From c44647f5727cbdadba667563fd86f97f7c6537e9 Mon Sep 17 00:00:00 2001
From: Florian Blanchet <florian.blanchet.supop@gmail.com>
Date: Sun, 2 Apr 2023 20:12:40 +0300
Subject: [PATCH] feat(build): hatch support

Behavior is compatible with PEPs since hatch v1.2.0.
---
 incipyt/__main__.py              |  2 +-
 incipyt/tools/__init__.py        |  2 +-
 incipyt/tools/pep517/__init__.py |  1 +
 incipyt/tools/pep517/hatch.py    | 36 ++++++++++++++++++++++++++++++++
 4 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 incipyt/tools/pep517/hatch.py

diff --git a/incipyt/__main__.py b/incipyt/__main__.py
index 2c8c9c1b..2de8c6b9 100644
--- a/incipyt/__main__.py
+++ b/incipyt/__main__.py
@@ -53,7 +53,7 @@ def choice_callback(_ctx, _param, _choice):
     required=True,
     show_default=True,
     default="Setuptools",
-    type=click.Choice(["Setuptools", "Flit", "PDM", "Poetry"], case_sensitive=False),
+    type=click.Choice(["Setuptools", "Flit", "Hatch", "PDM", "Poetry"], case_sensitive=False),
     callback=choice_callback,
     help="Build system to use for building wheel and source distributions.",
 )
diff --git a/incipyt/tools/__init__.py b/incipyt/tools/__init__.py
index cee313cd..6e7cbc91 100644
--- a/incipyt/tools/__init__.py
+++ b/incipyt/tools/__init__.py
@@ -1,6 +1,6 @@
 from incipyt.tools.base import Tool
 from incipyt.tools.git import Git
 from incipyt.tools.license import License
-from incipyt.tools.pep517 import PDM, Flit, Setuptools
+from incipyt.tools.pep517 import PDM, Flit, Hatch, Setuptools
 from incipyt.tools.poetry import Poetry
 from incipyt.tools.venv import Venv
diff --git a/incipyt/tools/pep517/__init__.py b/incipyt/tools/pep517/__init__.py
index a252d2be..3a4bce0e 100644
--- a/incipyt/tools/pep517/__init__.py
+++ b/incipyt/tools/pep517/__init__.py
@@ -1,4 +1,5 @@
 from incipyt.tools.pep517.base import BuildSystem
 from incipyt.tools.pep517.flit import Flit
+from incipyt.tools.pep517.hatch import Hatch
 from incipyt.tools.pep517.pdm import PDM
 from incipyt.tools.pep517.setuptools import Setuptools
diff --git a/incipyt/tools/pep517/hatch.py b/incipyt/tools/pep517/hatch.py
new file mode 100644
index 00000000..fdf36f20
--- /dev/null
+++ b/incipyt/tools/pep517/hatch.py
@@ -0,0 +1,36 @@
+from incipyt import project, signals
+from incipyt._internal.dumpers import Toml
+from incipyt.tools import pep517
+
+
+class Hatch(pep517.BuildSystem):
+    """Scripts to add Hatch to :class:`incipyt.project._Structure`."""
+
+    def add_to_structure(self):
+        """Add hatch configuration to `project.structure`.
+
+        :file:`pyptoject.toml`
+
+        .. code-block::
+
+            [build-system]
+            build-backend = "hatchling.build"
+            requires = ["hatchling>=1.3.0"]
+
+        If this configuration cannot be populate like that, an error is raised.
+
+        :raises RuntimeError: If a build-system is already setup in pyproject.toml.
+        """
+        super().add_to_structure()
+
+        pyproject = project.structure.get_config_dict(Toml("pyproject.toml"))
+
+        if "build-system" in pyproject:
+            raise RuntimeError("Build system already registered.")
+
+        pyproject["build-system"] = {
+            "build-backend": "hatchling.build",
+            "requires": ["hatchling>=1.3.0"],
+        }
+
+        signals.build_dependency.emit(dep_name="hatch>=1.2.0")