Running nixpkgs-update (https://github.com/NixOS/infra/blob/main/non-critical-infra/modules/nixpkgs-update/README.md) with UPDATE_INFO: cinnamon-session 6.6.4 -> 6.8.0 https://repology.org/project/cinnamon-session/versions
attrpath: cinnamon-session
Checking auto update branch...
No auto update branch exists
[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript
Diff after rewrites:
diff --git a/pkgs/by-name/ci/cinnamon-session/package.nix b/pkgs/by-name/ci/cinnamon-session/package.nix
index dbdaddc1cfc7..42c133e64c4b 100644
--- a/pkgs/by-name/ci/cinnamon-session/package.nix
+++ b/pkgs/by-name/ci/cinnamon-session/package.nix
@@ -39,13 +39,13 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "cinnamon-session";
-  version = "6.6.4";
+  version = "6.8.0";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = "cinnamon-session";
     tag = finalAttrs.version;
-    hash = "sha256-rx7+tBXQ9kvnRYNxgF1QXyhk9NamUIjti/6GGrACYU0=";
+    hash = "sha256-DAJpmnWRYSJNUQ6S5jxQM5IrnbdImVQ/CR5UAAOcQG4=";
   };
 
   buildInputs = [

Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A cinnamon-session
nix build failed.
Installing /build/source/data/hardware-compatibility to /nix/store/zc8ajgff9403j9g9iwfqjl6fi3gx3sbh-cinnamon-session-6.8.0/share/cinnamon-session
Installing /build/source/data/org.cinnamon.SessionManager.gschema.xml to /nix/store/zc8ajgff9403j9g9iwfqjl6fi3gx3sbh-cinnamon-session-6.8.0/share/glib-2.0/schemas
Installing /build/source/data/systemd/user/cinnamon-session.target to /nix/store/5j2w6s0j5jnjdb07qcgka29lblnrszrf-systemd-minimal-libs-262/lib/systemd/user
Traceback (most recent call last):
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/mesonmain.py", line 202, in run
    return options.run_func(options)
           ~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 908, in run
    installer.do_install(datafilename)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 576, in do_install
    self.install_data(d, dm, destdir, fullprefix)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 657, in install_data
    if self.do_copyfile(fullfilename, outfilename, makedirs=(dm, outdir), follow_symlinks=i.follow_symlinks):
       ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 437, in do_copyfile
    dirmaker.makedirs(outdir, exist_ok=True)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 111, in makedirs
    self.makedirs_impl(path, exist_ok=exist_ok)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/ngk0r7y1lcakcrkmx0nbflzd5dc7n5ha-meson-1.12.1/lib/python3.14/site-packages/mesonbuild/minstall.py", line 337, in makedirs
    os.makedirs(*args, **kwargs)
    ~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "<frozen os>", line 226, in makedirs
  File "<frozen os>", line 236, in makedirs
PermissionError: [Errno 13] Permission denied: '/nix/store/5j2w6s0j5jnjdb07qcgka29lblnrszrf-systemd-minimal-libs-262/lib/systemd'

ERROR: Unhandled python OSError. This is probably not a Meson bug, but an issue with your build environment.