chore: separate backend from frontend

nix/package.nix

@@ -0,0 +1,53 @@
+{
+  pkgs,
+  rustPlatform,
+  ...
+}: let
+  cargoToml = builtins.fromTOML (builtins.readFile ../Cargo.toml);
+  name = cargoToml.package.name;
+  version = cargoToml.package.version;
+  rustBuild = rustPlatform.buildRustPackage {
+    pname = name;
+    inherit version;
+    src = ../.;
+    cargoLock.lockFile = ../Cargo.lock;
+  };
+  settingsDir = pkgs.runCommand "settings" {} ''
+    mkdir -p $out/settings
+    cp ${../settings}/*.yaml $out/settings/
+  '';
+  makeDockerImage = tag:
+    pkgs.dockerTools.buildLayeredImage {
+      name = "phundrak/${name}";
+      inherit tag;
+      created = "now";
+      config = {
+        Entrypoint = ["${rustBuild}/bin/${name}"];
+        WorkingDir = "/";
+        Env = [
+          "SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
+        ];
+        ExposedPorts = {
+          "3100/tcp" = {};
+        };
+        Labels = {
+          "org.opencontainers.image.title" = name;
+          "org.opencontainers.image.version" = version;
+          "org.opencontainers.image.description" = "REST API backend for phundrak.com";
+          "org.opencontainers.image.authors" = "Lucien Cartier-Tilet <lucien@phundrak.com>";
+          "org.opencontainers.image.licenses" = "AGPL-3.0-only";
+          "org.opencontainers.image.source" = "https://labs.phundrak.com/phundrak/phundrak.com";
+          "org.opencontainers.image.url" = "https://labs.phundrak.com/phundrak/phundrak.com";
+          "org.opencontainers.image.documentation" = "https://labs.phundrak.com/phundrak/phundrak.com";
+          "org.opencontainers.image.vendor" = "Phundrak";
+        };
+      };
+      contents = [rustBuild pkgs.cacert settingsDir];
+    };
+  dockerImageLatest = makeDockerImage "latest";
+  dockerImageVersioned = makeDockerImage version;
+in {
+  backend = rustBuild;
+  backendDocker = dockerImageVersioned;
+  backendDockerLatest = dockerImageLatest;
+}

nix/rust-version.nix

@@ -0,0 +1,11 @@
+{
+  rust-overlay,
+  inputs,
+  system,
+  ...
+}: let
+  overlays = [(import rust-overlay)];
+in rec {
+  pkgs = import inputs.nixpkgs {inherit system overlays;};
+  version = pkgs.rust-bin.stable.latest.default;
+}

nix/shell.nix

@@ -0,0 +1,66 @@
+{
+  inputs,
+  pkgs,
+  self,
+  rustVersion,
+  ...
+}:
+inputs.devenv.lib.mkShell {
+  inherit inputs pkgs;
+  modules = [
+    {
+      packages = with pkgs; [
+        (rustVersion.override {
+          extensions = [
+            "clippy"
+            "rust-src"
+            "rust-analyzer"
+            "rustfmt"
+          ];
+        })
+        bacon
+        cargo-deny
+        cargo-shuttle
+        cargo-tarpaulin
+        cargo-watch
+        flyctl
+        just
+        marksman
+        tombi # TOML lsp server
+      ];
+
+      services.mailpit = {
+        enable = true;
+        # HTTP interface for viewing emails
+        uiListenAddress = "127.0.0.1:8025";
+        # SMTP server for receiving emails
+        smtpListenAddress = "127.0.0.1:1025";
+      };
+
+      processes.run.exec = "cargo watch -x run";
+
+      enterShell = ''
+        echo "🦀 Rust backend development environment loaded!"
+        echo "📦 Rust version: $(rustc --version)"
+        echo "📦 Cargo version: $(cargo --version)"
+        echo ""
+        echo "Available tools:"
+        echo "  - rust-analyzer (LSP)"
+        echo "  - clippy (linter)"
+        echo "  - rustfmt (formatter)"
+        echo "  - bacon (continuous testing/linting)"
+        echo "  - cargo-deny (dependency checker)"
+        echo "  - cargo-tarpaulin (code coverage)"
+        echo ""
+        echo "📧 Mailpit service:"
+        echo "  - SMTP server: 127.0.0.1:1025"
+        echo "  - Web UI: http://127.0.0.1:8025"
+        echo ""
+        echo "🚀 Quick start:"
+        echo "  Run 'devenv up' to launch:"
+        echo "    - Mailpit service (email testing)"
+        echo "    - Backend with 'cargo watch -x run' (auto-reload)"
+      '';
+    }
+  ];
+}