diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000..7e1499d
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,4 @@
+[flake8]
+extend-ignore = E203,E501,E701
+max-line-length = 88
+exclude = [".eggs"]
diff --git a/.gitignore b/.gitignore
index e6cfb60..f256bd1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 !.gitignore
 !.github
 !.readthedocs.yaml
+!.flake8
 
 # Byte / compiled / optimized
 *.py[cod]
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e9ce193..3f674e9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,7 +20,7 @@ To be sure all HDF5 files are compliant with the latest standard
 
 ```bash
 pip install -e .[dev]
-./converted/generate.sh
+./nxxas_examples/generate.sh
 ```
 
 ### Linting
diff --git a/doc/conf.py b/doc/conf.py
index 65445f0..2c6734c 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -6,13 +6,15 @@
 
 import os
 import sys
-from pynxxas import __version__ as release
+from importlib.metadata import version as get_version
+
+release = get_version("pynxxas")
 
 sys.path.append(os.path.abspath("./_ext"))
 
 project = "pynxxas"
 version = ".".join(release.split(".")[:2])
-copyright = "2024-present, ESRF"
+copyright = "2024-2025, ESRF"
 author = "ESRF"
 docstitle = f"{project} {version}"
 
diff --git a/pyproject.toml b/pyproject.toml
index 14ad32c..63a9125 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,4 +2,62 @@
 requires = [
     "setuptools>=46.4"
 ]
-build-backend = "setuptools.build_meta"
\ No newline at end of file
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pynxxas"
+version = "0.0.1a"
+authors = [{name = "ESRF", email = "dau-pydev@esrf.fr"}]
+description = "Read and write XAS data in NeXus format"
+readme = {file = "README.md", content-type = "text/markdown"}
+license = {file = "LICENSE"}
+classifiers = [
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+]
+requires-python = ">=3.8"
+dependencies = [
+    "numpy",
+    "h5py",
+    "pydantic >=2.6",
+    "pint >=0.24.4",
+    "charset_normalizer",
+]
+
+[project.urls]
+Homepage = "https://github.com/XraySpectroscopy/pynxxas/"
+Documentation = "https://pynxxas.readthedocs.io/"
+Repository = "https://github.com/XraySpectroscopy/pynxxas/"
+Issues = "https://github.com/XraySpectroscopy/pynxxas/issues"
+Changelog = "https://github.com/XraySpectroscopy/pynxxas/-/blob/main/CHANGELOG.md"
+
+[project.optional-dependencies]
+test = [
+    "pytest >=7",
+]
+dev = [
+    "pynxxas[test]",
+    "black >=22",
+    "flake8 >=4",
+    "xraylarch",
+]
+doc = [
+    "pynxxas[test]",
+    "sphinx >=4.5",
+    "sphinx-autodoc-typehints >=1.16",
+    "pydata-sphinx-theme < 0.15",
+    "xraylarch",
+]
+
+[tool.setuptools]
+package-dir = { "" = "src" }
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.coverage.run]
+omit = ['*/tests/*']
+
+[project.scripts]
+nxxas-convert = "pynxxas.apps.nxxas_convert:main"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index f24dd09..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,70 +0,0 @@
-[metadata]
-name = pynxxas
-version = attr: pynxxas.__version__
-author = ESRF
-author_email = wout.de_nolf@esrf.fr
-description = Read and write XAS data in NeXus
-long_description = file: README.md
-long_description_content_type = text/markdown
-license = MIT
-url = https://github.com/XraySpectroscopy/pynxxas/
-project_urls =
-    Source = https://github.com/XraySpectroscopy/pynxxas/
-    Documentation = https://pynxxas.readthedocs.io/
-    Tracker = https://github.com/XraySpectroscopy/pynxxas/issues/
-classifiers =
-    Intended Audience :: Science/Research
-    License :: OSI Approved :: MIT License
-    Programming Language :: Python :: 3
-
-[options]
-package_dir=
-        =src
-packages=find:
-python_requires = >=3.9
-install_requires =
-    numpy
-    h5py
-    pydantic >=2.6
-    pint >=0.24.4
-    charset_normalizer
-
-[options.packages.find]
-where=src
-
-[options.extras_require]
-test =
-    pytest >=7
-dev =
-    %(test)s
-    black >=22
-    flake8 >=4
-    xraylarch
-doc =
-    %(test)s
-    sphinx >=4.5
-    sphinx-autodoc-typehints >=1.16
-    pydata-sphinx-theme < 0.15
-    xraylarch
-
-[options.entry_points]
-console_scripts =
-    nxxas-convert=pynxxas.apps.nxxas_convert:main
-
-# E501 (line too long) ignored for now
-# E203 and W503 incompatible with black formatting (https://black.readthedocs.io/en/stable/compatible_configs.html#flake8)
-[flake8]
-ignore = E501, E203, W503
-max-line-length = 88
-exclude =
-    .eggs
-
-# E402 (module import not at top of file) ignored
-[flake8_nb]
-ignore = E501, E203, W503, E402
-max-line-length = 88
-
-[coverage:run]
-omit =
-    setup.py
-    */tests/*
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 1abbd06..0000000
--- a/setup.py
+++ /dev/null
@@ -1,4 +0,0 @@
-import setuptools
-
-if __name__ == "__main__":
-    setuptools.setup()
diff --git a/src/pynxxas/__init__.py b/src/pynxxas/__init__.py
index 3047ba3..e69de29 100644
--- a/src/pynxxas/__init__.py
+++ b/src/pynxxas/__init__.py
@@ -1 +0,0 @@
-__version__ = "0.0.1a"