/bin/twnbuild: python based build solution

bin/twnbuild

@@ -0,0 +1,36 @@
+#!/bin/env python3
+
+from subprocess import getoutput, run
+from os.path import expandvars
+from pathlib import Path
+from sys import argv
+import tomllib
+
+has_ninja = getoutput("command -v ninja") != ""
+has_clang = getoutput("command -v clang") != ""
+
+#TODO: support for default pack override
+
+cmake = ["cmake"]
+# check whether clang is around (it's just better)
+if has_clang:
+    cmake += ["-DCMAKE_C_COMPILER=clang"]
+# check whether ninja is around (you better start running)
+if has_ninja:
+    cmake += ["-G", "Ninja"]
+cmake += ["-B", "build"]
+# TODO: have it --fast instead, where separate --no-debug would mean stripping the debug info
+if "--release" in argv:
+    cmake += ["-DCMAKE_BUILD_TYPE=Release"]
+# pass arbitrary arguments over
+if "--" in argv:
+    cmake += argv[argv.find("--"):]
+
+# if no root cmake file is present, infer it from `twn.toml:game.interpreter`
+if not Path("CMakeLists.txt").is_file():
+    with open("data/twn.toml", "rb") as f:
+        config = tomllib.load(f)
+        cmake += ["-S", expandvars(config["game"]["interpreter"])]
+
+run(cmake, check=True)
+run(["cmake", "--build", "build", "--parallel"], check=True)