flake: apply not-os patches

flake.nix

@@ -9,19 +9,13 @@
     let
       pkgs = import nixpkgs { system = "x86_64-linux"; };
 
-      patched-not-os = let
-        remote-patches = [
-          {
-            # Zynq image various fixes and cleanup
-            url = "https://patch-diff.githubusercontent.com/raw/cleverca22/not-os/pull/28.patch";
-            sha256 = "sha256-EnYb95QfwHmUHfbCT9tL291mC8Tze0Koadb11arvTDY=";
-          }
-        ];
-        local-patches = [ ./not-os.patch ];
-      in pkgs.applyPatches {
+      patched-not-os = pkgs.applyPatches {
         name = "not-os-patched";
         src = not-os;
-        patches = map pkgs.fetchpatch remote-patches ++ local-patches;
+        patches = [
+          ./pr-28.patch
+          ./pr-29.patch
+        ];
       };
 
       gnu-platform = "arm-none-eabi";

not-os.patch

@@ -1,28 +0,0 @@
-diff --git a/base.nix b/base.nix
-index 7eaee32..b5a61ee 100644
---- a/base.nix
-+++ b/base.nix
-@@ -155,7 +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" {
-       activationScript = config.system.activationScripts.script;