fix regression that broke type checking of CustomTarget outputs

We validate a few things here, such as the non-presence of '@INPUT' in
an output name. These got moved out of the CustomTarget constructor in
commit 11f96380351a88059ec55f1070fdebc1b1033117 and into KwargInfo, but
only for kwargs that took multiple values. This caused configure_file()
and unstable_rust.bindgen() to stop checking for this.

Add a shared single-output KW and use it in both places. This now
dispatches to _output_validator.

configure_file now validates subdirectories in output names the same way
we do elsewhere, directly in the typed_kwargs and by specifying the
erroring kwarg.

1 files changed, 2 insertions, 2 deletions

diff --git a/mesonbuild/modules/unstable_rust.py b/mesonbuild/modules/unstable_rust.py
index 4d6718e..e31a697 100644
--- a/mesonbuild/modules/unstable_rust.py
+++ b/mesonbuild/modules/unstable_rust.py
@@ -19,7 +19,7 @@ from . import ExtensionModule, ModuleReturnValue
 from .. import mlog
 from ..build import BothLibraries, BuildTarget, CustomTargetIndex, Executable, ExtractedObjects, GeneratedList, IncludeDirs, CustomTarget, StructuredSources
 from ..dependencies import Dependency, ExternalLibrary
-from ..interpreter.interpreter import TEST_KWARGS
+from ..interpreter.interpreter import TEST_KWARGS, OUTPUT_KW
 from ..interpreterbase import ContainerTypeInfo, InterpreterException, KwargInfo, FeatureNew, typed_kwargs, typed_pos_args, noPosargs
 from ..mesonlib import File
 
@@ -173,7 +173,7 @@ class RustModule(ExtensionModule):
             listify=True,
             required=True,
         ),
-        KwargInfo('output', str, required=True),
+        OUTPUT_KW,
     )
     def bindgen(self, state: 'ModuleState', args: T.List, kwargs: 'FuncBindgen') -> ModuleReturnValue:
         """Wrapper around bindgen to simplify it's use.