first commit

flake.nix

@@ -0,0 +1,125 @@
+{
+  description = "St-Pierre - MCP Knowledge Server";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    (flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        st-pierre = pkgs.buildGoModule {
+          pname = "st-pierre";
+          version = "0.1.0";
+          src = ./.;
+          vendorHash = "sha256-pSBt5y3Mu8kYX9Vaq3jNU+k8748DLo/RGHV5PqiYelM=";
+        };
+      in
+      {
+        packages.default = st-pierre;
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [ go gopls gotools ];
+        };
+      }
+    )) // {
+      nixosModules.st-pierre = { config, pkgs, lib, ... }:
+        let
+          cfg = config.services.st-pierre;
+          st-pierre-pkg = self.packages.${pkgs.stdenv.hostPlatform.system}.default;
+        in
+        {
+          options.services.st-pierre = {
+            enable = lib.mkEnableOption "St-Pierre knowledge MCP server";
+
+            port = lib.mkOption {
+              type = lib.types.port;
+              default = 8080;
+              description = "HTTP port to listen on.";
+            };
+
+            qdrantUrl = lib.mkOption {
+              type = lib.types.str;
+              default = "localhost";
+              description = "Qdrant server hostname.";
+            };
+
+            qdrantPort = lib.mkOption {
+              type = lib.types.port;
+              default = 6334;
+              description = "Qdrant gRPC port.";
+            };
+
+            qdrantApiKeyFile = lib.mkOption {
+              type = lib.types.nullOr lib.types.path;
+              default = null;
+              description = "Path to a file containing the Qdrant API key.";
+            };
+
+            qdrantTls = lib.mkOption {
+              type = lib.types.bool;
+              default = false;
+              description = "Enable TLS for Qdrant connection.";
+            };
+
+            openaiApiKeyFile = lib.mkOption {
+              type = lib.types.path;
+              description = "Path to a file containing the API key (OpenAI or DeepSeek).";
+            };
+
+            embeddingBaseUrl = lib.mkOption {
+              type = lib.types.str;
+              default = "https://api.openai.com/v1";
+              description = "Base URL for the embeddings API.";
+            };
+
+            embeddingModel = lib.mkOption {
+              type = lib.types.str;
+              default = "text-embedding-3-small";
+              description = "Embedding model name.";
+            };
+
+            tokenFile = lib.mkOption {
+              type = lib.types.path;
+              description = "Path to a file containing the MCP Bearer token.";
+            };
+          };
+
+          config = lib.mkIf cfg.enable {
+            users.groups.st-pierre = { };
+
+            users.users.st-pierre = {
+              createHome = true;
+              isSystemUser = true;
+              home = "/var/lib/st-pierre";
+              group = "st-pierre";
+            };
+
+            systemd.services.st-pierre = {
+              wantedBy = [ "multi-user.target" ];
+              after = [ "network.target" ];
+
+              serviceConfig = {
+                User = "st-pierre";
+                Group = "st-pierre";
+                Restart = "always";
+                WorkingDirectory = "/var/lib/st-pierre";
+                ExecStart = "${st-pierre-pkg}/bin/st-pierre";
+                EnvironmentFile = [ cfg.openaiApiKeyFile cfg.tokenFile ]
+                  ++ lib.optional (cfg.qdrantApiKeyFile != null) cfg.qdrantApiKeyFile;
+              };
+
+              environment = {
+                PORT = builtins.toString cfg.port;
+                QDRANT_URL = cfg.qdrantUrl;
+                QDRANT_PORT = builtins.toString cfg.qdrantPort;
+                QDRANT_TLS = if cfg.qdrantTls then "true" else "false";
+                EMBEDDING_BASE_URL = cfg.embeddingBaseUrl;
+                EMBEDDING_MODEL = cfg.embeddingModel;
+              };
+            };
+          };
+        };
+    };
+}