diff --git a/CMakeLists.txt b/CMakeLists.txt
index d143429d..5d09893f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,6 +84,8 @@ add_subdirectory(xo-reflectutil)  # header-only reflect support
 add_subdirectory(xo-randomgen)    # xoshiro256ss
 add_subdirectory(xo-arena)        # arena allocator (DArena)
 add_subdirectory(xo-facet)        # sep iface,data
+add_subdirectory(xo-printable2)   # experiment w/ facet object model
+add_subdirectory(xo-gc)           # experiment w/ facet object model
 add_subdirectory(xo-allocutil)
 add_subdirectory(xo-refcnt)
 add_subdirectory(xo-subsys)
@@ -96,14 +98,12 @@ add_subdirectory(xo-ratio)
 add_subdirectory(xo-unit)
 add_subdirectory(xo-pyunit)
 add_subdirectory(xo-callback)
-add_subdirectory(xo-printable2)   # experiment w/ facet object model
 add_subdirectory(xo-alloc)
 add_subdirectory(xo-alloc2)       # experiment w/ facet object model
 add_subdirectory(xo-stringtable2) # experiment w/ facet object model
 #add_subdirectory(xo-reflect2)     # experiment w/ facet object model
 add_subdirectory(xo-object)
 add_subdirectory(xo-object2)      # experiment w/ facet object model
-add_subdirectory(xo-gc)           # experiment w/ facet object model
 add_subdirectory(xo-type)         # experiment w/ fomo
 add_subdirectory(xo-procedure2)   # schematika procedure abstraction + runtime context (fomo)
 add_subdirectory(xo-numeric)      # experiment w/ facet object model
diff --git a/ci.nix b/ci.nix
index 6a8f33d7..9b95f817 100644
--- a/ci.nix
+++ b/ci.nix
@@ -22,19 +22,19 @@ in
       xo-facet
       xo-printable2
       xo-alloc2
+      xo-refcnt
+      xo-reflect
+      xo-stringtable2
+      xo-object2
       xo-gc
       xo-allocutil
-      xo-refcnt
       xo-testutil
-      xo-reflect
       xo-ratio
       xo-unit
       xo-callback
       xo-alloc
-      xo-stringtable2
       xo-object
       xo-type
-      xo-object2
       xo-procedure2
       xo-numeric
       xo-ordinaltree
diff --git a/pkgs/xo-stringtable2.nix b/pkgs/xo-stringtable2.nix
index 7ca97419..c31dacd7 100644
--- a/pkgs/xo-stringtable2.nix
+++ b/pkgs/xo-stringtable2.nix
@@ -7,8 +7,6 @@
   xo-printable2,
   xo-arena,
   xo-cmake,
-#  xo-reflectutil,
-#  xo-indentlog,
 } :
 
 stdenv.mkDerivation (finalattrs:
@@ -28,7 +26,5 @@ stdenv.mkDerivation (finalattrs:
       xo-alloc2
       xo-printable2
       xo-arena
-#      xo-reflectutil
-#      xo-indentlog
     ];
   })
diff --git a/shells.nix b/shells.nix
index b2856597..95d49679 100644
--- a/shells.nix
+++ b/shells.nix
@@ -324,6 +324,7 @@ in
     arena          = pkgs.xo-arena;
     facet          = pkgs.xo-facet;
     alloc2         = pkgs.xo-alloc2;
+    object2        = pkgs.xo-object2;
     gc             = pkgs.xo-gc;
     allocutil      = pkgs.xo-allocutil;
     refcnt         = pkgs.xo-refcnt;
@@ -340,7 +341,6 @@ in
     stringtable2   = pkgs.xo-stringtable2;
     object         = pkgs.xo-object;
     type           = pkgs.xo-type;
-    object2        = pkgs.xo-object2;
     procedure2     = pkgs.xo-procedure2;
     numeric        = pkgs.xo-numeric;
     ordinaltree    = pkgs.xo-ordinaltree;
diff --git a/xo-cmake/cmake/xo_macros/xo_cxx.cmake b/xo-cmake/cmake/xo_macros/xo_cxx.cmake
index 6d10beb7..75ac9a74 100644
--- a/xo-cmake/cmake/xo_macros/xo_cxx.cmake
+++ b/xo-cmake/cmake/xo_macros/xo_cxx.cmake
@@ -1855,7 +1855,7 @@ function(xo_add_genfacetimpl)
         # dependency (e.g. in a standalone nix build).
         #
         if(NOT TARGET share_${GF_FACET_PKG})
-            message(FATAL_ERROR "xo_add_genfacetimpl: share_${GF_FACET_PKG} not available; skipping ${GF_TARGET}")
+            message(STATUS "xo_add_genfacetimpl: share_${GF_FACET_PKG} not available; skipping ${GF_TARGET}")
             return()
         endif()
         get_target_property(_facet_dir share_${GF_FACET_PKG} path)
diff --git a/xo.nix b/xo.nix
index 9c2b1b22..58854f28 100644
--- a/xo.nix
+++ b/xo.nix
@@ -27,30 +27,30 @@ let
   xoPackages = {
     xo-cmake          = callPackage pkgs/xo-cmake.nix          { stdenv = jitStdenv; };
     xo-indentlog      = callPackage pkgs/xo-indentlog.nix      { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
+    xo-subsys         = callPackage pkgs/xo-subsys.nix         { stdenv = jitStdenv; };
+    xo-flatstring     = callPackage pkgs/xo-flatstring.nix     { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
     xo-randomgen      = callPackage pkgs/xo-randomgen.nix      { stdenv = jitStdenv;                   buildExamples = true; };
     xo-reflectutil    = callPackage pkgs/xo-reflectutil.nix    { stdenv = jitStdenv; };
     xo-arena          = callPackage pkgs/xo-arena.nix          { stdenv = jitStdenv; buildDocs = true; };
     xo-facet          = callPackage pkgs/xo-facet.nix          { stdenv = jitStdenv; };
     xo-printable2     = callPackage pkgs/xo-printable2.nix     { stdenv = jitStdenv; };
     xo-alloc2         = callPackage pkgs/xo-alloc2.nix         { stdenv = jitStdenv; buildDocs = true; };
-    xo-allocutil      = callPackage pkgs/xo-allocutil.nix      { stdenv = jitStdenv; };
     xo-refcnt         = callPackage pkgs/xo-refcnt.nix         { stdenv = jitStdenv; };
-    xo-subsys         = callPackage pkgs/xo-subsys.nix         { stdenv = jitStdenv; };
-    xo-testutil       = callPackage pkgs/xo-testutil.nix       { stdenv = jitStdenv; };
-    xo-flatstring     = callPackage pkgs/xo-flatstring.nix     { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
-    xo-pyutil         = callPackage pkgs/xo-pyutil.nix         { stdenv = jitStdenv; };
     xo-reflect        = callPackage pkgs/xo-reflect.nix        { stdenv = jitStdenv; };
+    xo-stringtable2   = callPackage pkgs/xo-stringtable2.nix   { stdenv = jitStdenv; };
+    xo-object2        = callPackage pkgs/xo-object2.nix        { stdenv = jitStdenv; };
+    xo-gc             = callPackage pkgs/xo-gc.nix             { stdenv = jitStdenv; buildDocs = true; };
+    xo-allocutil      = callPackage pkgs/xo-allocutil.nix      { stdenv = jitStdenv; };
+    xo-testutil       = callPackage pkgs/xo-testutil.nix       { stdenv = jitStdenv; };
+    xo-pyutil         = callPackage pkgs/xo-pyutil.nix         { stdenv = jitStdenv; };
     xo-pyreflect      = callPackage pkgs/xo-pyreflect.nix      { stdenv = jitStdenv; };
     xo-ratio          = callPackage pkgs/xo-ratio.nix          { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
     xo-unit           = callPackage pkgs/xo-unit.nix           { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
     xo-pyunit         = callPackage pkgs/xo-pyunit.nix         { stdenv = jitStdenv; };
     xo-callback       = callPackage pkgs/xo-callback.nix       { stdenv = jitStdenv; };
     xo-alloc          = callPackage pkgs/xo-alloc.nix          { stdenv = jitStdenv; buildDocs = true; };
-    xo-stringtable2   = callPackage pkgs/xo-stringtable2.nix   { stdenv = jitStdenv; };
-    xo-gc             = callPackage pkgs/xo-gc.nix             { stdenv = jitStdenv; buildDocs = true; };
     xo-object         = callPackage pkgs/xo-object.nix         { stdenv = jitStdenv; };
     xo-type           = callPackage pkgs/xo-type.nix           { stdenv = jitStdenv; };
-    xo-object2        = callPackage pkgs/xo-object2.nix        { stdenv = jitStdenv; };
     xo-procedure2     = callPackage pkgs/xo-procedure2.nix     { stdenv = jitStdenv; };
     xo-numeric        = callPackage pkgs/xo-numeric.nix        { stdenv = jitStdenv; };
     xo-ordinaltree    = callPackage pkgs/xo-ordinaltree.nix    { stdenv = jitStdenv; };