bump syncstorage-rs to unstable, remove nixos-25.05 pkgs

flake.lock

@@ -371,22 +371,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_25-05": {
-      "locked": {
-        "lastModified": 1767313136,
-        "narHash": "sha256-16KkgfdYqjaeRGBaYsNrhPRRENs0qzkQVUooNHtoy2w=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "ac62194c3917d5f474c1a844b6fd6da2db95077d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-25.05",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "pre-commit": {
       "inputs": {
         "flake-compat": "flake-compat_2",
@@ -420,7 +404,6 @@
         "lanzaboote": "lanzaboote",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
-        "nixpkgs_25-05": "nixpkgs_25-05",
         "simple-nixos-mailserver": "simple-nixos-mailserver",
         "vscode-extensions": "vscode-extensions"
       }

flake.nix

@@ -1,7 +1,6 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    nixpkgs_25-05.url = "github:NixOS/nixpkgs/nixos-25.05";
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
     colmena = {
       url = "github:zhaofengli/colmena";
@@ -43,7 +42,6 @@
       home-manager,
       lanzaboote,
       nixos-hardware,
-      nixpkgs_25-05,
       nixpkgs,
       simple-nixos-mailserver,
       vscode-extensions,
@@ -53,14 +51,12 @@
       var = import ./var { inherit lib; };
       lib' = import ./lib.nix { inherit lib var; };
 
-      pkgs_25-05 = import nixpkgs_25-05 { system = "x86_64-linux"; };
       mypkgs = self.packages.x86_64-linux;
 
       specialArgs = rec {
         inherit
           inputs
           lib'
-          pkgs_25-05
           mypkgs
           var
           ;

host/roam/firefox-sync.nix

@@ -18,7 +18,7 @@
 
   services.firefox-syncserver = {
     enable = true;
-    package = pkgs_25-05.syncstorage-rs;
+    package = pkgs.syncstorage-rs;
     secrets = config.age.secrets.roam-firefox-sync-secret.path;
     singleNode = {
       enable = true;