build: Use git tags for versioningHEAD0.23.0master

Replace setup.py metadata with pyproject.toml and derive version from
git tags with setuptools-scm. Adds git archive support for
setuptools-scm version detection.

1 files changed, 45 insertions, 22 deletions

diff --git a/setup.py b/setup.py
index a22b7bd..cdf1f55 100755
--- a/setup.py
+++ b/setup.py
@@ -1,26 +1,49 @@
-#!/usr/bin/env python
-
-import setuptools
-
-setuptools.setup(
-    name='PyOuroboros',
-    version='0.23.0',
-    url='https://ouroboros.rocks',
-    keywords='ouroboros IPC subsystem',
-    author='Dimitri Staessens',
-    author_email='dimitri@ouroboros.rocks',
-    license='LGPLv2.1',
-    description='Python API for Ouroboros',
-    packages=[
-        'ouroboros'
-    ],
-    setup_requires=[
-        "cffi>=1.0.0"
-    ],
+import subprocess
+import sys
+
+from setuptools import setup
+
+
+def _get_ouroboros_version():
+    try:
+        out = subprocess.check_output(
+            ['pkg-config', '--modversion', 'ouroboros-dev'],
+            stderr=subprocess.DEVNULL
+        )
+        return out.decode().strip()
+    except (subprocess.CalledProcessError, FileNotFoundError):
+        sys.exit("ERROR: ouroboros-dev not found via pkg-config. "
+                 "Is Ouroboros installed?")
+
+
+def _check_build_version_compat():
+    try:
+        from setuptools_scm import get_version
+        pyouro_ver = get_version(root='.', relative_to=__file__)
+    except Exception:
+        return  # no SCM info, skip check
+
+    ouro_ver = _get_ouroboros_version()
+
+    # setuptools_scm: '0.23.1.dev3+g<hash>' or '0.23.0'
+    # pkg-config:     '0.23.0'
+    # Compare major.minor only.
+    ouro_parts   = ouro_ver.split('.')
+    pyouro_parts = pyouro_ver.split('.')
+
+    if ouro_parts[0] != pyouro_parts[0] or ouro_parts[1] != pyouro_parts[1]:
+        sys.exit(
+            f"ERROR: Version mismatch: ouroboros {ouro_ver} "
+            f"vs pyouroboros {pyouro_ver} "
+            f"(major.minor must match)"
+        )
+
+
+_check_build_version_compat()
+
+setup(
     cffi_modules=[
         "ffi/pyouroboros_build_dev.py:ffibuilder",
         "ffi/pyouroboros_build_irm.py:ffibuilder"
     ],
-    install_requires=[
-        "cffi>=1.0.0"
-    ])
+)