fix cstdint collection

src/pystencilssfg/lang/expressions.py

@@ -7,7 +7,7 @@ import sympy as sp
 
 from pystencils import TypedSymbol
 from pystencils.codegen import Parameter
-from pystencils.types import PsType, PsScalarType, UserTypeSpec, create_type
+from pystencils.types import PsType, PsIntegerType, UserTypeSpec, create_type
 
 from ..exceptions import SfgException
 from .headers import HeaderFile
@@ -474,7 +474,7 @@ def includes(obj: ExprLike | PsType) -> set[HeaderFile]:
 
         case PsType():
             headers = set(HeaderFile.parse(h) for h in obj.required_headers)
-            if isinstance(obj, PsScalarType):
+            if isinstance(obj, PsIntegerType):
                 headers.add(HeaderFile.parse("<cstdint>"))
             return headers