__main__: add Platform block to --version output

The --version dump is what we ask users for when triaging crashes, so
it should carry enough host info to tell macOS-on-Apple-Silicon apart
from Windows-on-AMD64 without a follow-up question. Adds a Platform
section with system, kernel, arch, Python implementation, the
interpreter path, the openage install path, and the glibc version on
Linux. All stdlib, no new deps.

Also moves the "== C++ ==" header out of LONGVERSION so it can be
printed conditionally, and falls back to a clear "Cython module not
built" line when openage.versions hasn't been compiled yet (e.g. when
running --version from a partially configured tree).

OpenGL version is still TODO; it needs a live GL context, which we
don't want to spin up just to satisfy --version. Left as a follow-up.

Refs #1185.

Author: nickk02

openage/__init__.py

@@ -1,4 +1,4 @@
-# Copyright 2013-2023 the openage authors. See copying.md for legal info.
+# Copyright 2013-2026 the openage authors. See copying.md for legal info.
 
 """
 The Python part of openage, a free engine re-write of
@@ -41,9 +41,7 @@
         f"Mako          {config.MAKOVERSION}\n"
         f"NumPy         {config.NUMPYVERSION}\n"
         f"Pillow        {config.PILVERSION}\n"
-        f"Pygments      {config.PYGMENTSVERSION}\n"
-        "\n"
-        "== C++ =="
+        f"Pygments      {config.PYGMENTSVERSION}"
     )
 
 

openage/__main__.py

@@ -1,4 +1,4 @@
-# Copyright 2015-2024 the openage authors. See copying.md for legal info.
+# Copyright 2015-2026 the openage authors. See copying.md for legal info.
 #
 # pylint: disable=too-many-statements
 """
@@ -22,12 +22,33 @@ def print_version():
     The default version printer, unfortunately, inserts newlines.
     This is the easiest way around.
     """
+    import platform
+
     from . import LONGVERSION
     print(LONGVERSION)
-    from .versions.versions import get_version_numbers
-    version_numbers = get_version_numbers()
-    for key in version_numbers:
-        print(key.decode("utf8") + " " + version_numbers[key].decode("utf8"))
+
+    print()
+    print("== Platform ==")
+    print(f"System        {platform.system()} {platform.release()}")
+    print(f"Version       {platform.version()}")
+    print(f"Architecture  {platform.machine()}")
+    print(f"Python impl   {platform.python_implementation()} {platform.python_version()}")
+    print(f"Executable    {sys.executable}")
+    print(f"openage path  {os.path.dirname(os.path.realpath(__file__))}")
+    libc_lib, libc_ver = platform.libc_ver()
+    if libc_lib:
+        print(f"libc (probe)  {libc_lib} {libc_ver}")
+
+    print()
+    print("== C++ ==")
+    try:
+        from .versions.versions import get_version_numbers
+    except ImportError:
+        print("(unavailable; openage.versions Cython module not built)")
+    else:
+        version_numbers = get_version_numbers()
+        for key in version_numbers:
+            print(key.decode("utf8") + " " + version_numbers[key].decode("utf8"))
     sys.exit(0)