diff --git a/skore/ci/pip-compile.sh b/skore/ci/pip-compile.sh
index f73a23f35..b6d48e615 100644
--- a/skore/ci/pip-compile.sh
+++ b/skore/ci/pip-compile.sh
@@ -1,9 +1,12 @@
 #!/bin/bash
 #
 # This script compiles all the `test-requirements.txt` files, based on combinations of
-# `python` and `scikit-learn` versions.
+# `python` and `scikit-learn` versions. These combinations mirror those defined in the
+# GitHub `backend` workflow.
 #
-# The combinations mirror those defined in the GitHub `backend` workflow.
+# You can pass any piptools parameter:
+#
+#     $ bash pip-compile.sh --upgrade
 #
 
 CWD="$PWD"
diff --git a/skore/hatch/metadata.py b/skore/hatch/metadata.py
index c3bc1c473..99b93891b 100644
--- a/skore/hatch/metadata.py
+++ b/skore/hatch/metadata.py
@@ -1,14 +1,8 @@
-import shutil
 from pathlib import Path
-from contextlib import ExitStack, suppress
 
 from hatchling.metadata.plugin.interface import MetadataHookInterface
 
 
-# @dataclasses.dataclass
-# class Configuration:
-
-
 def readlines(filepath):
     with open(filepath) as file:
         yield from file
@@ -16,37 +10,62 @@ def readlines(filepath):
 
 class MetadataHook(MetadataHookInterface):
     def update(self, metadata):
-        license_path = Path(self.root, self.config["license-file"])
-        license = license_path.read_text(encoding="utf-8")
-        readme = Path(self.root, self.config["readme-file"]).read_text(encoding="utf-8")
-        version = self.config["version-default"]
+        """
+        Notes
+        -----
+        Example of configuration:
+
+            {
+                'path': 'hatch/metadata.py',
+                'license': {'file': '../LICENSE'},
+                'readme': {'file': '../README.md'},
+                'version-default': '0.0.0+unknown',
+                'dependencies': {'file': 'requirements.in'},
+                'optional-dependencies': {
+                    'test': {'file': 'test-requirements.in'},
+                    'sphinx': {'file': 'sphinx-requirements.in'},
+                }
+            }
+        """
+
+        # Retrieve LICENCE from root files
+        license_filepath = self.config["license"]["file"]
+        license = Path(self.root, license_filepath).read_text(encoding="utf-8")
+
+        # Copy LICENCE file in `sdist`
+        with open(Path(self.root, "LICENSE"), "w") as f:
+            f.write(license)
 
-        with suppress(FileNotFoundError):
+        # Retrieve README from root files
+        readme_filepath = self.config["readme"]["file"]
+        readme = Path(self.root, readme_filepath).read_text(encoding="utf-8")
+
+        # Retrieve VERSION from file created by the CI
+        try:
             version = Path(self.root, "VERSION.txt").read_text(encoding="utf-8")
+        except FileNotFoundError:
+            version = self.config["version-default"]
+
+        # Retrieve dependencies from requirements.in
+        dependencies_filepath = self.config["dependencies"]["file"]
+        dependencies = list(map(str.strip, readlines(dependencies_filepath)))
+
+        # Retrieve optional dependencies from *-requirements.in
+        optional_dependencies_label_to_filepath = self.config["optional-dependencies"]
+        optional_dependencies = {}
 
+        for label, filepath in optional_dependencies_label_to_filepath:
+            optional_dependencies_filepath = filepath["file"]
+            optional_dependencies[label] = list(
+                map(
+                    str.strip,
+                    readlines(optional_dependencies_filepath),
+                )
+            )
+
+        # Update metadata
         metadata["license"] = {"text": license, "content-type": "text/plain"}
         metadata["readme"] = {"text": readme, "content-type": "text/markdown"}
         metadata["version"] = version
-
-        license_dest = Path(self.root, license_path.name)
-        shutil.copy2(license_path, license_dest)
-
-        # {
-        #     'path': 'hatch/metadata.py',
-        #     'license-file': '../LICENSE',
-        #     'readme-file': '../README.md',
-        #     'version-default': '0.0.0+unknown',
-        #     'dependencies': {'file': 'requirements.in'},
-        #     'optional-dependencies': {
-        #         'test': {'file': 'test-requirements.in'},
-        #         'sphinx': {'file': 'sphinx-requirements.in'}
-        #     }
-        # }
-
-        metadata["dependencies"] = list(
-            map(str.strip, readlines(self.config["dependencies"]))
-        )
-        metadata["optional-dependencies"] = {
-            label: list(map(str.strip, readlines(filepath)))
-            for label, filepath in self.config["optional-dependencies"].items()
-        }
+        Metadata["dependencies"] = dependencies
+        metadata["optional-dependencies"] = optional_dependencies
diff --git a/skore/pyproject.toml b/skore/pyproject.toml
index c300e1be3..7e8352315 100644
--- a/skore/pyproject.toml
+++ b/skore/pyproject.toml
@@ -45,12 +45,12 @@ build-backend = "hatchling.build"
 
 [tool.hatch.metadata.hooks.custom]
 path = "hatch/metadata.py"
-license-file = "../LICENSE"
-readme-file = "../README.md"
 version-default = "0.0.0+unknown"
-dependencies = "requirements.in"
-optional-dependencies.test = "test-requirements.in"
-optional-dependencies.sphinx = "sphinx-requirements.in"
+license = { "file" = "../LICENSE" }
+readme = { "file" = "../README.md" }
+dependencies = { "file" = "requirements.in" }
+optional-dependencies.test = { "file" = "test-requirements.in" }
+optional-dependencies.sphinx = { "file" = "sphinx-requirements.in" }
 
 [tool.hatch.build.targets.sdist]
 only-include = ["src/", "hatch/"]