diff --git a/common/nextpnr.cc b/common/nextpnr.cc
index a197eaff..3861e5fe 100644
--- a/common/nextpnr.cc
+++ b/common/nextpnr.cc
@@ -27,8 +27,6 @@ assertion_failure::assertion_failure(std::string msg, std::string expr_str, std:
 {
 }
 
-std::unordered_set<BaseCtx *> IdString::global_ctx;
-
 void IdString::set(const BaseCtx *ctx, const std::string &s)
 {
     auto it = ctx->idstring_str_to_idx->find(s);
diff --git a/common/nextpnr.h b/common/nextpnr.h
index 6a45875b..ec0c2f9f 100644
--- a/common/nextpnr.h
+++ b/common/nextpnr.h
@@ -118,16 +118,6 @@ struct IdString
     bool operator!=(const IdString &other) const { return index != other.index; }
 
     bool empty() const { return index == 0; }
-
-    // --- deprecated old API ---
-
-    static std::unordered_set<BaseCtx *> global_ctx;
-
-    NPNR_DEPRECATED const std::string &global_str() const
-    {
-        assert(global_ctx.size() == 1);
-        return str(*global_ctx.begin());
-    }
 };
 
 NEXTPNR_NAMESPACE_END
@@ -252,8 +242,6 @@ struct BaseCtx
 
     BaseCtx()
     {
-        IdString::global_ctx.insert(this);
-
         idstring_str_to_idx = new std::unordered_map<std::string, int>;
         idstring_idx_to_str = new std::vector<const std::string *>;
         IdString::initialize_add(this, "", 0);
@@ -262,7 +250,6 @@ struct BaseCtx
 
     ~BaseCtx()
     {
-        IdString::global_ctx.erase(this);
         delete idstring_str_to_idx;
         delete idstring_idx_to_str;
     }
diff --git a/common/pycontainers.h b/common/pycontainers.h
index 260a9dd6..f4251558 100644
--- a/common/pycontainers.h
+++ b/common/pycontainers.h
@@ -276,10 +276,7 @@ template <typename T, typename value_conv> struct map_wrapper
         x.base[PythonConversion::string_converter<K>().from_str(x.ctx, i)] = v;
     }
 
-    static size_t len(wrapped_map &x)
-    {
-        return x.base.size();
-    }
+    static size_t len(wrapped_map &x) { return x.base.size(); }
 
     static void del(T const &x, std::string const &i)
     {
@@ -399,10 +396,7 @@ template <typename T> struct map_wrapper_uptr
         x.base[PythonConversion::string_converter<K>().from_str(x.ctx, i)] = typename T::mapped_type(v);
     }
 
-    static size_t len(wrapped_map &x)
-    {
-        return x.base.size();
-    }
+    static size_t len(wrapped_map &x) { return x.base.size(); }
 
     static void del(T const &x, std::string const &i)
     {
diff --git a/common/pywrappers.h b/common/pywrappers.h
index 0643eb0a..be274aad 100644
--- a/common/pywrappers.h
+++ b/common/pywrappers.h
@@ -129,15 +129,15 @@ template <typename T> struct conv_to_str
 
 template <typename T> struct deref_and_wrap
 {
-    inline ContextualWrapper<T&> operator()(Context *ctx, T *x)
+    inline ContextualWrapper<T &> operator()(Context *ctx, T *x)
     {
         if (x == nullptr)
             throw bad_wrap();
-        return ContextualWrapper<T&>(ctx, *x);
+        return ContextualWrapper<T &>(ctx, *x);
     }
 
     using arg_type = T *;
-    using ret_type = ContextualWrapper<T&>;
+    using ret_type = ContextualWrapper<T &>;
 };
 
 // Function wrapper