input system rework

bin/twnbuild

@@ -1,6 +1,7 @@
 #!/bin/env python3
 
 from subprocess import getoutput, run
+from os import getcwd
 from os.path import expandvars
 from pathlib import Path
 from sys import argv
@@ -22,6 +23,7 @@ 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"]
+cmake += [f"-DTWN_OUT_DIR={getcwd()}"]
 # pass arbitrary arguments over
 if "--" in argv:
     cmake += argv[argv.index("--")+1:]