refactor: Build and Packaging.

PEP 621 and PEP 631 standardized `pyproject.toml` as the new normal for
Python packages instead of `setup.py`. PEP 517 and PEP 660 created
standards for Python build systems.

This commit removes the `setup.py` file and creates a `pyproject.toml`
one to deal with the new packaging standards.

Signed-off-by: Paulo Vital <[email protected]>

pyproject.toml

@@ -0,0 +1,77 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "instana"
+dynamic = [
+    "version",
+]
+description = "Python Distributed Tracing & Metrics Sensor for Instana."
+readme = "README.md"
+requires-python = ">=3.7"
+license = "MIT"
+keywords = [
+    "performance",
+    "opentracing",
+    "metrics",
+    "monitoring",
+    "tracing",
+    "distributed-tracing",
+]
+authors = [
+    { name = "Instana Team Python Tracer Engineers" },
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Information Technology",
+    "Intended Audience :: Science/Research",
+    "Intended Audience :: System Administrators",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Topic :: Internet :: WWW/HTTP :: WSGI :: Middleware",
+    "Topic :: System :: Monitoring",
+    "Topic :: System :: Networking :: Monitoring",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+]
+dependencies = [
+    "autowrapt>=1.0",
+    "basictracer>=3.1.0",
+    "fysom>=2.1.2",
+    "opentracing>=2.3.0",
+    "protobuf<5.0.0",
+    "requests>=2.6.0",
+    "six>=1.12.0",
+    "urllib3>=1.26.5",
+]
+
+[project.optional-dependencies]
+dev = [
+  "pytest",
+]
+
+[project.urls]
+Documentation = "https://www.ibm.com/docs/en/instana-observability/current?topic=technologies-monitoring-python-instana-python-package"
+Issues = "https://github.com/instana/python-sensor/issues"
+Source = "https://github.com/instana/python-sensor"
+
+[tool.hatch.version]
+path = "src/instana/version.py"
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/src",
+    "/tests",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/instana"]

sonar-project.properties

@@ -1,7 +1,7 @@
 sonar.projectKey=Python-Tracer
 sonar.projectName=Python Tracer
 sonar.sourceEncoding=utf-8
-sonar.sources=instana/
+sonar.sources=src/instana/
 sonar.tests=tests/
 sonar.python.coverage.reportPaths=coverage.xml
 sonar.python.version=3

src/instana/version.py

@@ -3,4 +3,4 @@
 
 # Module version file.  Used by setup.py and snapshot reporting.
 
-VERSION = '2.3.0'
+VERSION = "2.3.0"