3 files changed, 4 insertions, 4 deletions
diff --git a/common/kernel/arch_api.h b/common/kernel/arch_api.h
index 94a88338..56c5cf0a 100644
--- a/common/kernel/arch_api.h
+++ b/common/kernel/arch_api.h
@@ -135,7 +135,7 @@ template <typename R> struct ArchAPI : BaseCtx
     virtual BelBucketId getBelBucketByName(IdString name) const = 0;
     virtual BelBucketId getBelBucketForBel(BelId bel) const = 0;
     virtual BelBucketId getBelBucketForCellType(IdString cell_type) const = 0;
-    virtual bool isBelLocationValid(BelId bel) const = 0;
+    virtual bool isBelLocationValid(BelId bel, bool explain_invalid = false) const = 0;
     virtual typename R::CellTypeRangeT getCellTypes() const = 0;
     virtual typename R::BelBucketRangeT getBelBuckets() const = 0;
     virtual typename R::BucketBelRangeT getBelsInBucket(BelBucketId bucket) const = 0;
diff --git a/common/kernel/arch_pybindings_shared.h b/common/kernel/arch_pybindings_shared.h
index d78d240c..ac0eda07 100644
--- a/common/kernel/arch_pybindings_shared.h
+++ b/common/kernel/arch_pybindings_shared.h
@@ -127,8 +127,8 @@ fn_wrapper_0a<Context, decltype(&Context::archId), &Context::archId, conv_to_str
 fn_wrapper_2a_v<Context, decltype(&Context::writeSVG), &Context::writeSVG, pass_through<std::string>,
                 pass_through<std::string>>::def_wrap(ctx_cls, "writeSVG");
 
-fn_wrapper_1a<Context, decltype(&Context::isBelLocationValid), &Context::isBelLocationValid, pass_through<bool>,
-              conv_from_str<BelId>>::def_wrap(ctx_cls, "isBelLocationValid");
+fn_wrapper_2a<Context, decltype(&Context::isBelLocationValid), &Context::isBelLocationValid, pass_through<bool>,
+              conv_from_str<BelId>, pass_through<bool>>::def_wrap(ctx_cls, "isBelLocationValid");
 
 // const\_range\<BelBucketId\> getBelBuckets() const
 fn_wrapper_0a<Context, decltype(&Context::getBelBuckets), &Context::getBelBuckets,
diff --git a/common/kernel/base_arch.h b/common/kernel/base_arch.h
index 53e28652..609d9378 100644
--- a/common/kernel/base_arch.h
+++ b/common/kernel/base_arch.h
@@ -357,7 +357,7 @@ template <typename R> struct BaseArch : ArchAPI<R>
     {
         return getBelBucketByName(cell_type);
     };
-    virtual bool isBelLocationValid(BelId bel) const override { return true; }
+    virtual bool isBelLocationValid(BelId bel, bool explain_invalid = false) const override { return true; }
     virtual typename R::CellTypeRangeT getCellTypes() const override
     {
         NPNR_ASSERT(cell_types_initialised);