hmm

packages/system/nebula-ui/default.nix

@@ -0,0 +1,52 @@
+{
+  lib,
+  python3,
+  nebula,
+  runCommand,
+  writeShellApplication,
+  ...
+}:
+
+let
+  pythonEnv = python3.withPackages (
+    ps: with ps; [
+      fastapi
+      uvicorn
+      httpx
+      qrcode
+      pillow # qrcode SVG path image factory dependency
+      jinja2
+      python-multipart # needed for FastAPI Form() parsing
+    ]
+  );
+
+  # Install the app source as a proper Python package so uvicorn can import it.
+  appPkg = runCommand "nebula-ui-app" { } ''
+    pkgdir=$out/lib/python${python3.pythonVersion}/site-packages/nebula_ui
+    mkdir -p "$pkgdir"
+    cp ${./app.py} "$pkgdir/__init__.py"
+    cp -r ${./templates} "$pkgdir/templates"
+  '';
+in
+writeShellApplication {
+  name = "nebula-ui";
+
+  runtimeInputs = [
+    pythonEnv
+    nebula # provides nebula-cert on PATH
+  ];
+
+  text = ''
+    export PYTHONPATH="${appPkg}/lib/python${python3.pythonVersion}/site-packages''${PYTHONPATH:+:$PYTHONPATH}"
+    exec uvicorn nebula_ui:app \
+      --host "''${NEBULA_UI_LISTEN_HOST:-127.0.0.1}" \
+      --port "''${NEBULA_UI_LISTEN_PORT:-8473}"
+  '';
+
+  meta = {
+    description = "Web UI for managing a Nebula overlay network — stats, cert signing, QR codes";
+    mainProgram = "nebula-ui";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.linux;
+  };
+}