diff --git a/examples/editor.scm b/examples/editor.scm
index f6c19bac..90252523 100644
--- a/examples/editor.scm
+++ b/examples/editor.scm
@@ -22,8 +22,6 @@
 
 (push-duplicate-handler! 'merge-generics)
 (use-typelibs
- ;; load GObject first to prevent warnings, even if we don't directly need it
- (("GObject" "2.0") #:select ())
  (("Gio" "2.0") #:renamer (protect* '(application:new receive)))
  ("Gtk" "3.0")
  ("Gdk" "3.0"))
diff --git a/module/gi/repository.scm b/module/gi/repository.scm
index 9508e521..25adca81 100644
--- a/module/gi/repository.scm
+++ b/module/gi/repository.scm
@@ -34,6 +34,14 @@
 (eval-when (expand load eval)
   (load-extension "libguile-gi" "gig_init_repository"))
 
+(define %gig-duplicate-handlers
+  (append
+   (lookup-duplicates-handlers
+    '(merge-generics replace warn-override-core))
+   (list %gig-duplicate-warn)
+   (lookup-duplicates-handlers
+    '(last))))
+
 (define-method (load (info <GIBaseInfo>))
   (%load-info info LOAD_EVERYTHING))
 
@@ -45,10 +53,14 @@
 
 (define* (typelib->module module lib #:optional version)
   (require lib version)
-  (set! module (cond
-                ((module? module) module)
-                ((list? module) (resolve-module module))
-                (else (error "not a module: ~A" module))))
+  (set! module
+    (cond
+     ((module? module) module)
+     ((list? module)
+      (let ((m (resolve-module module)))
+        (set-module-duplicates-handlers! m %gig-duplicate-handlers)
+        m))
+     (else (error "not a module: ~A" module))))
 
   (unless (module-public-interface module)
     (let ((interface (make-module)))
@@ -57,6 +69,17 @@
       (set-module-kind! interface 'interface)
       (set-module-public-interface! module interface)))
 
+  (for-each
+   (lambda (dep)
+     (module-use!
+      module
+      (let ((module (list 'gi (string->symbol dep)))
+           (lib+version (string-split dep #\-)))
+       (or (false-if-exception (resolve-interface module))
+           (module-public-interface
+            (apply typelib->module module lib+version))))))
+   (immediate-dependencies lib))
+
   (save-module-excursion
    (lambda ()
      (set-current-module module)
diff --git a/src/gig_repository.c b/src/gig_repository.c
index 4aa3f557..9320c045 100644
--- a/src/gig_repository.c
+++ b/src/gig_repository.c
@@ -23,6 +23,47 @@
 #include "gig_flag.h"
 #include "gig_repository.h"
 
+static SCM module_name_proc = SCM_UNDEFINED;
+
+static SCM
+scm_module_name(SCM module)
+{
+    if (SCM_UNBNDP(module_name_proc))
+        module_name_proc = scm_c_public_ref("guile", "module-name");
+    return scm_call_1(module_name_proc, module);
+}
+
+static SCM
+gig_duplicate_warn(SCM module, SCM name, SCM int1, SCM val1, SCM int2, SCM val2, SCM var, SCM val)
+{
+
+    SCM _module_s, _name_s, _int1_s, _int2_s, _val1_s, _val2_s;
+    gchar *module_s, *name_s, *int1_s, *int2_s, *val1_s, *val2_s;
+    scm_dynwind_begin(0);
+
+    _int1_s = scm_object_to_string(scm_module_name(int1), SCM_UNDEFINED);
+    _int2_s = scm_object_to_string(scm_module_name(int2), SCM_UNDEFINED);
+    _val1_s = scm_object_to_string(val1, SCM_UNDEFINED);
+    _val2_s = scm_object_to_string(val2, SCM_UNDEFINED);
+    _module_s = scm_object_to_string(scm_module_name(module), SCM_UNDEFINED);
+    _name_s = scm_object_to_string(name, SCM_UNDEFINED);
+
+    module_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_module_s));
+    name_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_name_s));
+    int1_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_int1_s));
+    int2_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_int2_s));
+    val1_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_val1_s));
+    val2_s = scm_dynwind_or_bust("%gig-duplicate-warn", scm_to_utf8_string(_val2_s));
+
+    gig_warning_load("%s: `%s' imported from both %s and %s", module_s, name_s, int1_s, int2_s);
+    gig_debug_load("binding from %s: %s", int1_s, val1_s);
+    gig_debug_load("binding from %s: %s", int2_s, val2_s);
+
+    scm_dynwind_end();
+
+    return SCM_BOOL_F;
+}
+
 static SCM
 require(SCM lib, SCM version)
 {
@@ -48,6 +89,31 @@ require(SCM lib, SCM version)
     return SCM_UNSPECIFIED;
 }
 
+static SCM
+immediate_dependencies(SCM lib)
+{
+    gchar *_lib, **deps;
+    guint n_deps;
+    SCM ret, iter;
+
+    scm_dynwind_begin(0);
+    _lib = scm_dynwind_or_bust("immediate-dependencies", scm_to_utf8_string(lib));
+    deps = g_irepository_get_immediate_dependencies(NULL, _lib);
+    scm_dynwind_end();
+
+    if (deps == NULL)
+        scm_misc_error("immediate-dependencies", "could not find dependencies for ~A", scm_list_1(lib));
+    n_deps = g_strv_length(deps);
+
+    ret = scm_make_list(scm_from_uint(n_deps), SCM_UNDEFINED);
+    iter = ret;
+    for (guint i = 0; i < n_deps; i++, iter = scm_cdr(iter))
+        scm_set_car_x(iter, scm_from_utf8_string(deps[i]));
+    g_strfreev(deps);
+
+    return ret;
+}
+
 static SCM
 infos(SCM lib)
 {
@@ -349,7 +415,9 @@ prepend_search_path(SCM s_dir)
 void
 gig_init_repository()
 {
+    scm_c_define_gsubr("%gig-duplicate-warn", 8, 0, 0, gig_duplicate_warn);
     scm_c_define_gsubr("require", 1, 1, 0, require);
+    scm_c_define_gsubr("immediate-dependencies", 1, 0, 0, immediate_dependencies);
     scm_c_define_gsubr("infos", 1, 0, 0, infos);
     scm_c_define_gsubr("info", 2, 0, 0, info);
     scm_c_define_gsubr("%load-info", 1, 1, 0, load);