diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..eedeea3
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,18 @@
+version: 2
+
+updates:
+
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "pip"
+    directory: "/cratedb_sqlparse_py"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..24d9958
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,88 @@
+---
+name: Python Tests
+
+on:
+  pull_request: ~
+  push:
+    branches: [ main ]
+
+  # Allow job to be triggered manually.
+  workflow_dispatch:
+
+  # Run job each night after CrateDB nightly has been published.
+  schedule:
+    - cron: '0 3 * * *'
+
+# Cancel in-progress jobs when pushing to the same branch.
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.workflow }}-${{ github.ref }}
+
+# Select Python grammar.
+defaults:
+  run:
+    working-directory: cratedb_sqlparse_py
+
+jobs:
+
+  tests:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ["ubuntu-latest"]
+        python-version: ["3.8", "3.12"]
+
+    env:
+      OS: ${{ matrix.os }}
+      PYTHON: ${{ matrix.python-version }}
+
+    # https://docs.github.com/en/actions/using-containerized-services/about-service-containers
+    services:
+      cratedb:
+        image: crate/crate:nightly
+        ports:
+          - 4200:4200
+          - 5432:5432
+        env:
+          CRATE_HEAP_SIZE: 4g
+
+    name: Python ${{ matrix.python-version }} on OS ${{ matrix.os }}
+    steps:
+
+    - name: Acquire sources
+      uses: actions/checkout@v4
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+        architecture: x64
+        cache: 'pip'
+        cache-dependency-path: 'pyproject.toml'
+
+    - name: Setup project
+      run: |
+
+        # `setuptools 0.64.0` adds support for editable install hooks (PEP 660).
+        # https://github.com/pypa/setuptools/blob/main/CHANGES.rst#v6400
+        pip install "setuptools>=64" --upgrade
+
+        # Install package in editable mode.
+        pip install --use-pep517 --prefer-binary --editable='.[develop,generate,test]'
+
+    - name: Run linter and software tests
+      run: |
+        poe check
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v4
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+      with:
+        files: ./coverage.xml
+        flags: unittests
+        env_vars: OS,PYTHON
+        name: codecov-umbrella
+        fail_ci_if_error: true
diff --git a/.gitignore b/.gitignore
index a21b9b3..d841e3a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -164,11 +164,3 @@ cython_debug/
 *.tokens
 *.interp
 *.g4
-
-
-*SqlBaseLexer.js
-*SqlBaseParser.js
-
-*SqlBaseLexer.py
-*SqlBaseParser.py
-*SqlBaseParserListener.py
diff --git a/CHANGES.md b/CHANGES.md
new file mode 100644
index 0000000..1a35e43
--- /dev/null
+++ b/CHANGES.md
@@ -0,0 +1,6 @@
+# Changelog
+
+## Unreleased
+
+## 2024/05/17 0.0.1
+- Initial release
diff --git a/README.md b/README.md
index 65bc3d2..aa3f1e4 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,10 @@
 # cratedb-sqlparse
 
 `Antlr4` is a parser generator for reading, processing and executing text, there are several
-target languages (Java, Python, JavaScript, Dart...) available. CrateDB uses the Java target.
+target languages (Java, Python, JavaScript, Dart) available. CrateDB uses the Java target.
 
 The repository holds libraries/packages created from some of those available languages, so
-far: `Python` and `JavaScript`.
-More might be added if needed in the future.
+far: `Python` and `JavaScript`. More might be added if needed in the future.
 
 These libraries allow you to parse Crate's SQL dialect without sending it to a CrateDB instance.
 
@@ -50,29 +49,23 @@ exceptions as error listener, dollar strings and any new one. See past commits t
 implemented in Python and Javascript, remember that CrateDB's SQLParser written in Java is the most
 complete and the default reference.
 
-## Building locally & using a different CrateDB version.
+## Building locally & using a different CrateDB version
 
 The generated parser is not uploaded to the repository since it's huge, to use the package locally or
 to build a different version use the build script.
 
-#### Clone the project
-`git clone git@github.com:crate/cratedb-sqlparse.git`
-
-#### Install the dependencies
-`pip install antlr4-python3-runtime requests`
-
-#### Run the build script
-`python3 setup_grammar.py`
+### Acquire sources
+```shell
+git clone git@github.com:crate/cratedb-sqlparse.git
+cd cratedb-sqlparse
+```
 
+### Install dependencies
+```
+pip install -r requirements.txt
+```
 
-> At the end of the build script `setup_grammar.py` the target and the CrateDB version can be modified.
->
-> ```python
-> if __name__ == '__main__':
->    version = '5.6.4'
->    target = Antlr4Target.python
->    download_cratedb_grammar(version)
->    compile_grammar(target)
->    patch_lexer(target)
->    set_version(target, version)
->```
+### Generate grammar files
+```shell
+poe generate
+```
diff --git a/cratedb_sqlparse_py/.gitignore b/cratedb_sqlparse_py/.gitignore
new file mode 100644
index 0000000..5244462
--- /dev/null
+++ b/cratedb_sqlparse_py/.gitignore
@@ -0,0 +1,3 @@
+*/generated_parser/SqlBaseLexer.py
+*/generated_parser/SqlBaseParser.py
+*/generated_parser/SqlBaseParserListener.py
diff --git a/cratedb_sqlparse_py/README.md b/cratedb_sqlparse_py/README.md
index 9c641da..f59de78 100644
--- a/cratedb_sqlparse_py/README.md
+++ b/cratedb_sqlparse_py/README.md
@@ -1,4 +1,4 @@
-# cratedb_sqlparse
+# CrateDB SQL Parser for Python
 
 This package provides utilities to validate and split SQL statements specifically designed for CrateDB.
 
@@ -36,3 +36,14 @@ print(select_query.tree)
 sqlparse('SUUULECT * FROM sys.shards')
 # cratedb_sqlparse.parser.parser.ParsingException: line1:0 mismatched input 'SUUULECT' expecting {'SELECT', 'DEALLOCATE', ...}
 ```
+
+
+## Development
+```shell
+git clone https://github.com/crate/cratedb-sqlparse
+cd cratedb-sqlparse/cratedb_sqlparse_py
+python3 -m venv .venv
+source .venv/bin/activate
+pip install --editable='.[develop,generate,release,test]'
+poe check
+```
diff --git a/cratedb_sqlparse_py/cratedb_sqlparse/parser.py b/cratedb_sqlparse_py/cratedb_sqlparse/parser.py
index ecc0caa..875511d 100644
--- a/cratedb_sqlparse_py/cratedb_sqlparse/parser.py
+++ b/cratedb_sqlparse_py/cratedb_sqlparse/parser.py
@@ -1,3 +1,5 @@
+from typing import List
+
 from antlr4 import InputStream, CommonTokenStream, Token
 from antlr4.error.ErrorListener import ErrorListener
 
@@ -90,7 +92,7 @@ def __repr__(self):
         return f'{self.__class__.__qualname__}<{self.query if len(self.query) < 15 else self.query[:15] + "..."}>'
 
 
-def sqlparse(query: str) -> list[Statement]:
+def sqlparse(query: str) -> List[Statement]:
     """
     Parses a string into SQL `Statement`.
     """
diff --git a/cratedb_sqlparse_py/poetry.lock b/cratedb_sqlparse_py/poetry.lock
deleted file mode 100644
index 399704b..0000000
--- a/cratedb_sqlparse_py/poetry.lock
+++ /dev/null
@@ -1,269 +0,0 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
-
-[[package]]
-name = "antlr4-python3-runtime"
-version = "4.13.1"
-description = "ANTLR 4.13.1 runtime for Python 3"
-optional = false
-python-versions = "*"
-files = [
-    {file = "antlr4-python3-runtime-4.13.1.tar.gz", hash = "sha256:3cd282f5ea7cfb841537fe01f143350fdb1c0b1ce7981443a2fa8513fddb6d1a"},
-    {file = "antlr4_python3_runtime-4.13.1-py3-none-any.whl", hash = "sha256:78ec57aad12c97ac039ca27403ad61cb98aaec8a3f9bb8144f889aa0fa28b943"},
-]
-
-[[package]]
-name = "antlr4-tools"
-version = "0.2.1"
-description = "Tools to run ANTLR4 tool and grammar interpreter/profiler"
-optional = false
-python-versions = "*"
-files = [
-    {file = "antlr4-tools-0.2.1.tar.gz", hash = "sha256:eabad95c7d6b2e15b9875f630e6695395f90ed557721aeef7844d5821ac1ca6a"},
-    {file = "antlr4_tools-0.2.1-py3-none-any.whl", hash = "sha256:71bfe6d5f856cbf69e69c4ad1750eb8f2c84e72b07780efabced6a8e5194f2e4"},
-]
-
-[package.dependencies]
-install-jdk = "*"
-
-[[package]]
-name = "certifi"
-version = "2024.2.2"
-description = "Python package for providing Mozilla's CA Bundle."
-optional = false
-python-versions = ">=3.6"
-files = [
-    {file = "certifi-2024.2.2-py3-none-any.whl", hash = "sha256:dc383c07b76109f368f6106eee2b593b04a011ea4d55f652c6ca24a754d1cdd1"},
-    {file = "certifi-2024.2.2.tar.gz", hash = "sha256:0569859f95fc761b18b45ef421b1290a0f65f147e92a1e5eb3e635f9a5e4e66f"},
-]
-
-[[package]]
-name = "charset-normalizer"
-version = "3.3.2"
-description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
-optional = false
-python-versions = ">=3.7.0"
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-[[package]]
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-
-[[package]]
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-optional = false
-python-versions = ">=3.5"
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-
-[[package]]
-name = "iniconfig"
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-description = "brain-dead simple config-ini parsing"
-optional = false
-python-versions = ">=3.7"
-files = [
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-]
-
-[[package]]
-name = "install-jdk"
-version = "1.1.0"
-description = "install-jdk allows you to easily install latest Java OpenJDK version. Supports OpenJDK builds from Adoptium (previously AdoptOpenJDK), Corretto, and Zulu. Simplify your Java development with the latest OpenJDK builds."
-optional = false
-python-versions = ">=3.6,<4.0"
-files = [
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-]
-
-[[package]]
-name = "packaging"
-version = "24.0"
-description = "Core utilities for Python packages"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "packaging-24.0-py3-none-any.whl", hash = "sha256:2ddfb553fdf02fb784c234c7ba6ccc288296ceabec964ad2eae3777778130bc5"},
-    {file = "packaging-24.0.tar.gz", hash = "sha256:eb82c5e3e56209074766e6885bb04b8c38a0c015d0a30036ebe7ece34c9989e9"},
-]
-
-[[package]]
-name = "pluggy"
-version = "1.4.0"
-description = "plugin and hook calling mechanisms for python"
-optional = false
-python-versions = ">=3.8"
-files = [
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-]
-
-[package.extras]
-dev = ["pre-commit", "tox"]
-testing = ["pytest", "pytest-benchmark"]
-
-[[package]]
-name = "pytest"
-version = "8.1.1"
-description = "pytest: simple powerful testing with Python"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "pytest-8.1.1-py3-none-any.whl", hash = "sha256:2a8386cfc11fa9d2c50ee7b2a57e7d898ef90470a7a34c4b949ff59662bb78b7"},
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-]
-
-[package.dependencies]
-colorama = {version = "*", markers = "sys_platform == \"win32\""}
-iniconfig = "*"
-packaging = "*"
-pluggy = ">=1.4,<2.0"
-
-[package.extras]
-testing = ["argcomplete", "attrs (>=19.2)", "hypothesis (>=3.56)", "mock", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
-
-[[package]]
-name = "requests"
-version = "2.31.0"
-description = "Python HTTP for Humans."
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "requests-2.31.0-py3-none-any.whl", hash = "sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f"},
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-]
-
-[package.dependencies]
-certifi = ">=2017.4.17"
-charset-normalizer = ">=2,<4"
-idna = ">=2.5,<4"
-urllib3 = ">=1.21.1,<3"
-
-[package.extras]
-socks = ["PySocks (>=1.5.6,!=1.5.7)"]
-use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
-
-[[package]]
-name = "urllib3"
-version = "2.2.1"
-description = "HTTP library with thread-safe connection pooling, file post, and more."
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "urllib3-2.2.1-py3-none-any.whl", hash = "sha256:450b20ec296a467077128bff42b73080516e71b56ff59a60a02bef2232c4fa9d"},
-    {file = "urllib3-2.2.1.tar.gz", hash = "sha256:d0570876c61ab9e520d776c38acbbb5b05a776d3f9ff98a5c8fd5162a444cf19"},
-]
-
-[package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
-h2 = ["h2 (>=4,<5)"]
-socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
-zstd = ["zstandard (>=0.18.0)"]
-
-[metadata]
-lock-version = "2.0"
-python-versions = "^3.11"
-content-hash = "219ae57c327a59b44840bb8702fa53d6be4897efea08ece7e31591e836c65a8a"
diff --git a/cratedb_sqlparse_py/pyproject.toml b/cratedb_sqlparse_py/pyproject.toml
index 27a15cb..eb56846 100644
--- a/cratedb_sqlparse_py/pyproject.toml
+++ b/cratedb_sqlparse_py/pyproject.toml
@@ -1,21 +1,218 @@
-[tool.poetry]
+[build-system]
+build-backend = "setuptools.build_meta"
+requires = [
+  "setuptools>=42", # At least v42 of setuptools required.
+  "versioningit",
+]
+
+[tool.versioningit.vcs]
+method = "git"
+default-tag = "0.0.0"
+
+[project]
 name = "cratedb-sqlparse"
-version = "0.1.0"
-description = ""
-authors = ["surister <surister98@gmail.com>"]
+description = "Parsing utilities to validate and split SQL statements for CrateDB."
 readme = "README.md"
-packages = [{include = "cratedb_sqlparse"}]
+keywords = [
+  "antlr4",
+  "antlr4 grammar",
+  "cratedb",
+  "grammar",
+  "sql",
+  "sql grammar",
+  "sql parser",
+  "sql parsing",
+]
+license = { text = "Apache License 2.0" }
+authors = [
+  { name = "Ivan Sanchez Valencia", email = "ivan.sanchezvalencia@crate.io" },
+]
+requires-python = ">=3.8,<3.13"
+classifiers = [
+  "Development Status :: 3 - Alpha",
+  "Environment :: Console",
+  "Intended Audience :: Customer Service",
+  "Intended Audience :: Developers",
+  "Intended Audience :: Education",
+  "Intended Audience :: End Users/Desktop",
+  "Intended Audience :: Information Technology",
+  "Intended Audience :: Science/Research",
+  "Intended Audience :: Telecommunications Industry",
+  "License :: OSI Approved :: Apache Software License",
+  "Operating System :: MacOS :: MacOS X",
+  "Operating System :: Microsoft :: Windows",
+  "Operating System :: POSIX :: Linux",
+  "Operating System :: Unix",
+  "Programming Language :: Python",
+  "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",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: SQL",
+  "Topic :: Communications",
+  "Topic :: Database",
+  "Topic :: Documentation",
+  "Topic :: Education",
+  "Topic :: Office/Business",
+  "Topic :: Scientific/Engineering",
+  "Topic :: Software Development :: Libraries",
+  "Topic :: Software Development :: Testing",
+  "Topic :: System :: Archiving",
+  "Topic :: System :: Systems Administration",
+  "Topic :: Text Processing",
+  "Topic :: Utilities",
+]
+dynamic = [
+  "version",
+]
+dependencies = [
+  "antlr4-python3-runtime<4.14",
+]
+[project.optional-dependencies]
+develop = [
+  "mypy<1.10",
+  "poethepoet<0.26",
+  "pyproject-fmt<1.8",
+  "ruff<0.4",
+  "validate-pyproject<0.17",
+]
+generate = [
+  "antlr4-tools<0.3",
+  "requests<3",
+]
+release = [
+  "build<2",
+  "twine<6",
+]
+test = [
+  "pytest<9",
+  "pytest-cov<6",
+]
+[project.urls]
+changelog = "https://github.com/crate/cratedb-sqlparse/blob/main/CHANGES.md"
+documentation = "https://github.com/crate/cratedb-sqlparse"
+homepage = "https://github.com/crate/cratedb-sqlparse"
+repository = "https://github.com/crate/cratedb-sqlparse"
 
-[tool.poetry.dependencies]
-python = "^3.11"
-antlr4-python3-runtime = "^4.13.1"
+[tool.black]
+line-length = 120
 
+[tool.coverage.run]
+branch = false
+omit = [
+  "tests/*",
+]
+source = ["cratedb_sqlparse"]
 
-[tool.poetry.group.dev.dependencies]
-requests = "^2.31.0"
-antlr4-tools = "^0.2.1"
-pytest = "^8.1.1"
+[tool.coverage.report]
+fail_under = 0
+show_missing = true
 
-[build-system]
-requires = ["poetry-core"]
-build-backend = "poetry.core.masonry.api"
+[tool.mypy]
+packages = ["cratedb_sqlparse"]
+install_types = true
+ignore_missing_imports = true
+implicit_optional = true
+non_interactive = true
+
+[tool.pytest.ini_options]
+addopts = """
+  -rA --verbosity=3 --capture=no
+  --cov --cov-report=term-missing --cov-report=xml
+"""
+minversion = "2.0"
+log_level = "DEBUG"
+log_cli_level = "DEBUG"
+log_format = "%(asctime)-15s [%(name)-24s] %(levelname)-8s: %(message)s"
+testpaths = [
+  "cratedb_sqlparse",
+  "tests",
+]
+xfail_strict = true
+markers = [
+]
+
+[tool.ruff]
+line-length = 120
+
+lint.select = [
+  # Bandit
+  "S",
+  # Bugbear
+  "B",
+  # Builtins
+  "A",
+  # comprehensions
+  "C4",
+  # eradicate
+  "ERA",
+  # flake8-2020
+  "YTT",
+  # isort
+  "I",
+  # pandas-vet
+  "PD",
+  # print
+  "T20",
+  # Pycodestyle
+  "E",
+  "W",
+  # Pyflakes
+  "F",
+  # return
+  "RET",
+]
+
+lint.extend-ignore = [
+  # Unnecessary variable assignment before `return` statement
+  "RET504",
+  # Unnecessary `elif` after `return` statement
+  "RET505",
+]
+
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = [
+  # Use of `assert` detected.
+  "S101",
+]
+"influxio/util/report.py" = [
+  "T201",
+]
+
+[tool.setuptools.packages.find]
+namespaces = false
+
+
+# ===================
+# Tasks configuration
+# ===================
+
+[tool.poe.tasks]
+
+check = [
+  "lint",
+  "test",
+]
+
+format = [
+  # { cmd = "ruff format ." },
+  # Configure Ruff not to auto-fix (remove!) unused variables (F841) and `print` statements (T201).
+  # { cmd = "ruff check --fix --ignore=ERA --ignore=F401 --ignore=F841 --ignore=T20 ." },
+  { cmd = "pyproject-fmt --keep-full-version pyproject.toml" },
+]
+
+lint = [
+  # { cmd = "ruff format --check ." },
+  # { cmd = "ruff check ." },
+  { cmd = "validate-pyproject pyproject.toml" },
+  # { cmd = "mypy" },
+]
+
+release = [
+  { cmd = "python -m build" },
+  { cmd = "twine upload dist/*" },
+]
+
+test = { cmd = "pytest" }
diff --git a/cratedb_sqlparse_py/tests/conftest.py b/cratedb_sqlparse_py/tests/conftest.py
new file mode 100644
index 0000000..3d5d40f
--- /dev/null
+++ b/cratedb_sqlparse_py/tests/conftest.py
@@ -0,0 +1,26 @@
+import subprocess
+import sys
+from pathlib import Path
+
+import pytest
+
+
+HERE = Path(__file__).parent
+PROJECT_ROOT = HERE.parent.parent
+SETUP_GRAMMAR = PROJECT_ROOT / "setup_grammar.py"
+
+
+@pytest.fixture(scope="session", autouse=True)
+def generate():
+    """
+    Pytest fixture to generate runtime grammar from grammar description.
+    """
+    try:
+        import cratedb_sqlparse.generated_parser.SqlBaseParser
+    except ImportError:
+        subprocess.check_call([sys.executable, SETUP_GRAMMAR], cwd=HERE.parent.parent)
+
+    try:
+        import cratedb_sqlparse.generated_parser.SqlBaseParser
+    except ImportError:
+        raise RuntimeError("Python grammar has not been generated")
diff --git a/cratedb_sqlparse_py/tests/test_lexer.py b/cratedb_sqlparse_py/tests/test_lexer.py
index 860e08e..427df73 100644
--- a/cratedb_sqlparse_py/tests/test_lexer.py
+++ b/cratedb_sqlparse_py/tests/test_lexer.py
@@ -1,9 +1,8 @@
 import pytest
 
-from cratedb_sqlparse import sqlparse, ParsingException
-
 
 def test_sqlparser_one_statement(query=None):
+    from cratedb_sqlparse import sqlparse
     query = query or 'SELECT 1;'
     r = sqlparse(query)
 
@@ -17,6 +16,7 @@ def test_sqlparser_one_statement(query=None):
 
 
 def test_sqlparse_several_statements():
+    from cratedb_sqlparse import sqlparse
     query = """
     SELECT 1;
     INSERT INTO doc.tbl VALUES (1,2,3,4,5,6);
@@ -34,6 +34,7 @@ def test_sqlparse_several_statements():
 
 
 def test_sqlparse_dollar_string():
+    from cratedb_sqlparse import sqlparse
     query = "update test set a=$$test;test$$"
     r = sqlparse(query)
 
@@ -41,6 +42,7 @@ def test_sqlparse_dollar_string():
 
 
 def test_sqlparse_raises_exception():
+    from cratedb_sqlparse import sqlparse, ParsingException
     query = "SALUT MON AMIE"
 
     with pytest.raises(ParsingException):
@@ -48,6 +50,7 @@ def test_sqlparse_raises_exception():
 
 
 def test_sqlparse_is_case_insensitive():
+    from cratedb_sqlparse import sqlparse
     query = "inSerT InTo doc.Tbl1 Values (1)"
 
     r = sqlparse(query)
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..0e682b0
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,5 @@
+[tool.poe.tasks]
+
+generate = [
+  { cmd = "python setup_grammar.py" },
+]
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..6743876
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+antlr4-tools<0.3
+poethepoet<0.26
+requests<3
diff --git a/setup_grammar.py b/setup_grammar.py
index 003fe29..b6050c4 100644
--- a/setup_grammar.py
+++ b/setup_grammar.py
@@ -1,11 +1,20 @@
 import datetime
-import pathlib
+import logging
 import subprocess
+import sys
 from enum import Enum
+from pathlib import Path
 
 import requests
 
 
+def setup_logging():
+    logging.basicConfig(stream=sys.stderr, level=logging.INFO, format="%(asctime)s %(levelname)s %(name)s: %(message)s")
+
+
+logger = logging.getLogger(__name__)
+
+
 class Antlr4Target(Enum):
     js = 'JavaScript'
     python = 'Python3'
@@ -32,7 +41,7 @@ class Antlr4Target(Enum):
     ]
 }
 
-PARSER_COMPILE_PATH = pathlib.Path(__file__).parent
+PARSER_COMPILE_PATH = Path(__file__).parent
 
 
 def download_cratedb_grammar(version='master'):
@@ -43,13 +52,16 @@ def download_cratedb_grammar(version='master'):
         $ curl https://api.github.com/repos/crate/crate/tags | jq -r '.[] | .name'
     """
     for file in build_options['files']:
-        response = requests.get(file['url'].format(version=version))
+        url = file['url'].format(version=version)
+        logger.info(f"Downloading grammar: {url}")
+        response = requests.get(url)
 
         # We annotate the CrateDB branch and date of download to the Grammar files for reference.
         text = f'/* crate_branch={version}, at={datetime.datetime.now()}, annotatedby=cratedb_sqlparse */\n' + response.text
 
-        with open(str(PARSER_COMPILE_PATH.parent / file['filename']), 'w') as f:
-            f.write(text)
+        outfile = PARSER_COMPILE_PATH / file['filename']
+        logger.info(f"Writing downloaded grammar: {outfile}")
+        outfile.write_text(text)
 
 
 def compile_grammar(target: Antlr4Target):
@@ -61,7 +73,9 @@ def compile_grammar(target: Antlr4Target):
     sub_dir = build_options['antlr4_compiled_target_subdir']
 
     for file in build_options['files']:
-        subprocess.run(
+        outfile = PARSER_COMPILE_PATH / base_dir / sub_dir / file['filename']
+        logger.info(f"Compiling grammar: {outfile}")
+        subprocess.check_call(
             [
                 'antlr4', f'-Dlanguage={target.value}',
                 '-o',
@@ -76,6 +90,8 @@ def patch_lexer(target: Antlr4Target):
     Patches the lexer file, removing bad syntax generated by Antlr4.
     """
 
+    logger.info(f"Patching lexer type: {target}")
+
     REMOVE_LINES = [
         'import io.crate.sql.AbstractSqlBaseLexer;',
     ]
@@ -87,14 +103,15 @@ def patch_lexer(target: Antlr4Target):
     sub_dir = build_options['antlr4_compiled_target_subdir']
     file_name = build_options['files'][0]['filename'].replace('g4', extension)
 
-    lexer_file = PARSER_COMPILE_PATH / base_dir / sub_dir / file_name
+    lexer_file = Path(PARSER_COMPILE_PATH / base_dir / sub_dir / file_name)
+    logger.info(f"Patching lexer file: {lexer_file}")
 
-    text = pathlib.Path(lexer_file).read_text()
+    text = lexer_file.read_text()
 
     for text_to_remove in REMOVE_LINES:
         text = text.replace(text_to_remove, '')
 
-    pathlib.Path(lexer_file).write_text(text)
+    lexer_file.write_text(text)
 
 
 def set_version(target: Antlr4Target, version: str):
@@ -120,11 +137,14 @@ def set_version(target: Antlr4Target, version: str):
         index_file = 'index.js'
         variable = 'export const __cratedb_version__'
 
+    # FIXME: Need to apply "replace" instead of "append"?
     with open(target_path / index_file, "a") as f:
         f.write(f"{variable} = {version}\n")
 
 
 if __name__ == '__main__':
+    setup_logging()
+    # TODO: Converge into command-line argument?
     version = '5.6.4'
     target = Antlr4Target.python
     download_cratedb_grammar(version)