diff --git a/src/Intrinsic.c b/src/Intrinsic.c
--- a/src/Intrinsic.c
+++ b/src/Intrinsic.c
@@ -1345,21 +1345,99 @@ FillInLangSubs(Substitution subs, XtPerDisplay pd)
}
/*
- * default path used if environment variable XFILESEARCHPATH
- * is not defined. Also substitued for %D.
- * The exact value should be documented in the implementation
- * notes for any Xt implementation.
+ Return the default search path for the function
+ XtResolvePathname to use if XFILESEARCHPATH is
+ not defined.
+
+ It returns the combination the set of values which are the 6 "stems" below,
+ prepended with "/run/current-system/profile", and $GUIX_PROFILE and
+ "$HOME/.guix-profile"
+
+ These values provide the default paths where Guix/GuixSD can expect
+ to find resources for installed packages.
*/
static const char *
-implementation_default_path(void)
+guix_default_path(void)
{
-#if defined(WIN32)
- static char xfilesearchpath[] = "";
+ static const char *search_path_default_stem[] = {
+ "/lib/X11/%L/%T/%N%C%S",
+ "/lib/X11/%l/%T/%N%C%S",
+ "/lib/X11/%T/%N%C%S",
+ "/lib/X11/%L/%T/%N%S",
+ "/lib/X11/%l/%T/%N%S",
+ "/lib/X11/%T/%N%S"
+ };
+
+#define SIZEOF_STEMS (strlen (search_pat