Nix, update nixpkgs and add systemd service support

flake.lock

@@ -2,16 +2,18 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1735563628,
+        "lastModified": 1752436162,
-        "narHash": "sha256-OnSAY7XDSx7CtDoqNh8jwVwh4xNL/2HaJxGjryLWzX8=",
+        "narHash": "sha256-Kt1UIPi7kZqkSc5HVj6UY5YLHHEzPBkgpNUByuyxtlw=",
-        "rev": "b134951a4c9f3c995fd7be05f3243f8ecd65d798",
+        "owner": "NixOS",
-        "revCount": 637546,
+        "repo": "nixpkgs",
-        "type": "tarball",
+        "rev": "dfcd5b901dbab46c9c6e80b265648481aafb01f8",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2405.637546%2Brev-b134951a4c9f3c995fd7be05f3243f8ecd65d798/01941dc2-2ab2-7453-8ebd-88712e28efae/source.tar.gz"
+        "type": "github"
       },
       "original": {
-        "type": "tarball",
+        "owner": "NixOS",
-        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.2405.%2A.tar.gz"
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs_2": {
@@ -41,11 +43,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1749695868,
+        "lastModified": 1752547600,
-        "narHash": "sha256-debjTLOyqqsYOUuUGQsAHskFXH5+Kx2t3dOo/FCoNRA=",
+        "narHash": "sha256-0vUE42ji4mcCvQO8CI0Oy8LmC6u2G4qpYldZbZ26MLc=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "55f914d5228b5c8120e9e0f9698ed5b7214d09cd",
+        "rev": "9127ca1f5a785b23a2fc1c74551a27d3e8b9a28b",
         "type": "github"
       },
       "original": {

flake.nix

@@ -3,13 +3,15 @@
 
   # Flake inputs
   inputs = {
-    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.2405.*.tar.gz";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     rust-overlay.url = "github:oxalica/rust-overlay"; # A helper for Rust + Nix
   };
 
   # Flake outputs
   outputs = { self, nixpkgs, rust-overlay }:
     let
+      pdsDirectory = "/home/pan/prog/atproto/appview";
+      
       # Overlays enable you to customize the Nixpkgs attribute set
       overlays = [
         # Makes a `rust-bin` attribute available in Nixpkgs
@@ -33,10 +35,71 @@
       forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
         pkgs = import nixpkgs { inherit overlays system; };
       });
+
+      # Systemd service configuration
+      createSystemdService = pkgs: pdsDir: pkgs.writeTextFile {
+        name = "pds.service";
+        text = ''
+          [Unit]
+          Description=Development Environment Service
+          After=network-online.target
+          Wants=network-online.target
+
+          [Service]
+          Type=simple
+          ExecStart=${pkgs.pds}/bin/pds
+          WorkingDirectory=${pdsDir}
+          EnvironmentFile=${pdsDir}/.env
+          Environment=PDS_DATA_DIRECTORY=${pdsDir}/.pds-data
+          Environment=PDS_BLOBSTORE_DISK_LOCATION=${pdsDir}/.pds-data/blocks
+        '';
+      };
+
+      # Scripts for managing the systemd service
+      createServiceScripts = pkgs: pdsDir: 
+        let
+          serviceFile = createSystemdService pkgs pdsDir;
+          serviceName = "pds";
+        in {
+          startScript = pkgs.writeShellScript "start-dev-service" ''
+            set -e
+
+            # Create user systemd directory if it doesn't exist
+            mkdir -p ~/.config/systemd/user
+
+            # Copy service file
+            cp -f ${serviceFile} ~/.config/systemd/user/${serviceName}.service
+
+            # Reload systemd and start service
+            systemctl --user daemon-reload
+            systemctl --user start ${serviceName}
+            systemctl --user enable ${serviceName}
+
+            systemctl --user status ${serviceName} --no-pager
+          '';
+
+          stopScript = pkgs.writeShellScript "stop-dev-service" ''
+            set -e
+            if systemctl --user is-enabled --quiet ${serviceName}; then
+              # Stop and disable service
+              systemctl --user stop ${serviceName} || true
+              systemctl --user disable ${serviceName} || true
+
+              # Remove service file
+              rm -f ~/.config/systemd/user/${serviceName}.service
+
+              # Reload systemd
+              systemctl --user daemon-reload
+            fi
+          '';
+        };
     in
     {
       # Development environment output
-      devShells = forAllSystems ({ pkgs }: {
+      devShells = forAllSystems ({ pkgs }:
+        let
+          scripts = createServiceScripts pkgs pdsDirectory;
+        in {
           default = pkgs.mkShell {
             # The Nix packages provided in the environment
             packages = (with pkgs; [
@@ -45,6 +108,14 @@
               sqlx-cli
               rustToolchain
             ]) ++ pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs; [ libiconv ]);
+
+            shellHook = pkgs.lib.optionalString pkgs.stdenv.isLinux ''
+              # Cleanup
+              ${scripts.stopScript}
+
+              # Start the systemd service
+              ${scripts.startScript}
+            '';
           };
         });
     };