pylint: enable unnecessary-not check

This finds things like
```python
if not x == 1:
```
which should be
```python
if x != 1:
```

.pylintrc

@@ -10,6 +10,7 @@ enable=
     abstract-class-instantiated,
     assert-on-tuple,
     bad-indentation,
+    bare-except,
     compare-to-zero,
     dangerous-default-value,
     deprecated-lambda,
@@ -22,5 +23,5 @@ enable=
     singleton-comparison,
     too-many-function-args,
     unexpected-keyword-arg,
-    unreachable,
-    bare-except
+    unneeded-not,
+    unreachable

mesonbuild/interpreter/interpreterobjects.py

@@ -117,7 +117,7 @@ def disabled_method(self, args: T.List[TYPE_var], kwargs: TYPE_kwargs) -> bool:
     @noPosargs
     @noKwargs
     def allowed_method(self, args: T.List[TYPE_var], kwargs: TYPE_kwargs) -> bool:
-        return not self.value == 'disabled'
+        return self.value != 'disabled'
 
     @noPosargs
     @noKwargs