @@ def test_reexec_flake(
 
     nr.reexec(argv, args, {"build": True}, {"flake": True})
     mock_build.assert_called_once_with(
-        "config.system.build.nixos-rebuild",
+        nr.NIXOS_REBUILD_ATTR,
         nr.models.Flake(ANY, ANY),
         {"flake": True, "no_link": True},
-        quiet=True,
     )
     # do not exec if there is no new version
     mock_execve.assert_not_called()
@@ -268,7 +266,6 @@ def test_execute_nix_boot(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             ),
             call(
@@ -343,7 +340,6 @@ def test_execute_nix_build_vm(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             )
         ]
@@ -408,7 +404,6 @@ def test_execute_nix_build_image_flake(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             ),
             call(
@@ -476,7 +471,6 @@ def test_execute_nix_switch_flake(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             ),
             call(
@@ -767,7 +761,6 @@ def test_execute_nix_switch_flake_target_host(
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             ),
             call(
@@ -1035,7 +1028,6 @@ def test_execute_build(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             )
         ]
@@ -1075,7 +1067,6 @@ def test_execute_test_flake(mock_run: Mock, tmp_path: Path) -> None:
                 ],
                 check=True,
                 stdout=PIPE,
-                stderr=None,
                 **DEFAULT_RUN_KWARGS,
             ),
             call(
diff --git a/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_nix.py b/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_nix.py
index 195f929aaf53..d87b6b62dca8 100644
--- a/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_nix.py
+++ b/pkgs/by-name/ni/nixos-rebuild-ng/src/tests/test_nix.py
@@ -36,18 +36,14 @@ def test_build(mock_run: Mock) -> None:
             "foo",
         ],
         stdout=PIPE,
-        stderr=None,
     )
 
     assert n.build(
-        "config.system.build.attr",
-        m.BuildAttr(Path("file"), "preAttr"),
-        quiet=True,
+        "config.system.build.attr", m.BuildAttr(Path("file"), "preAttr")
     ) == Path("/path/to/file")
     mock_run.assert_called_with(
         ["nix-build", Path("file"), "--attr", "preAttr.config.system.build.attr"],
         stdout=PIPE,
-        stderr=PIPE,
     )
 
 
@@ -78,26 +74,6 @@ def test_build_flake(mock_run: Mock, monkeypatch: MonkeyPatch, tmpdir: Path) ->
             "foo",
         ],
         stdout=PIPE,
-        stderr=None,
-    )
-
-    assert n.build_flake(
-        "config.system.build.toplevel",
-        flake,
-        None,
-        quiet=True,
-    ) == Path("/path/to/file")
-    mock_run.assert_called_with(
-        [
-            "nix",
-            "--extra-experimental-features",
-            "nix-command flakes",
-            "build",
-            "--print-out-paths",
-            '.#nixosConfigurations."hostname".config.system.build.toplevel',
-        ],
-        stdout=PIPE,
-        stderr=PIPE,
     )