add not-os nixpkgs related patches

pr-29.patch

@@ -0,0 +1,41 @@
+diff --git a/base.nix b/base.nix
+index 7eaee32..c1881cb 100644
+--- a/base.nix
++++ b/base.nix
+@@ -155,6 +155,23 @@ with lib;
+       # dummy to make setup-etc happy
+     '';
+     system.activationScripts.etc = stringAfter [ "users" "groups" ] config.system.build.etcActivationCommands;
++    # Re-apply deprecated var value due to systemd preference in recent nixpkgs
++    # See https://github.com/NixOS/nixpkgs/commit/59e37267556eb917146ca3110ab7c96905b9ffbd
++    system.activationScripts.var = lib.mkForce ''
++      # Various log/runtime directories.
++
++      mkdir -p /var/tmp
++      chmod 1777 /var/tmp
++
++      # Empty, immutable home directory of many system accounts.
++      mkdir -p /var/empty
++      # Make sure it's really empty
++      ${pkgs.e2fsprogs}/bin/chattr -f -i /var/empty || true
++      find /var/empty -mindepth 1 -delete
++      chmod 0555 /var/empty
++      chown root:root /var/empty
++      ${pkgs.e2fsprogs}/bin/chattr -f +i /var/empty || true
++    '';
+ 
+     # nix-build -A system.build.toplevel && du -h $(nix-store -qR result) --max=0 -BM|sort -n
+     system.build.toplevel = pkgs.runCommand "not-os" {
+diff --git a/systemd-compat.nix b/systemd-compat.nix
+index 11464c6..cb223b8 100644
+--- a/systemd-compat.nix
++++ b/systemd-compat.nix
+@@ -9,6 +9,8 @@ with lib;
+     };
+     systemd.user = mkOption {
+     };
++    systemd.tmpfiles = mkOption {
++    };
+   };
+   config = {
+   };