nixpkgs: 2023-12-16 -> 2023-12-17

```
• Updated input 'nixpkgs-next-unpatched':
    'github:nixos/nixpkgs/029c707186e2b00f9e98f590b9a019320ccc21d7' (2023-12-16)
  → 'github:nixos/nixpkgs/ec02adf37f19c5dcd891ebf9f175ebb1c4fba80a' (2023-12-17)
• Updated input 'nixpkgs-unpatched':
    'github:nixos/nixpkgs/ceb8e4efd95627c0a86f106ba2afcd207ad5c6b3' (2023-12-16)
  → 'github:nixos/nixpkgs/91a00709aebb3602f172a0bf47ba1ef013e34835' (2023-12-17)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/d806e546f96c88cd9f7d91c1c19ebc99ba6277d9' (2023-12-10)
  → 'github:Mic92/sops-nix/21f2b8f123a1601fef3cf6bbbdf5171257290a77' (2023-12-17)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/b8f33c044e51de6dde3ad80a9676945e0e4e3227' (2023-12-09)
  → 'github:NixOS/nixpkgs/a19a71d1ee93226fd71984359552affbc1cd3dc3' (2023-12-17)
```

flake.lock

@@ -37,11 +37,11 @@
     },
     "nixpkgs-next-unpatched": {
       "locked": {
-        "lastModified": 1702728084,
-        "narHash": "sha256-4zxKpiO4rdJZLyGvavMG21hl+MLdsqZemdS6P1BGunM=",
+        "lastModified": 1702814478,
+        "narHash": "sha256-RSJu6QIPpFXScS//TwlJMkuprJVpEjfNGna/w6NbZVI=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "029c707186e2b00f9e98f590b9a019320ccc21d7",
+        "rev": "ec02adf37f19c5dcd891ebf9f175ebb1c4fba80a",
         "type": "github"
       },
       "original": {
@@ -53,11 +53,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1702148972,
-        "narHash": "sha256-h2jODFP6n+ABrUWcGRSVPRFfLOkM9TJ2pO+h+9JcaL0=",
+        "lastModified": 1702777222,
+        "narHash": "sha256-/SYmqgxTYzqZnQEfbOCHCN4GzqB9uAIsR9IWLzo0/8I=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b8f33c044e51de6dde3ad80a9676945e0e4e3227",
+        "rev": "a19a71d1ee93226fd71984359552affbc1cd3dc3",
         "type": "github"
       },
       "original": {
@@ -69,11 +69,11 @@
     },
     "nixpkgs-unpatched": {
       "locked": {
-        "lastModified": 1702729935,
-        "narHash": "sha256-lHko1304tQGNzeGRKgrrU3VDTO/NVr7GP0y90wLdaL4=",
+        "lastModified": 1702830618,
+        "narHash": "sha256-lvhwIvRwhOLgzbRuYkqHy4M5cQHYs4ktL6/hyuBS6II=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ceb8e4efd95627c0a86f106ba2afcd207ad5c6b3",
+        "rev": "91a00709aebb3602f172a0bf47ba1ef013e34835",
         "type": "github"
       },
       "original": {
@@ -100,11 +100,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1702177193,
-        "narHash": "sha256-J2409SyXROoUHYXVy9h4Pj0VU8ReLuy/mzBc9iK4DBg=",
+        "lastModified": 1702812162,
+        "narHash": "sha256-18cKptpAAfkatdQgjO5SZXZsbc1IVPRoYx2AxaiooL4=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "d806e546f96c88cd9f7d91c1c19ebc99ba6277d9",
+        "rev": "21f2b8f123a1601fef3cf6bbbdf5171257290a77",
         "type": "github"
       },
       "original": {

overlays/cross.nix

@@ -420,6 +420,10 @@ in with final; {
   #   inherit (emulated) stdenv;
   # };
 
+  # fixes: "sphinx-build: cannot execute binary file: Exec format error"
+  # fix is in PR: <https://github.com/NixOS/nixpkgs/pull/275078>
+  btrfs-progs = prev.btrfs-progs.override { python3 = buildPackages.python3; };
+
   # 2023/10/23: upstreaming blocked by gvfs, webkitgtk 4.1
   # fixes: "error: Package <foo> not found in specified Vala API directories or GObject-Introspection GIR directories"
   # needs binfmt for docs: "scangobj.py:execute_command:1293:WARNING:Running scanner failed: [Errno 8] Exec format error: './calls-scan', command: ./calls-scan"

overlays/preferences.nix

@@ -54,11 +54,12 @@
   # ];
 
   sway-unwrapped = super.sway-unwrapped.override {
-    wlroots = wlroots.overrideAttrs (upstream: {
+    wlroots_0_16 = wlroots_0_16.overrideAttrs (upstream: {
       # 2023/09/08: fix so clicking a notification can activate the corresponding window.
       # - test: run dino, receive a message while tabbed away, click the desktop notification.
       #   - if sway activates the dino window (i.e. colors the workspace and tab), then all good
       #   - do all of this with only a touchscreen (e.g. on mobile phone) -- NOT a mouse/pointer
+      # 2023/12/17: this patch is still necessary
       ## what this patch does:
       # - allows any wayland window to request activation, at any time.
       # - traditionally, wayland only allows windows to request activation if