Migrate to pyproject.toml with setuptools_scm

Replace custom version management with setuptools_scm to eliminate
source file modifications during installation. Version is now derived
from git tags at build time without writing to tracked files.

Changes:
- Add pyproject.toml with full project metadata
- Simplify setup.py to minimal backwards-compatible shim
- Remove curateipsum/_version.py from version control
- Add _version.py to .gitignore (auto-generated at build time)
- Use PEP 440 compliant version strings

Fixes #18

.gitignore

@@ -25,6 +25,9 @@ wheels/
 *.egg
 MANIFEST
 
+# Version file generated by setuptools_scm
+curateipsum/_version.py
+
 # PyInstaller
 #  Usually these files are written by a python script from a template
 #  before PyInstaller builds the exe, so as to inject date/other infos into it.
@@ -72,8 +75,9 @@ target/
 # Jupyter Notebook
 .ipynb_checkpoints
 
-# pyenv
+# uv
 .python-version
+uv.lock
 
 # celery beat schedule file
 celerybeat-schedule

curateipsum/_version.py

@@ -1 +0,0 @@
-version = "master"

pyproject.toml

@@ -0,0 +1,36 @@
+[build-system]
+requires = ["setuptools>=64", "setuptools_scm>=8"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "cura-te-ipsum"
+dynamic = ["version"]
+description = "Backup utility"
+authors = [
+    {name = "Maks Snegov", email = "snegov@spqr.link"}
+]
+readme = "README.md"
+requires-python = ">=3.6"
+classifiers = [
+    "Development Status :: 2 - Pre-Alpha",
+    "Intended Audience :: Developers",
+    "Intended Audience :: System Administrators",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Topic :: System :: Archiving :: Backup",
+]
+
+[project.urls]
+Homepage = "https://github.com/snegov/cura-te-ipsum"
+"Bug Tracker" = "https://github.com/snegov/cura-te-ipsum/issues"
+GitHub = "https://github.com/snegov/cura-te-ipsum"
+
+[project.scripts]
+cura-te-ipsum = "curateipsum.cli:main"
+
+[tool.setuptools]
+packages = ["curateipsum"]
+
+[tool.setuptools_scm]
+version_file = "curateipsum/_version.py"

setup.py

@@ -1,48 +1,5 @@
-import setuptools
-import subprocess
+# Minimal setup.py for backwards compatibility
+# All configuration is in pyproject.toml
+from setuptools import setup
 
-
-def get_version_from_vcs():
-    ret_code, git_ver = subprocess.getstatusoutput("git describe")
-    if ret_code != 0:
-        from curateipsum._version import version
-        return version
-
-    with open("curateipsum/_version.py", "w") as fd:
-        fd.write("version = \"%s\"\n" % git_ver)
-        return git_ver
-
-
-with open("README.md", "r", encoding="utf-8") as fh:
-    long_description = fh.read()
-
-setuptools.setup(
-    name="cura-te-ipsum",
-    version=get_version_from_vcs(),
-    author="Maks Snegov",
-    author_email="snegov@spqr.link",
-    url="https://github.com/snegov/cura-te-ipsum",
-    description="Backup utility",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    project_urls={
-        "Bug Tracker": "https://github.com/snegov/cura-te-ipsum/issues",
-        "GitHub": "https://github.com/snegov/cura-te-ipsum",
-    },
-    classifiers=[
-        "Development Status :: 2 - Pre-Alpha",
-        "Intended Audience :: Developers",
-        "Intended Audience :: System Administrators",
-        "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3",
-        "Topic :: System :: Archiving :: Backup",
-    ],
-    packages=setuptools.find_packages(include=["curateipsum"]),
-    entry_points={
-        "console_scripts": [
-            "cura-te-ipsum = curateipsum.cli:main",
-        ],
-    },
-    python_requires=">=3.6",
-)
+setup()