diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..f58e6a0
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,29 @@
+# http://editorconfig.org
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+charset = utf-8
+end_of_line = lf
+max_line_length = 88
+
+[*.{json,yml,yaml,js,jsx,vue,toml}]
+indent_size = 2
+
+[*.{html,htm,svg,xml}]
+indent_size = 2
+max_line_length = 120
+
+[*.{css,scss}]
+indent_size = 2
+
+[LICENSE]
+insert_final_newline = false
+
+[*.{md,markdown}]
+indent_size = 2
+max_line_length = 80
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..b6440f7
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+github:
+  - codingjoe
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..7df6849
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+- package-ecosystem: pip
+  directory: "/"
+  schedule:
+    interval: weekly
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: weekly
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..922705c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,63 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+
+  dist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+      - run: python -m pip install --upgrade pip build wheel twine
+      - run: python -m build --sdist --wheel
+      - run: python -m twine check dist/*
+      - uses: actions/upload-artifact@v3
+        with:
+          path: dist/*
+
+  lint:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        lint-command:
+          - bandit -r . -x ./tests
+          - black --check --diff .
+          - flake8 .
+          - isort --check-only --diff .
+          - pydocstyle .
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+          cache: 'pip'
+          cache-dependency-path: 'linter-requirements.txt'
+      - run: python -m pip install -r linter-requirements.txt
+      - run: ${{ matrix.lint-command }}
+
+  pytest:
+    needs:
+      - lint
+    strategy:
+      matrix:
+        python-version:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+          - "3.11"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - run: python -m pip install .[test]
+    - run: python -m pytest
+    - uses: codecov/codecov-action@v3
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..57fb04f
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,21 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+
+  PyPi:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v4
+      with:
+        python-version: "3.x"
+    - run: python -m pip install --upgrade pip build wheel twine
+    - run: python -m build --sdist --wheel
+    - run: python -m twine upload dist/*
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 68bc17f..1fd15d0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -158,3 +158,7 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+
+# flit-scm
+_version.py
diff --git a/README.md b/README.md
index f57c77e..9800dc1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,37 @@
-# flit-sass
+# Flit Sass
+
+[![PyPi Version](https://img.shields.io/pypi/v/flit-sass.svg)](https://pypi.python.org/pypi/flit-sass/)
+[![Test Coverage](https://codecov.io/gh/codingjoe/flit-sass/branch/main/graph/badge.svg)](https://codecov.io/gh/codingjoe/flit-sass)
+[![GitHub License](https://img.shields.io/github/license/codingjoe/flit-sass)](https://raw.githubusercontent.com/codingjoe/flit-sass/main/LICENSE)
+
 Compile Sass/SCSS files to CSS during build time.
+
+_"Binary files should never be committed to a repository to promote transparency and security."_
+That is why this project was created.
+
+### Usage
+
+Simple, just add `flit-sass` to your `pyproject.toml`
+build-system requirements and set the `build-backend`:
+
+```toml
+# pyproject.toml
+[build-system]
+requires = [
+  "flit-sass[scm]",  # [scm] is optional
+  # …others, like wheel, etc.
+]
+# using flit-core as a base build-backend
+build-backend = "flit_sass.core"
+# or using flit-scm as a base build-backend for git-based versioning
+build-backend = "flit_sass.scm"
+# To use use flit-scm, you will need to include the optional dependency above.
+
+[tool.flit_sass]
+dirs = { "package/static/scss" = "package/static/css" }
+output_style = "compressed"  # optional: nested, expanded, compact, compressed
+```
+
+If you ship wheels, those will include the compiled `.css` files.
+
+**That's it!**
diff --git a/flit_sass/__init__.py b/flit_sass/__init__.py
new file mode 100644
index 0000000..8831aa0
--- /dev/null
+++ b/flit_sass/__init__.py
@@ -0,0 +1 @@
+"""Compile Sass/SCSS files to CSS during build time."""
diff --git a/flit_sass/core.py b/flit_sass/core.py
new file mode 100644
index 0000000..826a117
--- /dev/null
+++ b/flit_sass/core.py
@@ -0,0 +1,14 @@
+from flit_core import buildapi
+from flit_core.buildapi import *  # noqa
+
+from flit_sass.utils import compile_sass
+
+
+def build_wheel(wheel_directory, config_settings=None, metadata_directory=None):
+    compile_sass()
+    return buildapi.build_wheel(wheel_directory, config_settings, metadata_directory)
+
+
+def build_editable(wheel_directory, config_settings=None, metadata_directory=None):
+    compile_sass()
+    return buildapi.build_editable(wheel_directory, config_settings, metadata_directory)
diff --git a/flit_sass/scm.py b/flit_sass/scm.py
new file mode 100644
index 0000000..b87ba53
--- /dev/null
+++ b/flit_sass/scm.py
@@ -0,0 +1,3 @@
+from flit_scm import *  # noqa
+
+from .core import *  # noqa
diff --git a/flit_sass/utils.py b/flit_sass/utils.py
new file mode 100644
index 0000000..ec83807
--- /dev/null
+++ b/flit_sass/utils.py
@@ -0,0 +1,27 @@
+try:
+    import tomllib
+except ImportError:
+    import tomli as tomllib
+
+import sass
+
+
+def compile_sass():
+    """Compile Sass/SCSS files."""
+    try:
+        with open("pyproject.toml", "rb") as f:
+            pyproject = tomllib.load(f)
+    except OSError:
+        pass  # Do nothing if unable to access `pyproject.toml`
+    else:
+        try:
+            config = pyproject["tool"]["flit-sass"]
+        except KeyError:
+            pass  # Do nothing if `setuptools_scm` is not configured in `pyproject.toml`
+        else:
+            print("\33[1m* Compiling Sass/SCSS files...\33[0m")
+            for dirname in config.get("dirs", {}).items():
+                sass.compile(
+                    dirname=dirname,
+                    output_style=config.get("output_style", "compressed"),
+                )
diff --git a/linter-requirements.txt b/linter-requirements.txt
new file mode 100644
index 0000000..d132dc9
--- /dev/null
+++ b/linter-requirements.txt
@@ -0,0 +1,5 @@
+bandit==1.7.5
+black==23.9.1
+flake8==6.1.0
+isort==5.12.0
+pydocstyle[toml]==6.3.0
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..be47453
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,81 @@
+[build-system]
+requires = ["flit-scm", "wheel"]
+build-backend = "flit_scm:buildapi"
+
+[project]
+name = "flit-sass"
+authors = [
+  { name = "Johannes Maron", email = "johannes@maron.family" },
+]
+readme = "README.md"
+license = { file = "LICENSE" }
+keywords = ["flit", "pep518", "build", "packaging", "sass"]
+dynamic = ["version", "description"]
+classifiers = [
+  "Development Status :: 5 - Production/Stable",
+  "Programming Language :: Python",
+  "Environment :: Web Environment",
+  "License :: OSI Approved :: BSD License",
+  "Intended Audience :: Developers",
+  "Operating System :: OS Independent",
+  "Topic :: Software Development",
+  "Topic :: Software Development :: Libraries :: Python Modules",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3 :: Only",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+]
+requires-python = ">=3.8"
+dependencies = [
+  "flit-core~=3.5",
+  "libsass~=0.21",
+  "tomli; python_version < '3.11'",
+]
+
+[project.optional-dependencies]
+test = [
+  "pytest",
+  "pytest-cov",
+  "flit-scm",
+  "build",
+  "wheel",
+]
+scm = [
+  "flit-scm",
+]
+
+[project.urls]
+Project-URL = "https://github.com/codingjoe/flit-sass"
+Changelog = "https://github.com/codingjoe/flit-sass/releases"
+
+[tool.flit.module]
+name = "flit_sass"
+
+[tool.setuptools_scm]
+write_to = "flit_sass/_version.py"
+
+[tool.pytest.ini_options]
+minversion = "6.0"
+addopts = "--cov --tb=short -rxs"
+testpaths = ["tests"]
+
+[tool.coverage.run]
+source = ["flit_sass"]
+omit = ["flit_sass/_version.py"]
+
+[tool.coverage.report]
+show_missing = true
+
+[tool.isort]
+atomic = true
+line_length = 88
+known_first_party = "flit_sass, tests"
+include_trailing_comma = true
+default_section = "THIRDPARTY"
+combine_as_imports = true
+
+[tool.pydocstyle]
+add_ignore = "D1"
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..6f60592
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,4 @@
+[flake8]
+max-line-length=88
+select = C,E,F,W,B,B950
+ignore = E203, E501, W503, E731
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..848737c
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,68 @@
+import contextlib
+import os
+import tempfile
+from pathlib import Path
+
+import pytest
+
+
+@pytest.fixture()
+def package():
+    with tempfile.TemporaryDirectory() as tmpdirname:
+        temp_dir = Path(tmpdirname)
+        pyproject_toml = temp_dir / "pyproject.toml"
+        pyproject_toml.write_text(
+            "[project]\n"
+            'name = "package"\n'
+            'version = "0.1.0"\n'
+            'description = "A package"\n'
+            "[build-system]\n"
+            'requires = ["flit_core", "libsass"]\n'
+            'build-backend = "flit_sass.core"\n'
+            "[tool.flit-sass]\n"
+            'dirs = { "package/static/sass" = "package/static/css" }\n'
+        )
+        (temp_dir / "package").mkdir(parents=True)
+        (temp_dir / "package" / "__init__.py").touch()
+
+        with chdir(temp_dir):
+            yield temp_dir
+
+
+@pytest.fixture()
+def package_scm():
+    with tempfile.TemporaryDirectory() as tmpdirname:
+        temp_dir = Path(tmpdirname)
+        pyproject_toml = temp_dir / "pyproject.toml"
+        pyproject_toml.write_text(
+            "[project]\n"
+            'name = "package"\n'
+            'description = "A package"\n'
+            'dynamic = ["version"]\n'
+            "[build-system]\n"
+            'requires = ["flit_core", "libsass", "flit_scm"]\n'
+            'build-backend = "flit_sass.scm"\n'
+            "[tool.setuptools_scm]\n"
+            'write_to = "package/_version.py"\n'
+            'fallback_version = "0.1.0"\n'
+            "[tool.flit-sass]\n"
+            'dirs = { "package/static/sass" = "package/static/css" }\n'
+            'output_style = "nested"\n'
+        )
+        (temp_dir / "package").mkdir(parents=True)
+        (temp_dir / "package" / "__init__.py").touch()
+        (temp_dir / "package" / "_version.py").write_text('version = "0.1.0"\n')
+
+        with chdir(temp_dir):
+            yield temp_dir
+
+
+@contextlib.contextmanager
+def chdir(path):
+    """Context manager to temporarily change the working directory."""
+    cwd = Path.cwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(cwd)
diff --git a/tests/test_core.py b/tests/test_core.py
new file mode 100644
index 0000000..fa5fb45
--- /dev/null
+++ b/tests/test_core.py
@@ -0,0 +1,92 @@
+import os
+import subprocess  # nosec
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).parent.parent
+
+
+def test_build_sdist(package):
+    """Test that build_sdist() compiles Sass files."""
+    # Create a dummy SCSS file
+    scss_file = package / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    output = subprocess.check_output(
+        [sys.executable, "-m", "build", "--sdist"],
+        cwd=package,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}"},
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/CSSS files..." not in output
+
+
+def test_build_wheel(package):
+    """Test that build_wheel() compiles Sass files."""
+    # Create a dummy SCSS file
+    scss_file = package / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    output = subprocess.check_output(
+        [sys.executable, "-m", "build", "--wheel"],
+        cwd=package,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}"},
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/SCSS files..." in output
+
+
+def test_editable_editable(package):
+    """Test that build_editable() compiles Sass files."""
+    # Create a dummy SCSS file
+    scss_file = package / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    packages_dir = package / "packages"
+    packages_dir.mkdir(parents=True)
+
+    output = subprocess.check_output(
+        [
+            sys.executable,
+            "-m",
+            "pip",
+            "install",
+            "--target",
+            str(packages_dir),
+            "-v",
+            "-e",
+            ".",
+        ],
+        cwd=package,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}", "PEP517_BACKEND_PATH": str(ROOT)},
+        stderr=subprocess.STDOUT,
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/SCSS files..." in output
diff --git a/tests/test_scm.py b/tests/test_scm.py
new file mode 100644
index 0000000..c99ab6c
--- /dev/null
+++ b/tests/test_scm.py
@@ -0,0 +1,92 @@
+import os
+import subprocess  # nosec
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).parent.parent
+
+
+def test_build_sdist(package_scm):
+    """Test that build_sdist() compiles Sass files."""
+    # Create a dummy SCSS file
+    scss_file = package_scm / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    output = subprocess.check_output(
+        [sys.executable, "-m", "build", "--sdist"],
+        cwd=package_scm,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}"},
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/CSSS files..." not in output
+
+
+def test_build_wheel(package_scm):
+    """Test that build_wheel() compiles Sass files."""
+    # Create a dummy .po file
+    scss_file = package_scm / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    output = subprocess.check_output(
+        [sys.executable, "-m", "build", "--wheel"],
+        cwd=package_scm,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}"},
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/SCSS files..." in output
+
+
+def test_editable_editable(package_scm):
+    """Test that build_editable() compiles Sass files."""
+    # Create a dummy .po file
+    scss_file = package_scm / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    packages_dir = package_scm / "packages"
+    packages_dir.mkdir(parents=True)
+
+    output = subprocess.check_output(
+        [
+            sys.executable,
+            "-m",
+            "pip",
+            "install",
+            "--target",
+            str(packages_dir),
+            "-v",
+            "-e",
+            ".",
+        ],
+        cwd=package_scm,
+        env={**os.environ, "PYTHONPATH": f".:{ROOT}", "PEP517_BACKEND_PATH": str(ROOT)},
+        stderr=subprocess.STDOUT,
+    )
+
+    # Check that the Sass compilation was logged
+    assert b"* Compiling Sass/SCSS files..." in output
diff --git a/tests/test_utils.py b/tests/test_utils.py
new file mode 100644
index 0000000..4f928ff
--- /dev/null
+++ b/tests/test_utils.py
@@ -0,0 +1,39 @@
+import pytest
+import sass
+
+import flit_sass.utils
+
+
+def test_compile_sass(capsys, package):
+    scss_file = package / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        $color: #abc;
+        body {
+            color: $color;
+        }
+        """
+    )
+
+    flit_sass.utils.compile_sass()
+
+    assert (package / "package/static/css/styles.css").exists()
+    captured = capsys.readouterr()
+    assert captured.out == "\x1b[1m* Compiling Sass/SCSS files...\x1b[0m\n"
+    assert captured.err == ""
+
+
+def test_compile_sass__invalid(capsys, package):
+    scss_file = package / "package/static/sass/styles.scss"
+    scss_file.parent.mkdir(parents=True)
+    scss_file.write_text(
+        r"""
+        body {
+            color: $var-does-not-exist;
+        }
+        """
+    )
+
+    with pytest.raises(sass.CompileError):
+        flit_sass.utils.compile_sass()