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Add support for hatch-build#73

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Merged
timkpaine merged 1 commit intomainfromtkp/cli
Nov 9, 2025
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14 changes: 14 additions & 0 deletionsREADME.md
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Expand Up@@ -83,6 +83,20 @@ cmake_env_args = {} # env-specific cmake args to pass
include_flags = {} # include flags to pass -D
```

### CLI

`hatch-cpp` is integrated with [`hatch-build`](https://github.com/python-project-templates/hatch-build) to allow easy configuration of options via command line:

```bash
hatch-build \
-- \
--verbose \
--platform linux \
--vcpkg.vcpkg a/path/to/vcpkg.json \
--libraries.0.binding pybind11 \
--libraries.0.include-dirs cpp,another-dir
```

### Environment Variables

`hatch-cpp` will respect standard environment variables for compiler control.
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4 changes: 4 additions & 0 deletionshatch_cpp/plugin.py
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Expand Up@@ -7,6 +7,7 @@
from sys import platform as sys_platform, version_info
from typing import Any

from hatch_build import parse_extra_args_model
from hatchling.builders.hooks.plugin.interface import BuildHookInterface

from .config import HatchCppBuildConfig, HatchCppBuildPlan
Expand DownExpand Up@@ -52,6 +53,9 @@ def initialize(self, version: str, build_data: dict[str, Any]) -> None:
# Instantiate builder
build_plan = build_plan_class(**config.model_dump())

# Parse override args
parse_extra_args_model(build_plan)

# Generate commands
build_plan.generate()

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46 changes: 46 additions & 0 deletionshatch_cpp/tests/test_hatch_build.py
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@@ -0,0 +1,46 @@
from os import listdir
from pathlib import Path
from shutil import rmtree
from subprocess import check_call
from sys import modules, path, platform


class TestHatchBuild:
def test_hatch_build(self):
project = "test_project_hatch_build"

rmtree(f"hatch_cpp/tests/{project}/project/extension.so", ignore_errors=True)
rmtree(f"hatch_cpp/tests/{project}/project/extension.pyd", ignore_errors=True)
modules.pop("project", None)
modules.pop("project.extension", None)

# compile
check_call(
[
"hatch-build",
"--hooks-only",
"--",
"--libraries.0.name=project/extension",
"--libraries.0.sources=cpp/project/basic.cpp",
"--libraries.0.include-dirs=cpp",
"--libraries.0.binding=nanobind",
],
cwd=f"hatch_cpp/tests/{project}",
)

# assert built

if project == "test_project_limited_api" and platform != "win32":
assert "extension.abi3.so" in listdir(f"hatch_cpp/tests/{project}/project")
else:
if platform == "win32":
assert "extension.pyd" in listdir(f"hatch_cpp/tests/{project}/project")
else:
assert "extension.so" in listdir(f"hatch_cpp/tests/{project}/project")

# import
here = Path(__file__).parent / project
path.insert(0, str(here))
import project.extension

assert project.extension.hello() == "A string"
2 changes: 1 addition & 1 deletionhatch_cpp/tests/test_project_cmake/pyproject.toml
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Expand Up@@ -29,7 +29,7 @@ packages = ["project"]
packages = ["project"]

[tool.hatch.build.hooks.hatch-cpp]
verbose =true
verbose =false

[tool.hatch.build.hooks.hatch-cpp.cmake]
root = "CMakeLists.txt"
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@@ -0,0 +1,2 @@
#include "project/basic.hpp"

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@@ -0,0 +1,7 @@
#pragma once
#include <nanobind/nanobind.h>
#include <nanobind/stl/string.h>

NB_MODULE(extension, m) {
m.def("hello", []() { return "A string"; });
}
Empty file.
36 changes: 36 additions & 0 deletionshatch_cpp/tests/test_project_hatch_build/pyproject.toml
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@@ -0,0 +1,36 @@
[build-system]
requires = ["hatchling>=1.20"]
build-backend = "hatchling.build"

[project]
name = "hatch-cpp-test-project-nanobind"
description = "Basic test project for hatch-cpp"
version = "0.1.0"
requires-python = ">=3.9"
dependencies = [
"hatchling>=1.20",
"hatch-cpp",
]

[tool.hatch.build]
artifacts = [
"project/*.dll",
"project/*.dylib",
"project/*.so",
]

[tool.hatch.build.sources]
src = "/"

[tool.hatch.build.targets.sdist]
packages = ["project"]

[tool.hatch.build.targets.wheel]
packages = ["project"]

[tool.hatch.build.hooks.hatch-cpp]
verbose = true
libraries = [
# {name = "project/extension", sources = ["cpp/project/basic.cpp"], include-dirs = ["cpp"], binding = "nanobind"},
{name = "wrong", sources = ["wrong"], include-dirs = ["wrong"], binding = "generic"},
]
6 changes: 3 additions & 3 deletionshatch_cpp/toolchains/cmake.py
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Expand Up@@ -3,7 +3,7 @@
from os import environ
from pathlib import Path
from sys import version_info
from typing import Any, Dict, Optional
from typing import Any, Dict, Optional, Union

from pydantic import BaseModel, Field

Expand All@@ -23,15 +23,15 @@


class HatchCppCmakeConfiguration(BaseModel):
root: Path
root:Optional[Path] = None
build: Path = Field(default_factory=lambda: Path("build"))
install: Optional[Path] = Field(default=None)

cmake_arg_prefix: Optional[str] = Field(default=None)
cmake_args: Dict[str, str] = Field(default_factory=dict)
cmake_env_args: Dict[Platform, Dict[str, str]] = Field(default_factory=dict)

include_flags: Optional[Dict[str,Any]] = Field(default=None)
include_flags: Optional[Dict[str,Union[str, int, float, bool]]] = Field(default=None)

def generate(self, config) -> Dict[str, Any]:
commands = []
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6 changes: 3 additions & 3 deletionspyproject.toml
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Expand Up@@ -9,7 +9,7 @@ description = "Hatch plugin for C++ builds"
readme = "README.md"
license = { text = "Apache-2.0" }
version = "0.1.9"
requires-python = ">=3.9"
requires-python = ">=3.10"
keywords = [
"hatch",
"python",
Expand All@@ -25,7 +25,6 @@ classifiers = [
"Programming Language :: Python :: Implementation :: CPython",
"Programming Language :: Python :: Implementation :: PyPy",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
"Programming Language :: Python :: 3.12",
Expand All@@ -35,6 +34,7 @@ classifiers = [

dependencies = [
"hatchling>=1.20",
"hatch-build>=0.4,<0.5",
"pydantic",
]

Expand All@@ -45,7 +45,7 @@ develop = [
"check-manifest",
"codespell>=2.4,<2.5",
"hatchling",
"hatch-build",
"hatch-build>=0.3.2",
"mdformat>=0.7.22,<1.1",
"mdformat-tables>=1",
"pytest",
Expand Down
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