diff --git a/.codespellrc b/.codespellrc
index b81e62f640..b82bff4671 100644
--- a/.codespellrc
+++ b/.codespellrc
@@ -1,4 +1,4 @@
 [codespell]
 # skipping auto generated folders
-skip = ./.tox,./.mypy_cache,./docs/_build,./target,*/LICENSE,./venv,.git,./opentelemetry-semantic-conventions
+skip = ./.tox,./.mypy_cache,./docs/_build,./target,*/LICENSE,./venv,.git,./opentelemetry-semantic-conventions,*-requirements*.txt
 ignore-words-list = ans,ue,ot,hist,ro
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 0000000000..3ef461853c
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,54 @@
+name: Lint tests
+
+on:
+  push:
+    branches-ignore:
+    - 'release/*'
+  pull_request:
+
+jobs:
+  lint-3_12:
+    strategy:
+      fail-fast: false  # ensures the entire test matrix is run, even if one permutation fails
+      matrix:
+        package:
+          - "opentelemetry-api"
+          - "opentelemetry-proto"
+          - "opentelemetry-sdk"
+          - "opentelemetry-semantic-conventions"
+          - "opentelemetry-getting-started"
+          - "opentelemetry-opentracing-shim"
+          - "opentelemetry-opencensus-shim"
+          - "opentelemetry-exporter-opencensus"
+          - "opentelemetry-exporter-otlp-proto-common"
+          - "opentelemetry-exporter-otlp-combined"
+          - "opentelemetry-exporter-otlp-proto-grpc"
+          - "opentelemetry-exporter-otlp-proto-http"
+          - "opentelemetry-exporter-otlp-proto-prometheus"
+          - "opentelemetry-exporter-otlp-proto-zipkin-combined"
+          - "opentelemetry-exporter-otlp-proto-zipkin-proto-http"
+          - "opentelemetry-exporter-otlp-proto-zipkin-json"
+          - "opentelemetry-propagator-b3"
+          - "opentelemetry-propagator-jaeger"
+          - "opentelemetry-test-utils"
+        os: [ubuntu-20.04]
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout Core Repo @ SHA - ${{ github.sha }}
+        uses: actions/checkout@v4
+      - name: Set up Python 3.12
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.12
+      - name: Install tox
+        run: pip install tox
+      - name: Cache tox environment
+        # Preserves .tox directory between runs for faster installs
+        uses: actions/cache@v4
+        with:
+          path: |
+            .tox
+            ~/.cache/pip
+          key: v7-build-tox-cache-${{ matrix.package }}-${{ hashFiles('tox.ini', 'gen-requirements.txt', 'dev-requirements.txt') }}
+      - name: run tox
+        run: tox -e lint-${{ matrix.package }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f70b22765a..179233c925 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -56,7 +56,7 @@ jobs:
           - "exporter-zipkin-combined"
           - "exporter-zipkin-proto-http"
           - "exporter-zipkin-json"
-          - "protobuf"
+          - "proto"
           - "propagator-b3"
           - "propagator-jaeger"
         os: [ubuntu-20.04, windows-2019]
@@ -69,6 +69,8 @@ jobs:
             package: "exporter-otlp-combined"
           - python-version: pypy3
             package: "exporter-otlp-proto-grpc"
+          - python-version: pypy3
+            package: "getting-started"
 
     steps:
     - name: Checkout Core Repo @ SHA - ${{ github.sha }}
@@ -98,7 +100,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        tox-environment: ["docker-tests-proto3", "docker-tests-proto4", "lint", "spellcheck",
+        tox-environment: ["docker-tests-proto3", "docker-tests-proto4", "spellcheck",
           "docs", "mypy", "mypyinstalled", "tracecontext"]
     name: ${{ matrix.tox-environment }}
     runs-on: ubuntu-20.04
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34f49c95b4..44938228ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+- OTLP exporter is encoding invalid span/trace IDs in the logs fix
+  ([#4006](https://github.com/open-telemetry/opentelemetry-python/pull/4006))
+- Update sdk process resource detector `process.command_args` attribute to also include the executable itself
+  ([#4032](https://github.com/open-telemetry/opentelemetry-python/pull/4032))
 - Fix `start_time_unix_nano` for delta collection for explicit bucket histogram aggregation
   ([#4009](https://github.com/open-telemetry/opentelemetry-python/pull/4009))
 - Fix `start_time_unix_nano` for delta collection for sum aggregation
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 31eedfef8c..048a9daa6c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -57,7 +57,7 @@ You can run `tox` with the following arguments:
 - `tox -e py312-opentelemetry-api` to e.g. run the API unit tests under a specific
   Python version
 - `tox -e spellcheck` to run a spellcheck on all the code
-- `tox -e lint` to run lint checks on all code
+- `tox -e lint-some-package` to run lint checks on `some-package`
 
 `black` and `isort` are executed when `tox -e lint` is run. The reported errors can be tedious to fix manually.
 An easier way to do so is:
diff --git a/docs/examples/metrics/instruments/requirements.txt b/docs/examples/metrics/instruments/requirements.txt
new file mode 100644
index 0000000000..5c5cb8b1e1
--- /dev/null
+++ b/docs/examples/metrics/instruments/requirements.txt
@@ -0,0 +1,3 @@
+opentelemetry-api~=1.25
+opentelemetry-sdk~=1.25
+opentelemetry-exporter-otlp~=1.25
diff --git a/docs/getting_started/__init__.py b/docs/getting_started/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/docs/getting_started/flask_example.py b/docs/getting_started/flask_example.py
index 64ed606c7f..3ddf61d15f 100644
--- a/docs/getting_started/flask_example.py
+++ b/docs/getting_started/flask_example.py
@@ -40,7 +40,7 @@
 @app.route("/")
 def hello():
     with tracer.start_as_current_span("example-request"):
-        requests.get("http://www.example.com")
+        requests.get("http://www.example.com", timeout=10)
     return "hello"
 
 
diff --git a/docs/getting_started/tests/requirements.txt b/docs/getting_started/tests/requirements.txt
index b22401771a..41880ca863 100644
--- a/docs/getting_started/tests/requirements.txt
+++ b/docs/getting_started/tests/requirements.txt
@@ -23,5 +23,8 @@ Werkzeug==3.0.3
 wrapt==1.15.0
 zipp==3.19.2
 -e opentelemetry-semantic-conventions
+-e opentelemetry-proto
+-e exporter/opentelemetry-exporter-otlp-proto-common
+-e exporter/opentelemetry-exporter-otlp-proto-grpc
 -e opentelemetry-api
 -e opentelemetry-sdk
diff --git a/docs/getting_started/tests/test_flask.py b/docs/getting_started/tests/test_flask.py
index 4d6127f792..ffaa7deb21 100644
--- a/docs/getting_started/tests/test_flask.py
+++ b/docs/getting_started/tests/test_flask.py
@@ -19,14 +19,16 @@
 
 import requests
 from requests.adapters import HTTPAdapter
-from requests.packages.urllib3.util.retry import Retry
+from requests.packages.urllib3.util.retry import (  # pylint: disable=import-error
+    Retry,
+)
 
 
 class TestFlask(unittest.TestCase):
     def test_flask(self):
         dirpath = os.path.dirname(os.path.realpath(__file__))
         server_script = f"{dirpath}/../flask_example.py"
-        server = subprocess.Popen(
+        server = subprocess.Popen(  # pylint: disable=consider-using-with
             [sys.executable, server_script],
             stdout=subprocess.PIPE,
         )
diff --git a/exporter/opentelemetry-exporter-otlp-proto-common/src/opentelemetry/exporter/otlp/proto/common/_internal/_log_encoder/__init__.py b/exporter/opentelemetry-exporter-otlp-proto-common/src/opentelemetry/exporter/otlp/proto/common/_internal/_log_encoder/__init__.py
index 4252ab7f13..47ff0cf3e0 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-common/src/opentelemetry/exporter/otlp/proto/common/_internal/_log_encoder/__init__.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-common/src/opentelemetry/exporter/otlp/proto/common/_internal/_log_encoder/__init__.py
@@ -39,11 +39,21 @@ def encode_logs(batch: Sequence[LogData]) -> ExportLogsServiceRequest:
 
 
 def _encode_log(log_data: LogData) -> PB2LogRecord:
+    span_id = (
+        None
+        if log_data.log_record.span_id == 0
+        else _encode_span_id(log_data.log_record.span_id)
+    )
+    trace_id = (
+        None
+        if log_data.log_record.trace_id == 0
+        else _encode_trace_id(log_data.log_record.trace_id)
+    )
     return PB2LogRecord(
         time_unix_nano=log_data.log_record.timestamp,
         observed_time_unix_nano=log_data.log_record.observed_timestamp,
-        span_id=_encode_span_id(log_data.log_record.span_id),
-        trace_id=_encode_trace_id(log_data.log_record.trace_id),
+        span_id=span_id,
+        trace_id=trace_id,
         flags=int(log_data.log_record.trace_flags),
         body=_encode_value(log_data.log_record.body),
         severity_text=log_data.log_record.severity_text,
diff --git a/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_log_encoder.py b/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_log_encoder.py
index 58620b963e..158940585c 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_log_encoder.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_log_encoder.py
@@ -239,8 +239,8 @@ def get_test_logs(
                                 PB2LogRecord(
                                     time_unix_nano=1644650249738562048,
                                     observed_time_unix_nano=1644650249738562049,
-                                    trace_id=_encode_trace_id(0),
-                                    span_id=_encode_span_id(0),
+                                    trace_id=None,
+                                    span_id=None,
                                     flags=int(TraceFlags.DEFAULT),
                                     severity_text="WARN",
                                     severity_number=SeverityNumber.WARN.value,
diff --git a/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_metrics_encoder.py b/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_metrics_encoder.py
index 70863bb44a..6d68b48f25 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_metrics_encoder.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-common/tests/test_metrics_encoder.py
@@ -296,6 +296,7 @@ def test_encode_gauge_int(self):
                                                     ),
                                                 ],
                                                 time_unix_nano=1641946016139533244,
+                                                start_time_unix_nano=0,
                                                 as_int=9000,
                                             )
                                         ],
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
index c281cbebce..b81fa4e7bb 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py
@@ -21,6 +21,7 @@
 from google.protobuf.duration_pb2 import (  # pylint: disable=no-name-in-module
     Duration,
 )
+from google.protobuf.json_format import MessageToDict
 from google.rpc.error_details_pb2 import RetryInfo
 from grpc import ChannelCredentials, Compression, StatusCode, server
 
@@ -167,6 +168,36 @@ def setUp(self):
                 "third_name", "third_version"
             ),
         )
+        self.log_data_4 = LogData(
+            log_record=LogRecord(
+                timestamp=int(time.time() * 1e9),
+                trace_id=0,
+                span_id=5213367945872657629,
+                trace_flags=TraceFlags(0x01),
+                severity_text="ERROR",
+                severity_number=SeverityNumber.WARN,
+                body="Invalid trace id check",
+                resource=SDKResource({"service": "myapp"}),
+            ),
+            instrumentation_scope=InstrumentationScope(
+                "fourth_name", "fourth_version"
+            ),
+        )
+        self.log_data_5 = LogData(
+            log_record=LogRecord(
+                timestamp=int(time.time() * 1e9),
+                trace_id=2604504634922341076776623263868986801,
+                span_id=0,
+                trace_flags=TraceFlags(0x01),
+                severity_text="ERROR",
+                severity_number=SeverityNumber.WARN,
+                body="Invalid span id check",
+                resource=SDKResource({"service": "myapp"}),
+            ),
+            instrumentation_scope=InstrumentationScope(
+                "fifth_name", "fifth_version"
+            ),
+        )
 
     def tearDown(self):
         self.server.stop(None)
@@ -342,6 +373,43 @@ def test_failure(self):
             self.exporter.export([self.log_data_1]), LogExportResult.FAILURE
         )
 
+    def export_log_and_deserialize(self, log_data):
+        # pylint: disable=protected-access
+        translated_data = self.exporter._translate_data([log_data])
+        request_dict = MessageToDict(translated_data)
+        log_records = (
+            request_dict.get("resourceLogs")[0]
+            .get("scopeLogs")[0]
+            .get("logRecords")
+        )
+        return log_records
+
+    def test_exported_log_without_trace_id(self):
+        log_records = self.export_log_and_deserialize(self.log_data_4)
+        if log_records:
+            log_record = log_records[0]
+            self.assertIn("spanId", log_record)
+            self.assertNotIn(
+                "traceId",
+                log_record,
+                "traceId should not be present in the log record",
+            )
+        else:
+            self.fail("No log records found")
+
+    def test_exported_log_without_span_id(self):
+        log_records = self.export_log_and_deserialize(self.log_data_5)
+        if log_records:
+            log_record = log_records[0]
+            self.assertIn("traceId", log_record)
+            self.assertNotIn(
+                "spanId",
+                log_record,
+                "spanId should not be present in the log record",
+            )
+        else:
+            self.fail("No log records found")
+
     def test_translate_log_data(self):
 
         expected = ExportLogsServiceRequest(
diff --git a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
index 6b6aafd465..e92ea389af 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-http/tests/test_proto_log_exporter.py
@@ -20,6 +20,7 @@
 
 import requests
 import responses
+from google.protobuf.json_format import MessageToDict
 
 from opentelemetry._logs import SeverityNumber
 from opentelemetry.exporter.otlp.proto.http import Compression
@@ -31,6 +32,9 @@
     OTLPLogExporter,
 )
 from opentelemetry.exporter.otlp.proto.http.version import __version__
+from opentelemetry.proto.collector.logs.v1.logs_service_pb2 import (
+    ExportLogsServiceRequest,
+)
 from opentelemetry.sdk._logs import LogData
 from opentelemetry.sdk._logs import LogRecord as SDKLogRecord
 from opentelemetry.sdk._logs.export import LogExportResult
@@ -167,6 +171,76 @@ def test_exporter_env(self):
         )
         self.assertIsInstance(exporter._session, requests.Session)
 
+    @staticmethod
+    def export_log_and_deserialize(log):
+        with patch("requests.Session.post") as mock_post:
+            exporter = OTLPLogExporter()
+            exporter.export([log])
+            request_body = mock_post.call_args[1]["data"]
+            request = ExportLogsServiceRequest()
+            request.ParseFromString(request_body)
+            request_dict = MessageToDict(request)
+            log_records = (
+                request_dict.get("resourceLogs")[0]
+                .get("scopeLogs")[0]
+                .get("logRecords")
+            )
+            return log_records
+
+    def test_exported_log_without_trace_id(self):
+        log = LogData(
+            log_record=SDKLogRecord(
+                timestamp=1644650195189786182,
+                trace_id=0,
+                span_id=1312458408527513292,
+                trace_flags=TraceFlags(0x01),
+                severity_text="WARN",
+                severity_number=SeverityNumber.WARN,
+                body="Invalid trace id check",
+                resource=SDKResource({"first_resource": "value"}),
+                attributes={"a": 1, "b": "c"},
+            ),
+            instrumentation_scope=InstrumentationScope("name", "version"),
+        )
+        log_records = TestOTLPHTTPLogExporter.export_log_and_deserialize(log)
+        if log_records:
+            log_record = log_records[0]
+            self.assertIn("spanId", log_record)
+            self.assertNotIn(
+                "traceId",
+                log_record,
+                "trace_id should not be present in the log record",
+            )
+        else:
+            self.fail("No log records found")
+
+    def test_exported_log_without_span_id(self):
+        log = LogData(
+            log_record=SDKLogRecord(
+                timestamp=1644650195189786360,
+                trace_id=89564621134313219400156819398935297696,
+                span_id=0,
+                trace_flags=TraceFlags(0x01),
+                severity_text="WARN",
+                severity_number=SeverityNumber.WARN,
+                body="Invalid span id check",
+                resource=SDKResource({"first_resource": "value"}),
+                attributes={"a": 1, "b": "c"},
+            ),
+            instrumentation_scope=InstrumentationScope("name", "version"),
+        )
+        log_records = TestOTLPHTTPLogExporter.export_log_and_deserialize(log)
+        if log_records:
+            log_record = log_records[0]
+            self.assertIn("traceId", log_record)
+            self.assertNotIn(
+                "spanId",
+                log_record,
+                "spanId should not be present in the log record",
+            )
+        else:
+            self.fail("No log records found")
+
     @responses.activate
     @patch("opentelemetry.exporter.otlp.proto.http._log_exporter.sleep")
     def test_exponential_backoff(self, mock_sleep):
diff --git a/exporter/opentelemetry-exporter-zipkin-proto-http/test-requirements.txt b/exporter/opentelemetry-exporter-zipkin-proto-http/test-requirements.txt
index a3b296b480..c1913e6928 100644
--- a/exporter/opentelemetry-exporter-zipkin-proto-http/test-requirements.txt
+++ b/exporter/opentelemetry-exporter-zipkin-proto-http/test-requirements.txt
@@ -17,6 +17,7 @@ urllib3==2.2.2
 wrapt==1.16.0
 zipp==3.19.2
 -e opentelemetry-api
+-e opentelemetry-proto
 -e exporter/opentelemetry-exporter-zipkin-json
 -e opentelemetry-sdk
 -e tests/opentelemetry-test-utils
diff --git a/lint-requirements.txt b/lint-requirements.txt
new file mode 100644
index 0000000000..006edb46e8
--- /dev/null
+++ b/lint-requirements.txt
@@ -0,0 +1,15 @@
+astroid==3.0.3
+black==24.3.0
+click==8.1.7
+dill==0.3.8
+flake8==6.1.0
+isort==5.12.0
+mccabe==0.7.0
+mypy-extensions==1.0.0
+packaging==24.0
+pathspec==0.12.1
+platformdirs==4.2.1
+pycodestyle==2.11.1
+pyflakes==3.1.0
+pylint==3.0.2
+tomlkit==0.12.4
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/aggregation.py b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/aggregation.py
index b389cc6ba5..3a09cdcfea 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/aggregation.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/aggregation.py
@@ -370,7 +370,7 @@ def collect(
 
         return NumberDataPoint(
             attributes=self._attributes,
-            start_time_unix_nano=0,
+            start_time_unix_nano=None,
             time_unix_nano=collection_start_nano,
             value=value,
         )
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py b/opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py
index 77a0ca9618..1fed32c0be 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py
@@ -348,7 +348,7 @@ def detect(self) -> "Resource":
         _process_executable_path = os.path.dirname(_process_executable_name)
         _process_command = sys.argv[0]
         _process_command_line = " ".join(sys.argv)
-        _process_command_args = sys.argv[1:]
+        _process_command_args = sys.argv
         resource_info = {
             PROCESS_RUNTIME_DESCRIPTION: sys.version,
             PROCESS_RUNTIME_NAME: sys.implementation.name,
diff --git a/opentelemetry-sdk/tests/metrics/test_aggregation.py b/opentelemetry-sdk/tests/metrics/test_aggregation.py
index 37656b0a34..fb87d177e8 100644
--- a/opentelemetry-sdk/tests/metrics/test_aggregation.py
+++ b/opentelemetry-sdk/tests/metrics/test_aggregation.py
@@ -236,6 +236,8 @@ def test_collect(self):
 
         self.assertEqual(first_number_data_point.value, 1)
 
+        self.assertIsNone(first_number_data_point.start_time_unix_nano)
+
         last_value_aggregation.aggregate(measurement(1))
 
         # CI fails the last assertion without this
@@ -249,6 +251,8 @@ def test_collect(self):
 
         self.assertEqual(second_number_data_point.value, 1)
 
+        self.assertIsNone(second_number_data_point.start_time_unix_nano)
+
         self.assertGreater(
             second_number_data_point.time_unix_nano,
             first_number_data_point.time_unix_nano,
diff --git a/opentelemetry-sdk/tests/resources/test_resources.py b/opentelemetry-sdk/tests/resources/test_resources.py
index a0c6159010..8a42d0c6d0 100644
--- a/opentelemetry-sdk/tests/resources/test_resources.py
+++ b/opentelemetry-sdk/tests/resources/test_resources.py
@@ -608,7 +608,7 @@ def test_process_detector(self):
         )
         self.assertEqual(
             aggregated_resource.attributes[PROCESS_COMMAND_ARGS],
-            tuple(sys.argv[1:]),
+            tuple(sys.argv),
         )
 
     def test_resource_detector_entry_points_default(self):
diff --git a/opentelemetry-sdk/tests/trace/export/test_export.py b/opentelemetry-sdk/tests/trace/export/test_export.py
index 2ba76e9b41..7a29ef3c42 100644
--- a/opentelemetry-sdk/tests/trace/export/test_export.py
+++ b/opentelemetry-sdk/tests/trace/export/test_export.py
@@ -462,8 +462,8 @@ def _target():
         span_processor.shutdown()
 
     @mark.skipif(
-        python_implementation() == "PyPy" and system() == "Windows",
-        reason="This test randomly fails with huge delta in Windows with PyPy",
+        python_implementation() == "PyPy" or system() == "Windows",
+        reason="This test randomly fails with huge delta in Windows or PyPy",
     )
     def test_batch_span_processor_scheduled_delay(self):
         """Test that spans are exported each schedule_delay_millis"""
diff --git a/tests/opentelemetry-test-utils/src/opentelemetry/test/metrictestutil.py b/tests/opentelemetry-test-utils/src/opentelemetry/test/metrictestutil.py
index 08354bf0de..33f1039ef8 100644
--- a/tests/opentelemetry-test-utils/src/opentelemetry/test/metrictestutil.py
+++ b/tests/opentelemetry-test-utils/src/opentelemetry/test/metrictestutil.py
@@ -83,7 +83,7 @@ def _generate_gauge(
             data_points=[
                 NumberDataPoint(
                     attributes=attributes,
-                    start_time_unix_nano=1641946015139533244,
+                    start_time_unix_nano=None,
                     time_unix_nano=1641946016139533244,
                     value=value,
                 )
diff --git a/tox.ini b/tox.ini
index 48ca1f10df..9d768888c9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,84 +5,101 @@ skip_missing_interpreters = True
 envlist =
     ; Environments are organized by individual package, allowing
     ; for specifying supported Python versions per package.
-    py3{8,9,10,11,12}-opentelemetry-api
-    pypy3-opentelemetry-api
+
+    py3{8,9,10,11,12}-test-opentelemetry-api
+    pypy3-test-opentelemetry-api
+    lint-opentelemetry-api
 
     ; The numbers at the end of the environment names
     ; below mean these dependencies are being used:
     ; 0: protobuf==3.20.3
     ; 1: protobuf==4.25.3
-    py3{8,9,10,11,12}-opentelemetry-protobuf-{0,1}
-    pypy3-opentelemetry-protobuf-{0,1}
+    py3{8,9,10,11,12}-test-opentelemetry-proto-{0,1}
+    pypy3-test-opentelemetry-proto-{0,1}
+    lint-opentelemetry-proto
 
     py3{8,9,10,11,12}-opentelemetry-sdk
     pypy3-opentelemetry-sdk
+    lint-opentelemetry-sdk
     benchmark-opentelemetry-sdk
 
-    py3{8,9,10,11,12}-opentelemetry-semantic-conventions
-    pypy3-opentelemetry-semantic-conventions
+    py3{8,9,10,11,12}-test-opentelemetry-semantic-conventions
+    pypy3-test-opentelemetry-semantic-conventions
+    lint-opentelemetry-semantic-conventions
 
-    ; docs/getting-started
-    py3{8,9,10,11,12}-opentelemetry-getting-started
-    pypy3-opentelemetry-getting-started
+    py3{8,9,10,11,12}-test-opentelemetry-getting-started
+    lint-opentelemetry-getting-started
 
-    py3{8,9,10,11,12}-opentelemetry-opentracing-shim
-    pypy3-opentelemetry-opentracing-shim
+    py3{8,9,10,11,12}-test-opentelemetry-opentracing-shim
+    pypy3-test-opentelemetry-opentracing-shim
+    lint-opentelemetry-opentracing-shim
 
-    py3{8,9,10,11,12}-opentelemetry-opencensus-shim
+    py3{8,9,10,11,12}-test-opentelemetry-opencensus-shim
     ; opencensus-shim intentionally excluded from pypy3 (grpcio install fails)
+    lint-opentelemetry-opencensus-shim
 
-    py3{8,9,10,11,12}-opentelemetry-exporter-opencensus
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-opencensus
     ; exporter-opencensus intentionally excluded from pypy3
+    lint-opentelemetry-exporter-opencensus
 
     ; The numbers at the end of the environment names
     ; below mean these dependencies are being used:
     ; 0: protobuf==3.20.3
     ; 1: protobuf==4.25.3
-    py3{8,9,10,11,12}-opentelemetry-exporter-otlp-proto-common-{0,1}
-    pypy3-opentelemetry-exporter-otlp-proto-common-{0,1}
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-otlp-proto-common-{0,1}
+    pypy3-test-opentelemetry-exporter-otlp-proto-common-{0,1}
+    lint-opentelemetry-exporter-otlp-proto-common
 
     ; opentelemetry-exporter-otlp
-    py3{8,9,10,11,12}-opentelemetry-exporter-otlp-combined
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-otlp-combined
     ; intentionally excluded from pypy3
+    lint-opentelemetry-exporter-otlp-combined
 
     ; The numbers at the end of the environment names
     ; below mean these dependencies are being used:
     ; 0: protobuf==3.20.3
     ; 1: protobuf==4.25.3
-    py3{8,9,10,11,12}-opentelemetry-exporter-otlp-proto-grpc-{0,1}
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-otlp-proto-grpc-{0,1}
     ; intentionally excluded from pypy3
+    lint-opentelemetry-exporter-otlp-proto-grpc
 
     ; The numbers at the end of the environment names
     ; below mean these dependencies are being used:
     ; 0: protobuf==3.20.3
     ; 1: protobuf==4.25.3
-    py3{8,9,10,11,12}-opentelemetry-exporter-otlp-proto-http-{0,1}
-    pypy3-opentelemetry-exporter-otlp-proto-http-{0,1}
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-otlp-proto-http-{0,1}
+    pypy3-test-opentelemetry-exporter-otlp-proto-http-{0,1}
+    lint-opentelemetry-exporter-otlp-proto-http
 
-    py3{8,9,10,11,12}-opentelemetry-exporter-prometheus
-    pypy3-opentelemetry-exporter-prometheus
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-prometheus
+    pypy3-test-opentelemetry-exporter-prometheus
+    lint-opentelemetry-exporter-prometheus
 
     ; opentelemetry-exporter-zipkin
-    py3{8,9,10,11,12}-opentelemetry-exporter-zipkin-combined
-    pypy3-opentelemetry-exporter-zipkin-combined
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-zipkin-combined
+    pypy3-test-opentelemetry-exporter-zipkin-combined
+    lint-opentelemetry-exporter-zipkin-combined
 
-    py3{8,9,10,11,12}-opentelemetry-exporter-zipkin-proto-http
-    pypy3-opentelemetry-exporter-zipkin-proto-http
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-zipkin-proto-http
+    pypy3-test-opentelemetry-exporter-zipkin-proto-http
+    lint-opentelemetry-exporter-zipkin-proto-http
 
-    py3{8,9,10,11,12}-opentelemetry-exporter-zipkin-json
-    pypy3-opentelemetry-exporter-zipkin-json
+    py3{8,9,10,11,12}-test-opentelemetry-exporter-zipkin-json
+    pypy3-test-opentelemetry-exporter-zipkin-json
+    lint-opentelemetry-exporter-zipkin-json
 
-    py3{8,9,10,11,12}-opentelemetry-propagator-b3
-    pypy3-opentelemetry-propagator-b3
+    py3{8,9,10,11,12}-test-opentelemetry-propagator-b3
+    pypy3-test-opentelemetry-propagator-b3
+    lint-opentelemetry-propagator-b3
 
-    py3{8,9,10,11,12}-opentelemetry-propagator-jaeger
-    pypy3-opentelemetry-propagator-jaeger
+    py3{8,9,10,11,12}-test-opentelemetry-propagator-jaeger
+    pypy3-test-opentelemetry-propagator-jaeger
+    lint-opentelemetry-propagator-jaeger
 
-    py3{8,9,10,11,12}-opentelemetry-test-utils
-    pypy3-opentelemetry-test-utils
+    py3{8,9,10,11,12}-test-opentelemetry-test-utils
+    pypy3-test-opentelemetry-test-utils
+    lint-opentelemetry-test-utils
 
-    lint
     spellcheck
     tracecontext
     mypy,mypyinstalled
@@ -92,6 +109,7 @@ envlist =
 
 [testenv]
 deps =
+  lint: -r dev-requirements.txt
   coverage: pytest
   coverage: pytest-cov
 
@@ -120,8 +138,9 @@ commands_pre =
 
   test-utils: pip install -r {toxinidir}/tests/opentelemetry-test-utils/test-requirements.txt
 
-  protobuf-0: pip install -r {toxinidir}/opentelemetry-proto/test-requirements-0.txt
-  protobuf-1: pip install -r {toxinidir}/opentelemetry-proto/test-requirements-1.txt
+  opentelemetry-proto-0: pip install -r {toxinidir}/opentelemetry-proto/test-requirements-0.txt
+  opentelemetry-proto-1: pip install -r {toxinidir}/opentelemetry-proto/test-requirements-1.txt
+  lint-opentelemetry-proto: pip install -r {toxinidir}/opentelemetry-proto/test-requirements-1.txt
 
   getting-started: pip install -r {toxinidir}/docs/getting_started/tests/requirements.txt
   getting-started: pip install -e {env:CONTRIB_REPO}\#egg=opentelemetry-util-http&subdirectory=util/opentelemetry-util-http
@@ -134,14 +153,17 @@ commands_pre =
 
   exporter-otlp-proto-common-0: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/test-requirements-0.txt
   exporter-otlp-proto-common-1: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/test-requirements-1.txt
+  lint-opentelemetry-exporter-otlp-proto-common: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/test-requirements-1.txt
 
   exporter-otlp-combined: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp/test-requirements.txt
 
   opentelemetry-exporter-otlp-proto-grpc-0: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements-0.txt
   opentelemetry-exporter-otlp-proto-grpc-1: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements-1.txt
+  lint-opentelemetry-exporter-otlp-proto-grpc: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements-1.txt
 
   opentelemetry-exporter-otlp-proto-http-0: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/test-requirements-0.txt
   opentelemetry-exporter-otlp-proto-http-1: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/test-requirements-1.txt
+  lint-opentelemetry-exporter-otlp-proto-http: pip install -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/test-requirements-1.txt
 
   opentracing-shim: pip install -r {toxinidir}/shim/opentelemetry-opentracing-shim/test-requirements.txt
 
@@ -168,28 +190,138 @@ commands_pre =
   mypyinstalled: pip install file://{toxinidir}/opentelemetry-api/
 
 commands =
-  api: pytest {toxinidir}/opentelemetry-api/tests {posargs}
-  sdk: pytest {toxinidir}/opentelemetry-sdk/tests {posargs}
+  test-opentelemetry-api: pytest {toxinidir}/opentelemetry-api/tests {posargs}
+  lint-opentelemetry-api: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/opentelemetry-api
+  lint-opentelemetry-api: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/opentelemetry-api
+  lint-opentelemetry-api: flake8 --config {toxinidir}/.flake8 {toxinidir}/opentelemetry-api
+  lint-opentelemetry-api: pylint {toxinidir}/opentelemetry-api/src/opentelemetry
+  lint-opentelemetry-api: pylint {toxinidir}/opentelemetry-api/tests
+
+  test-opentelemetry-sdk: pytest {toxinidir}/opentelemetry-sdk/tests {posargs}
+  lint-opentelemetry-sdk: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/opentelemetry-sdk
+  lint-opentelemetry-sdk: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/opentelemetry-sdk
+  lint-opentelemetry-sdk: flake8 --config {toxinidir}/.flake8 {toxinidir}/opentelemetry-sdk
+  lint-opentelemetry-sdk: pylint {toxinidir}/opentelemetry-sdk/src/opentelemetry
+  lint-opentelemetry-sdk: pylint {toxinidir}/opentelemetry-sdk/tests
   benchmark-opentelemetry-sdk: pytest {toxinidir}/opentelemetry-sdk/benchmarks {posargs} --benchmark-json=sdk-benchmark.json
-  protobuf: pytest {toxinidir}/opentelemetry-proto/tests {posargs}
-  semantic-conventions: pytest {toxinidir}/opentelemetry-semantic-conventions/tests {posargs}
-  getting-started: pytest {toxinidir}/docs/getting_started/tests {posargs}
-  opentracing-shim: pytest {toxinidir}/shim/opentelemetry-opentracing-shim/tests {posargs}
-  opencensus-shim: pytest {toxinidir}/shim/opentelemetry-opencensus-shim/tests {posargs}
-
-  exporter-opencensus: pytest {toxinidir}/exporter/opentelemetry-exporter-opencensus/tests {posargs}
-  exporter-otlp-proto-common: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/tests {posargs}
-  exporter-otlp-combined: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp/tests {posargs}
-  exporter-otlp-proto-grpc: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/tests {posargs}
-  exporter-otlp-proto-http: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/tests {posargs}
-  exporter-prometheus: pytest {toxinidir}/exporter/opentelemetry-exporter-prometheus/tests {posargs}
-  exporter-zipkin-combined: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin/tests {posargs}
-  exporter-zipkin-proto-http: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http/tests {posargs}
-  exporter-zipkin-json: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin-json/tests {posargs}
-
-  propagator-b3: pytest {toxinidir}/propagator/opentelemetry-propagator-b3/tests {posargs}
-  propagator-jaeger: pytest {toxinidir}/propagator/opentelemetry-propagator-jaeger/tests {posargs}
-  test-utils: pytest {toxinidir}/tests/opentelemetry-test-utils/tests {posargs}
+
+  test-opentelemetry-proto: pytest {toxinidir}/opentelemetry-proto/tests {posargs}
+  lint-opentelemetry-proto: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/opentelemetry-proto
+  lint-opentelemetry-proto: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/opentelemetry-proto
+  lint-opentelemetry-proto: flake8 --config {toxinidir}/.flake8 {toxinidir}/opentelemetry-proto
+  lint-opentelemetry-proto: pylint {toxinidir}/opentelemetry-proto/src/opentelemetry
+  lint-opentelemetry-proto: pylint {toxinidir}/opentelemetry-proto/tests
+
+  test-opentelemetry-semantic-conventions: pytest {toxinidir}/opentelemetry-semantic-conventions/tests {posargs}
+  lint-opentelemetry-semantic-conventions: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/opentelemetry-semantic-conventions
+  lint-opentelemetry-semantic-conventions: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/opentelemetry-semantic-conventions
+  lint-opentelemetry-semantic-conventions: flake8 --config {toxinidir}/.flake8 {toxinidir}/opentelemetry-semantic-conventions
+  lint-opentelemetry-semantic-conventions: pylint {toxinidir}/opentelemetry-semantic-conventions/src/opentelemetry
+  lint-opentelemetry-semantic-conventions: pylint {toxinidir}/opentelemetry-semantic-conventions/tests
+
+  test-opentelemetry-getting-started: pytest {toxinidir}/docs/getting_started/tests {posargs}
+  lint-opentelemetry-getting-started: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/docs/getting_started
+  lint-opentelemetry-getting-started: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/docs/getting_started
+  lint-opentelemetry-getting-started: flake8 --config {toxinidir}/.flake8 {toxinidir}/docs/getting_started
+  lint-opentelemetry-getting-started: pylint {toxinidir}/docs/getting_started
+
+  test-opentelemetry-opentracing-shim: pytest {toxinidir}/shim/opentelemetry-opentracing-shim/tests {posargs}
+  lint-opentelemetry-opentracing-shim: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/shim/opentelemetry-opentracing-shim
+  lint-opentelemetry-opentracing-shim: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/shim/opentelemetry-opentracing-shim
+  lint-opentelemetry-opentracing-shim: flake8 --config {toxinidir}/.flake8 {toxinidir}/shim/opentelemetry-opentracing-shim
+  lint-opentelemetry-opentracing-shim: pylint {toxinidir}/shim/opentelemetry-opentracing-shim/src/opentelemetry
+  lint-opentelemetry-opentracing-shim: pylint {toxinidir}/shim/opentelemetry-opentracing-shim/tests
+
+  test-opentelemetry-opencensus-shim: pytest {toxinidir}/shim/opentelemetry-opencensus-shim/tests {posargs}
+  lint-opentelemetry-opencensus-shim: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/shim/opentelemetry-opencensus-shim
+  lint-opentelemetry-opencensus-shim: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/shim/opentelemetry-opencensus-shim
+  lint-opentelemetry-opencensus-shim: flake8 --config {toxinidir}/.flake8 {toxinidir}/shim/opentelemetry-opencensus-shim
+  lint-opentelemetry-opencensus-shim: pylint {toxinidir}/shim/opentelemetry-opencensus-shim/src/opentelemetry
+  lint-opentelemetry-opencensus-shim: pylint {toxinidir}/shim/opentelemetry-opencensus-shim/tests
+
+  test-opentelemetry-exporter-opencensus: pytest {toxinidir}/exporter/opentelemetry-exporter-opencensus/tests {posargs}
+  lint-opentelemetry-exporter-opencensus: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-opencensus
+  lint-opentelemetry-exporter-opencensus: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-opencensus
+  lint-opentelemetry-exporter-opencensus: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-opencensus
+  lint-opentelemetry-exporter-opencensus: pylint {toxinidir}/exporter/opentelemetry-exporter-opencensus/src/opentelemetry
+  lint-opentelemetry-exporter-opencensus: pylint {toxinidir}/exporter/opentelemetry-exporter-opencensus/tests
+
+  test-opentelemetry-exporter-otlp-proto-common: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/tests {posargs}
+  lint-opentelemetry-exporter-otlp-proto-common: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common
+  lint-opentelemetry-exporter-otlp-proto-common: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common
+  lint-opentelemetry-exporter-otlp-proto-common: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common
+  lint-opentelemetry-exporter-otlp-proto-common: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/src/opentelemetry
+  lint-opentelemetry-exporter-otlp-proto-common: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/tests
+
+  test-opentelemetry-exporter-otlp-combined: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp/tests {posargs}
+  lint-opentelemetry-exporter-otlp-combined: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-otlp
+  lint-opentelemetry-exporter-otlp-combined: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-otlp
+  lint-opentelemetry-exporter-otlp-combined: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-otlp
+  lint-opentelemetry-exporter-otlp-combined: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp/src/opentelemetry
+  lint-opentelemetry-exporter-otlp-combined: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp/tests
+
+  test-opentelemetry-exporter-otlp-proto-grpc: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/tests {posargs}
+  lint-opentelemetry-exporter-otlp-proto-grpc: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc
+  lint-opentelemetry-exporter-otlp-proto-grpc: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc
+  lint-opentelemetry-exporter-otlp-proto-grpc: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc
+  lint-opentelemetry-exporter-otlp-proto-grpc: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry
+  lint-opentelemetry-exporter-otlp-proto-grpc: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/tests
+
+  test-opentelemetry-exporter-otlp-proto-http: pytest {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/tests {posargs}
+  lint-opentelemetry-exporter-otlp-proto-http: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http
+  lint-opentelemetry-exporter-otlp-proto-http: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http
+  lint-opentelemetry-exporter-otlp-proto-http: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http
+  lint-opentelemetry-exporter-otlp-proto-http: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry
+  lint-opentelemetry-exporter-otlp-proto-http: pylint {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/tests
+
+  test-opentelemetry-exporter-prometheus: pytest {toxinidir}/exporter/opentelemetry-exporter-prometheus/tests {posargs}
+  lint-opentelemetry-exporter-prometheus: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-prometheus
+  lint-opentelemetry-exporter-prometheus: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-prometheus
+  lint-opentelemetry-exporter-prometheus: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-prometheus
+  lint-opentelemetry-exporter-prometheus: pylint {toxinidir}/exporter/opentelemetry-exporter-prometheus/src/opentelemetry
+  lint-opentelemetry-exporter-prometheus: pylint {toxinidir}/exporter/opentelemetry-exporter-prometheus/tests
+
+  test-opentelemetry-exporter-zipkin-combined: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin/tests {posargs}
+  lint-opentelemetry-exporter-zipkin-combined: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-zipkin
+  lint-opentelemetry-exporter-zipkin-combined: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-zipkin
+  lint-opentelemetry-exporter-zipkin-combined: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-zipkin
+  lint-opentelemetry-exporter-zipkin-combined: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin/src/opentelemetry
+  lint-opentelemetry-exporter-zipkin-combined: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin/tests
+
+  test-opentelemetry-exporter-zipkin-proto-http: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http/tests {posargs}
+  lint-opentelemetry-exporter-zipkin-proto-http: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http
+  lint-opentelemetry-exporter-zipkin-proto-http: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http
+  lint-opentelemetry-exporter-zipkin-proto-http: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http
+  lint-opentelemetry-exporter-zipkin-proto-http: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http/src/opentelemetry
+  lint-opentelemetry-exporter-zipkin-proto-http: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http/tests
+
+  test-opentelemetry-exporter-zipkin-json: pytest {toxinidir}/exporter/opentelemetry-exporter-zipkin-json/tests {posargs}
+  lint-opentelemetry-exporter-zipkin-json: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/exporter/opentelemetry-exporter-zipkin-json
+  lint-opentelemetry-exporter-zipkin-json: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/exporter/opentelemetry-exporter-zipkin-json
+  lint-opentelemetry-exporter-zipkin-json: flake8 --config {toxinidir}/.flake8 {toxinidir}/exporter/opentelemetry-exporter-zipkin-json
+  lint-opentelemetry-exporter-zipkin-json: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin-json/src/opentelemetry
+  lint-opentelemetry-exporter-zipkin-json: pylint {toxinidir}/exporter/opentelemetry-exporter-zipkin-json/tests
+
+  test-opentelemetry-propagator-b3: pytest {toxinidir}/propagator/opentelemetry-propagator-b3/tests {posargs}
+  lint-opentelemetry-propagator-b3: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/propagator/opentelemetry-propagator-b3
+  lint-opentelemetry-propagator-b3: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/propagator/opentelemetry-propagator-b3
+  lint-opentelemetry-propagator-b3: flake8 --config {toxinidir}/.flake8 {toxinidir}/propagator/opentelemetry-propagator-b3
+  lint-opentelemetry-propagator-b3: pylint {toxinidir}/propagator/opentelemetry-propagator-b3/src/opentelemetry
+  lint-opentelemetry-propagator-b3: pylint {toxinidir}/propagator/opentelemetry-propagator-b3/tests
+
+  test-opentelemetry-propagator-jaeger: pytest {toxinidir}/propagator/opentelemetry-propagator-jaeger/tests {posargs}
+  lint-opentelemetry-propagator-jaeger: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/propagator/opentelemetry-propagator-jaeger
+  lint-opentelemetry-propagator-jaeger: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/propagator/opentelemetry-propagator-jaeger
+  lint-opentelemetry-propagator-jaeger: flake8 --config {toxinidir}/.flake8 {toxinidir}/propagator/opentelemetry-propagator-jaeger
+  lint-opentelemetry-propagator-jaeger: pylint {toxinidir}/propagator/opentelemetry-propagator-jaeger/src/opentelemetry
+  lint-opentelemetry-propagator-jaeger: pylint {toxinidir}/propagator/opentelemetry-propagator-jaeger/tests
+
+  test-opentelemetry-test-utils: pytest {toxinidir}/tests/opentelemetry-test-utils/tests {posargs}
+  lint-opentelemetry-test-utils: black --diff --check --config {toxinidir}/pyproject.toml {toxinidir}/tests/opentelemetry-test-utils
+  lint-opentelemetry-test-utils: isort --diff --check-only --settings-path {toxinidir}/.isort.cfg {toxinidir}/tests/opentelemetry-test-utils
+  lint-opentelemetry-test-utils: flake8 --config {toxinidir}/.flake8 {toxinidir}/tests/opentelemetry-test-utils
+  lint-opentelemetry-test-utils: pylint {toxinidir}/tests/opentelemetry-test-utils/src/opentelemetry
+  lint-opentelemetry-test-utils: pylint {toxinidir}/tests/opentelemetry-test-utils/tests
 
   coverage: {toxinidir}/scripts/coverage.sh
 
@@ -203,43 +335,25 @@ commands =
 ; implicit Any due to unfollowed import would result).
   mypyinstalled: mypy --install-types --non-interactive --namespace-packages opentelemetry-api/tests/mypysmoke.py --strict
 
-[testenv:spellcheck]
+[testenv:lint]
 basepython: python3
 recreate = True
 deps =
-  codespell==2.2.6
+  -r dev-requirements.txt
 
 commands =
-  codespell
+  black --config {toxinidir}/pyproject.toml {toxinidir} --diff --check
+  isort --settings-path {toxinidir}/.isort.cfg {toxinidir} --diff --check-only
+  flake8 --config {toxinidir}/.flake8 {toxinidir}
 
-[testenv:lint]
+[testenv:spellcheck]
 basepython: python3
 recreate = True
 deps =
-  -r dev-requirements.txt
-
-commands_pre =
-  pip install -r {toxinidir}/opentelemetry-api/test-requirements.txt \
-  -r {toxinidir}/opentelemetry-sdk/test-requirements.txt \
-  -r {toxinidir}/opentelemetry-semantic-conventions/test-requirements.txt \
-  -r {toxinidir}/opentelemetry-proto/test-requirements-0.txt \
-  -r {toxinidir}/shim/opentelemetry-opentracing-shim/test-requirements.txt \
-  -r {toxinidir}/shim/opentelemetry-opencensus-shim/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-opencensus/test-requirements.txt \
-  -r {toxinidir}/tests/opentelemetry-test-utils/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-common/test-requirements-0.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-http/test-requirements-0.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements-0.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-prometheus/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-zipkin-proto-http/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-zipkin-json/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-otlp/test-requirements.txt \
-  -r {toxinidir}/exporter/opentelemetry-exporter-zipkin/test-requirements.txt \
-  -r {toxinidir}/propagator/opentelemetry-propagator-b3/test-requirements.txt \
-  -r {toxinidir}/propagator/opentelemetry-propagator-jaeger/test-requirements.txt
+  codespell==2.2.6
 
 commands =
-  python scripts/eachdist.py lint --check-only
+  codespell
 
 [testenv:docs]
 basepython: python3