Moving towards pyproject.toml

Changes regarding setting up the build configuration in pyproject.toml
file.

- Getting rid of egg build
- Updating related dependencies and stuff needed

pyproject.toml

@@ -1,3 +1,52 @@
+[build-system]
+requires = [
+  "setuptools >= 61.0",
+]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pyfdb"
+dynamic = ["version"]
+
+description="Python interface to FDB"
+keywords = [
+  "python",
+  "fdb",
+  "tools",
+]
+
+license = { file = "LICENSE" }
+authors = [
+  { name = "European Centre for Medium-Range Weather Forecasts (ECMWF)", email = "software.support@ecmwf.int" },
+]
+
+urls={ "pyfdb" =}
+
+urls.Documentation = "https://github.com/ecmwf/pyfdb"
+urls.Homepage = "https://github.com/ecmwf/pyfdb"
+urls.Issues = "https://github.com/ecmwf/pyfdb/issues"
+urls.Repository = "https://github.com/ecmwf/pyfdb"
+
+requires-python = ">=3.9"
+
+dependencies = [
+  "cffi",
+  "findlibs",
+  "pyeccodes"
+]
+
+optional-dependencies.tests = [
+  "pytest",
+  "pytest-cov",
+  "pytest-flakes",
+]
+
+[tool.setuptools.packages.find]
+where = ["src", "tests"]
+
+[tool.setuptools.package-data]
+pyfdb = ["processed_fdb.h"]
+
 [tool.black]
 line-length = 120
 

setup.py

@@ -1,27 +1,11 @@
 import io
 import re
 
-from setuptools import find_packages, setup
+from setuptools import setup
 
-__version__ = re.search(
-    r'__version__\s*=\s*[\'"]([^\'"]*)[\'"]', io.open("pyfdb/version.py", encoding="utf_8_sig").read()
-).group(1)
+def find_version():
+    return re.search(
+        r'__version__\s*=\s*[\'"]([^\'"]*)[\'"]', io.open("src/pyfdb/version.py", encoding="utf_8_sig").read()
+    ).group(1)
 
-setup(
-    name="pyfdb",
-    version=__version__,
-    description="Python interface to FDB",
-    url="https://github.com/ecmwf/pyfdb",
-    author="ECMWF",
-    author_email="software.support@ecmwf.int",
-    packages=find_packages(exclude=("docs", "tests")),
-    include_package_data=True,
-    tests_require=[
-        "pytest",
-        "pytest-cov",
-        "pytest-flakes",
-    ],
-    test_suite="tests",
-    install_requires=["cffi", "findlibs", "pyeccodes", "packaging"],
-    zip_safe=False,
-)
+setup( version=find_version())