diff --git a/pkgs/development/libraries/goocanvas/2.x.nix b/pkgs/development/libraries/goocanvas/2.x.nix
index 3f2e32519cf4..ab1137530cee 100644
--- a/pkgs/development/libraries/goocanvas/2.x.nix
+++ b/pkgs/development/libraries/goocanvas/2.x.nix
@@ -55,8 +55,11 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--disable-python"
   ];
-  PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_GIRDIR = "$(dev)/share/gir-1.0";
-  PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_TYPELIBDIR = "$(out)/lib/girepository-1.0";
+
+  env = {
+    PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_GIRDIR = "$(dev)/share/gir-1.0";
+    PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_TYPELIBDIR = "$(out)/lib/girepository-1.0";
+  };
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/development/libraries/goocanvas/3.x.nix b/pkgs/development/libraries/goocanvas/3.x.nix
index 4844be9c4a3a..4d37b3f307da 100644
--- a/pkgs/development/libraries/goocanvas/3.x.nix
+++ b/pkgs/development/libraries/goocanvas/3.x.nix
@@ -54,8 +54,10 @@ stdenv.mkDerivation (finalAttrs: {
     glib
   ];
 
-  PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_GIRDIR = "$(dev)/share/gir-1.0";
-  PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_TYPELIBDIR = "$(out)/lib/girepository-1.0";
+  env = {
+    PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_GIRDIR = "$(dev)/share/gir-1.0";
+    PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_TYPELIBDIR = "$(out)/lib/girepository-1.0";
+  };
 
   passthru = {
     updateScript = gnome.updateScript {