gh-133259: Show path to python.sh script on successful build (#133268)

* gh-133259: Show path to python.sh script on successful build

* wasmtime -> (generic) wasm runtime

Author: mdboom

Tools/wasm/wasi.py

@@ -270,6 +270,10 @@ def make_wasi_python(context, working_dir):
 
     exec_script = working_dir / "python.sh"
     subprocess.check_call([exec_script, "--version"])
+    print(
+        f"🎉 Use '{exec_script.relative_to(context.init_dir)}' "
+        "to run CPython in wasm runtime"
+    )
 
 
 def build_all(context):
@@ -348,6 +352,7 @@ def main():
                         help="The target triple for the WASI host build")
 
     context = parser.parse_args()
+    context.init_dir = pathlib.Path().absolute()
 
     dispatch = {"configure-build-python": configure_build_python,
                 "make-build-python": make_build_python,