borgbackup: use python3Packages instead of python3.pkgs to fix cross compilation

See also: Package sets within derivations (i.e. python3.pkgs) are not spliced
          https://github.com/NixOS/nixpkgs/issues/211340

pkgs/tools/backup/borgbackup/default.nix

@@ -6,7 +6,7 @@
 , lz4
 , openssh
 , openssl
-, python3
+, python3Packages
 , xxHash
 , zstd
 , installShellFiles
@@ -14,7 +14,7 @@
 , fetchPypi
 }:
 
-python3.pkgs.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "borgbackup";
   version = "1.2.4";
   format = "pyproject";
@@ -30,7 +30,7 @@ python3.pkgs.buildPythonApplication rec {
       --replace "0o4755" "0o0755"
   '';
 
-  nativeBuildInputs = with python3.pkgs; [
+  nativeBuildInputs = with python3Packages; [
     cython
     setuptools-scm
     pkgconfig
@@ -55,7 +55,7 @@ python3.pkgs.buildPythonApplication rec {
     acl
   ];
 
-  propagatedBuildInputs = with python3.pkgs; [
+  propagatedBuildInputs = with python3Packages; [
     msgpack
     packaging
     (if stdenv.isLinux then pyfuse3 else llfuse)
@@ -72,7 +72,7 @@ python3.pkgs.buildPythonApplication rec {
       --zsh scripts/shell_completions/zsh/_borg
   '';
 
-  nativeCheckInputs = with python3.pkgs; [
+  nativeCheckInputs = with python3Packages; [
     e2fsprogs
     py
     python-dateutil