{
  lib,
  python3Packages,
  fetchFromGitHub,
  fetchPypi,
}:

let
  # ── OpenTelemetry Python monorepo (api, sdk, proto, exporter-otlp-*) ──
  otelPythonSrc = fetchFromGitHub {
    owner = "open-telemetry";
    repo = "opentelemetry-python";
    rev = "v1.39.1";
    hash = "sha256-GEcGADUdci6W2vfeXt/rjQOL/7r4RBxgyq+vy6tivBc=";
  };

  # ── OpenTelemetry Contrib monorepo (instrumentation-*, util-http) ──
  otelContribSrc = fetchFromGitHub {
    owner = "open-telemetry";
    repo = "opentelemetry-python-contrib";
    rev = "v0.60b1";
    hash = "sha256-IDTSGsHQ8cCFvgSO7pDbSSHVNV0OIjjoEN9ZfkaPAvk=";
  };

  # ── Tier 1: leaf packages ──

  pythonvcard4 = python3Packages.buildPythonPackage rec {
    pname = "pythonvcard4";
    version = "0.2.0";
    pyproject = true;
    build-system = [ python3Packages.setuptools python3Packages.wheel ];
    src = fetchPypi { inherit pname version; hash = "sha256-I2u6J2nkWWRc+ndkB/8HhWrO1FtDcRa/QN2zm7zv220="; };
    doCheck = false;
    meta = with lib; { description = "vCard parsing library"; homepage = "https://github.com/GNOME/python-vcard4"; license = licenses.gpl3Plus; };
  };

  prometheus-client = python3Packages.buildPythonPackage rec {
    pname = "prometheus_client";
    version = "0.25.0";
    pyproject = true;
    build-system = [ python3Packages.setuptools python3Packages.wheel ];
    src = fetchPypi { inherit pname version; hash = "sha256-Xjc7dcMa+zyG8aUvoa1HDJqs4YCC057A0vkY0RzJuig="; };
    doCheck = false;
    meta = with lib; { description = "Prometheus monitoring system client"; homepage = "https://github.com/prometheus/client_python"; license = licenses.asl20; };
  };

  python-json-logger = python3Packages.buildPythonPackage rec {
    pname = "python-json-logger";
    version = "4.1.0";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = fetchFromGitHub {
      owner = "nhairs";
      repo = "python-json-logger";
      rev = "v${version}";
      hash = "sha256-hJ29rDP04apLf1zaP1vQrYF5xm4GtKZlvno97b7g+hg=";
    };
    doCheck = false;
    meta = with lib; { description = "JSON formatter for python logging"; homepage = "https://github.com/nhairs/python-json-logger"; license = licenses.bsd2; };
  };

  importlib-metadata = python3Packages.buildPythonPackage rec {
    pname = "importlib_metadata";
    version = "8.7.1";
    pyproject = true;
    build-system = [ python3Packages.setuptools python3Packages.wheel ];
    src = fetchPypi { inherit pname version; hash = "sha256-Sf7xrmRAwYIFL0B8jTSmj3Lvw225ypDcARM5jy/d6Ls="; };
    propagatedBuildInputs = with python3Packages; [ zipp ];
    doCheck = false;
    meta = with lib; { description = "Read metadata from Python packages"; homepage = "https://github.com/python/importlib_metadata"; license = licenses.asl20; };
  };

  googleapis-common-protos = python3Packages.buildPythonPackage rec {
    pname = "googleapis-common-protos";
    version = "1.75.0";
    pyproject = true;
    build-system = [ python3Packages.setuptools python3Packages.wheel ];
    src = fetchFromGitHub {
      owner = "googleapis";
      repo = "python-api-common-protos";
      rev = "v${version}";
      hash = lib.fakeHash;
    };
    propagatedBuildInputs = with python3Packages; [ protobuf ];
    doCheck = false;
    meta = with lib; { description = "Common protobufs used in Google APIs"; homepage = "https://github.com/googleapis/python-api-common-protos"; license = licenses.asl20; };
  };

  opentelemetry-api = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-api";
    version = "1.39.1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelPythonSrc;
    sourceRoot = "${src.name}/opentelemetry-api";
    propagatedBuildInputs = with python3Packages; [ deprecated importlib-metadata ];
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry Python API"; homepage = "https://github.com/open-telemetry/opentelemetry-python"; license = licenses.asl20; };
  };

  opentelemetry-proto = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-proto";
    version = "1.39.1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelPythonSrc;
    sourceRoot = "${src.name}/opentelemetry-proto";
    propagatedBuildInputs = with python3Packages; [ protobuf ];
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry Python Proto"; homepage = "https://github.com/open-telemetry/opentelemetry-python"; license = licenses.asl20; };
  };

  # ── Tier 2 ──

  opentelemetry-semantic-conventions = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-semantic-conventions";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = fetchFromGitHub {
      owner = "open-telemetry";
      repo = "semantic-conventions";
      rev = "v${version}";
      hash = lib.fakeHash;
    };
    sourceRoot = "${src.name}/model";
    propagatedBuildInputs = [ opentelemetry-api ] ++ (with python3Packages; [ deprecated ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry Semantic Conventions"; homepage = "https://github.com/open-telemetry/semantic-conventions"; license = licenses.asl20; };
  };

  opentelemetry-sdk = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-sdk";
    version = "1.39.1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelPythonSrc;
    sourceRoot = "${src.name}/opentelemetry-sdk";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-semantic-conventions ] ++ (with python3Packages; [ typing-extensions ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry Python SDK"; homepage = "https://github.com/open-telemetry/opentelemetry-python"; license = licenses.asl20; };
  };

  x-wr-timezone = python3Packages.buildPythonPackage rec {
    pname = "x_wr_timezone";
    version = "2.0.1";
    pyproject = true;
    build-system = [ python3Packages.setuptools python3Packages.wheel ];
    src = fetchPypi { inherit pname version; hash = "sha256-kWbEDm/9TA7eurw1ThoeLP/Bu0c/iAB2lHk3V2hcyMM="; };
    propagatedBuildInputs = with python3Packages; [ icalendar ];
    doCheck = false;
    meta = with lib; { description = "X-WR-TIMEZONE iCalendar property handling"; homepage = "https://github.com/niccokunzmann/x-wr-timezone"; license = licenses.lgpl3Plus; };
  };

  opentelemetry-util-http = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-util-http";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelContribSrc;
    sourceRoot = "${src.name}/util/opentelemetry-util-http";
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry HTTP utilities"; homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib"; license = licenses.asl20; };
  };

  opentelemetry-exporter-otlp-proto-common = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-exporter-otlp-proto-common";
    version = "1.39.1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelPythonSrc;
    sourceRoot = "${src.name}/exporter/opentelemetry-exporter-otlp-proto-common";
    propagatedBuildInputs = [ opentelemetry-proto ];
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry OTLP exporter proto common"; homepage = "https://github.com/open-telemetry/opentelemetry-python"; license = licenses.asl20; };
  };

  # ── Tier 3 ──

  opentelemetry-instrumentation = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-instrumentation";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelContribSrc;
    sourceRoot = "${src.name}/opentelemetry-instrumentation";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-semantic-conventions ] ++ (with python3Packages; [ wrapt packaging ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry instrumentation base"; homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib"; license = licenses.asl20; };
  };

  recurring-ical-events = python3Packages.buildPythonPackage rec {
    pname = "recurring-ical-events";
    version = "3.8.2";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = fetchFromGitHub {
      owner = "niccokunzmann";
      repo = "python-recurring-ical-events";
      rev = "v${version}";
      hash = "sha256-/xTv/JovC8IVZz14ygnEL5vg/W8xR4Ie78hTi+gG58M=";
    };
    propagatedBuildInputs = [ x-wr-timezone ] ++ (with python3Packages; [ icalendar python-dateutil ]);
    doCheck = false;
    meta = with lib; { description = "Recurring iCalendar event expander"; homepage = "https://github.com/niccokunzmann/python-recurring-ical-events"; license = licenses.lgpl3Plus; };
  };

  opentelemetry-exporter-otlp-proto-grpc = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-exporter-otlp-proto-grpc";
    version = "1.39.1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelPythonSrc;
    sourceRoot = "${src.name}/exporter/opentelemetry-exporter-otlp-proto-grpc";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-sdk opentelemetry-proto opentelemetry-exporter-otlp-proto-common googleapis-common-protos ] ++ (with python3Packages; [ grpcio deprecated ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry OTLP gRPC exporter"; homepage = "https://github.com/open-telemetry/opentelemetry-python"; license = licenses.asl20; };
  };

  qdrant-client = python3Packages.buildPythonPackage rec {
    pname = "qdrant-client";
    version = "1.18.0";
    pyproject = true;
    build-system = [ python3Packages.poetry-core ];
    src = fetchFromGitHub {
      owner = "qdrant";
      repo = "qdrant-client";
      rev = "v${version}";
      hash = "sha256-ZBP1D67u+KZmBi614nuToauI+xhdH1PKD3g6xRfFQxk=";
    };
    propagatedBuildInputs = with python3Packages; [ grpcio httpx numpy portalocker protobuf pydantic urllib3 ];
    doCheck = false;
    meta = with lib; { description = "Qdrant vector search engine client"; homepage = "https://github.com/qdrant/qdrant-client"; license = licenses.asl20; };
  };

  # ── Tier 4 ──

  opentelemetry-instrumentation-asgi = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-instrumentation-asgi";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelContribSrc;
    sourceRoot = "${src.name}/instrumentation/opentelemetry-instrumentation-asgi";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-instrumentation opentelemetry-semantic-conventions opentelemetry-util-http ] ++ (with python3Packages; [ asgiref ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry ASGI instrumentation"; homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib"; license = licenses.asl20; };
  };

  opentelemetry-instrumentation-httpx = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-instrumentation-httpx";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelContribSrc;
    sourceRoot = "${src.name}/instrumentation/opentelemetry-instrumentation-httpx";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-instrumentation opentelemetry-semantic-conventions opentelemetry-util-http ] ++ (with python3Packages; [ httpx wrapt ]);
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry HTTPX instrumentation"; homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib"; license = licenses.asl20; };
  };

  opentelemetry-instrumentation-logging = python3Packages.buildPythonPackage rec {
    pname = "opentelemetry-instrumentation-logging";
    version = "0.60b1";
    pyproject = true;
    build-system = [ python3Packages.hatchling ];
    src = otelContribSrc;
    sourceRoot = "${src.name}/instrumentation/opentelemetry-instrumentation-logging";
    propagatedBuildInputs = [ opentelemetry-api opentelemetry-instrumentation ];
    doCheck = false;
    meta = with lib; { description = "OpenTelemetry logging instrumentation"; homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib"; license = licenses.asl20; };
  };

  langchain-text-splitters = python3Packages.buildPythonPackage rec {
    pname = "langchain-text-splitters";
    version = "1.1.2";
    pyproject = true;
    build-system = [ python3Packages.poetry-core ];
    src = fetchFromGitHub {
      owner = "langchain-ai";
      repo = "langchain";
      rev = "langchain-text-splitters==${version}";
      hash = "sha256-AiRl8N2V2UfYLZfqxM8DHZmT76rH19I1gFyOYc/mpYY=";
    };
    sourceRoot = "${src.name}/libs/text-splitters";
    propagatedBuildInputs = with python3Packages; [ langchain-core ];
    doCheck = false;
    meta = with lib; { description = "LangChain text splitting utilities"; homepage = "https://github.com/langchain-ai/langchain"; license = licenses.mit; };
  };

in
python3Packages.buildPythonApplication rec {
  pname = "nextcloud-mcp-server";
  version = "0.89.0";
  pyproject = true;

  src = fetchFromGitHub {
    owner = "cbcoutinho";
    repo = "nextcloud-mcp-server";
    rev = "v${version}";
    hash = lib.fakeHash;
  };

  build-system = [ python3Packages.hatchling ];

  dependencies = with python3Packages; [
    mcp httpx pillow icalendar pydantic click caldav pyjwt
    aiosqlite alembic authlib fastembed anthropic boto3 starlette
    jinja2 markdownify pymupdf pymupdf4llm openai dynaconf
    mistralai sqlalchemy

    pythonvcard4 prometheus-client python-json-logger importlib-metadata
    googleapis-common-protos opentelemetry-api opentelemetry-proto
    opentelemetry-semantic-conventions opentelemetry-sdk
    x-wr-timezone opentelemetry-util-http opentelemetry-exporter-otlp-proto-common
    opentelemetry-instrumentation recurring-ical-events
    opentelemetry-exporter-otlp-proto-grpc qdrant-client
    opentelemetry-instrumentation-asgi opentelemetry-instrumentation-httpx
    opentelemetry-instrumentation-logging langchain-text-splitters
  ];

  postPatch = ''
    substituteInPlace pyproject.toml \
      --replace-fail '"prometheus-client>=0.21.0"' '"prometheus-client"' \
      --replace-fail '"mcp>=1.27,<1.28"' '"mcp"' \
      --replace-fail '"mcp[cli]>=1.27,<1.28"' '"mcp"' \
      --replace-fail '"pymupdf4llm>=0.2.2"' '"pymupdf4llm"' \
      --replace-fail '"pymupdf>=1.26.6"' '"pymupdf"' \
      --replace-fail '"qrant-client>=1.17.0"' '"qdrant-client"' \
      --replace-fail '"opentelemetry-api>=1.28.2"' '"opentelemetry-api"' \
      --replace-fail '"opentelemetry-sdk>=1.28.2"' '"opentelemetry-sdk"' \
      --replace-fail '"opentelemetry-instrumentation-asgi>=0.49b2"' '"opentelemetry-instrumentation-asgi"' \
      --replace-fail '"opentelemetry-instrumentation-httpx>=0.49b2"' '"opentelemetry-instrumentation-httpx"' \
      --replace-fail '"opentelemetry-instrumentation-logging>=0.49b2"' '"opentelemetry-instrumentation-logging"' \
      --replace-fail '"opentelemetry-exporter-otlp-proto-grpc>=1.28.2"' '"opentelemetry-exporter-otlp-proto-grpc"' \
      --replace-fail '"python-json-logger>=3.2.0"' '"python-json-logger"' \
      --replace-fail '"pythonvcard4>=0.2.0"' '"pythonvcard4"'
  '';

  doCheck = false;

  meta = with lib; {
    description = "MCP server for Nextcloud — files (WebDAV), calendar (CalDAV), contacts (CardDAV), notes, deck, talk, and sharing";
    homepage = "https://github.com/cbcoutinho/nextcloud-mcp-server";
    license = licenses.agpl3Only;
    mainProgram = "nextcloud-mcp-server";
    platforms = platforms.all;
  };
}