Got rid of ifdefs for long-obsolete GUSI versions.
diff --git a/Include/pyport.h b/Include/pyport.h
index b311bd8..86bbab2 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -117,13 +117,6 @@
 
 #include <sys/select.h>
 
-#else /* !HAVE_SYS_SELECT_H */
-
-#ifdef USE_GUSI1
-/* If we don't have sys/select the definition may be in unistd.h */
-#include <GUSI.h>
-#endif
-
 #endif /* !HAVE_SYS_SELECT_H */
 
 /*******************************
diff --git a/Mac/Include/pyconfig.h b/Mac/Include/pyconfig.h
index ac4e15a..15bef5a 100644
--- a/Mac/Include/pyconfig.h
+++ b/Mac/Include/pyconfig.h
@@ -36,7 +36,7 @@
 #define macintosh
 #endif
 
-#if defined(USE_GUSI1) || defined(USE_GUSI2)
+#if defined(USE_GUSI2)
 #define USE_GUSI
 #endif
 
diff --git a/Mac/Modules/macmodule.c b/Mac/Modules/macmodule.c
index 93dfaee..8b3bcc5 100644
--- a/Mac/Modules/macmodule.c
+++ b/Mac/Modules/macmodule.c
@@ -46,9 +46,6 @@
 #undef S_IWRITE
 #undef S_IEXEC
 
-#ifdef USE_GUSI1
-#include <GUSI.h>
-#endif /* USE_GUSI1 */
 #include <sys/types.h>
 #include <sys/stat.h>
 #else /* USE_GUSI */
@@ -181,17 +178,7 @@
 	PyObject *self;
 	PyObject *args;
 {
-#ifdef USE_GUSI1
-	PyObject *rv;
-	
-	/* Change MacOS's idea of wd too */
-	rv = mac_1str(args, chdir);
-	PyMac_FixGUSIcd();
-	return rv;
-#else
 	return mac_1str(args, chdir);
-#endif
-
 }
 
 static PyObject *
@@ -205,11 +192,8 @@
 	Py_BEGIN_ALLOW_THREADS
 	res = close(fd);
 	Py_END_ALLOW_THREADS
-#ifndef USE_GUSI1
-	/* GUSI gives surious errors here? */
 	if (res < 0)
 		return mac_error();
-#endif
 	Py_INCREF(Py_None);
 	return Py_None;
 }
@@ -385,11 +369,7 @@
 	if (!PyArg_ParseTuple(args, "s|i", &path, &mode))
 		return NULL;
 	Py_BEGIN_ALLOW_THREADS
-#ifdef USE_GUSI1
-	res = mkdir(path);
-#else
 	res = mkdir(path, mode);
-#endif
 	Py_END_ALLOW_THREADS
 	if (res < 0)
 		return mac_error();
diff --git a/Mac/Python/macgetcompiler.c b/Mac/Python/macgetcompiler.c
index eb9c3c4..46c0bf3 100644
--- a/Mac/Python/macgetcompiler.c
+++ b/Mac/Python/macgetcompiler.c
@@ -35,15 +35,11 @@
 #include "Python.h"
 
 #ifdef __MWERKS__
-#ifdef USE_GUSI1
-#define HASGUSI " GUSI1"
-#else
 #ifdef USE_GUSI2
 #define HASGUSI " GUSI2"
 #else
 #define HASGUSI ""
 #endif
-#endif
 
 #ifdef WITH_THREAD
 #define HASTHREAD " THREADS"
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 74e28f2..4366b17 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -149,9 +149,7 @@
 #  include <netdb.h>
 typedef size_t socklen_t;
 # else
-#  ifndef USE_GUSI1
 #   include <arpa/inet.h>
-#  endif
 # endif
 
 # ifndef RISCOS
@@ -181,11 +179,6 @@
 # define O_NDELAY O_NONBLOCK	/* For QNX only? */
 #endif
 
-#ifdef USE_GUSI1
-/* fdopen() isn't declared in stdio.h (sigh) */
-# include <GUSI.h>
-#endif
-
 #include "addrinfo.h"
 
 #ifndef HAVE_INET_PTON
@@ -2332,11 +2325,7 @@
 	if (!PyArg_ParseTuple(args, "s:inet_aton", &ip_addr)) {
 		return NULL;
 	}
-#ifdef USE_GUSI1
-	packed_addr = inet_addr(ip_addr).s_addr;
-#else
 	packed_addr = inet_addr(ip_addr);
-#endif
 
 	if (packed_addr == INADDR_NONE) {	/* invalid address */
 		PyErr_SetString(PySocket_Error,
@@ -3331,11 +3320,7 @@
 {
 	if(af == AF_INET){
 		long packed_addr;
-#ifdef USE_GUSI1
-		packed_addr = (long)inet_addr(src).s_addr;
-#else
 		packed_addr = inet_addr(src);
-#endif
 		if (packed_addr == INADDR_NONE)
 			return 0;
 		memcpy(dst, &packed_addr, 4);
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 9396826..dda2ce4 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -9,13 +9,6 @@
 #ifdef macintosh
 #include <time.h>
 #include <OSUtils.h>
-#ifdef USE_GUSI211
-/* GUSI, the I/O library which has the time() function and such uses the
-** Mac epoch of 1904. MSL, the C library which has localtime() and so uses
-** the ANSI epoch of 1900.
-*/
-#define GUSI_TO_MSL_EPOCH (4*365*24*60*60)
-#endif /* USE_GUSI2 */
 #else
 #include <sys/types.h>
 #endif
@@ -259,9 +252,6 @@
 {
 	struct tm *p;
 	errno = 0;
-#if defined(macintosh) && defined(USE_GUSI204)
-	when = when + GUSI_TO_MSL_EPOCH;
-#endif
 	p = function(&when);
 	if (p == NULL) {
 #ifdef EINVAL
@@ -487,9 +477,6 @@
 			return NULL;
 		tt = (time_t)dt;
 	}
-#if defined(macintosh) && defined(USE_GUSI204)
-	tt = tt + GUSI_TO_MSL_EPOCH;
-#endif
 	p = ctime(&tt);
 	if (p == NULL) {
 		PyErr_SetString(PyExc_ValueError, "unconvertible time");
@@ -526,9 +513,6 @@
 				"mktime argument out of range");
 		return NULL;
 	}
-#if defined(macintosh) && defined(USE_GUSI211)
-	tt = tt - GUSI_TO_MSL_EPOCH;
-#endif
 	return PyFloat_FromDouble((double)tt);
 }
 
diff --git a/Python/import.c b/Python/import.c
index 1a06153..3c87506 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1139,9 +1139,6 @@
 
 #elif defined(macintosh)
 #include <TextUtils.h>
-#ifdef USE_GUSI1
-#include "TFileSpec.h"		/* for Path2FSSpec() */
-#endif
 
 #elif defined(__MACH__) && defined(__APPLE__) && defined(HAVE_DIRENT_H)
 #include <sys/types.h>
@@ -1215,25 +1212,7 @@
 	if (Py_GETENV("PYTHONCASEOK") != NULL)
 		return 1;
 
-#ifndef USE_GUSI1
 	err = FSMakeFSSpec(0, 0, Pstring(buf), &fss);
-#else
-	/* GUSI's Path2FSSpec() resolves all possible aliases nicely on
-	   the way, which is fine for all directories, but here we need
-	   the original name of the alias file (say, Dlg.ppc.slb, not
-	   toolboxmodules.ppc.slb). */
-	char *colon;
-	err = Path2FSSpec(buf, &fss);
-	if (err == noErr) {
-		colon = strrchr(buf, ':'); /* find filename */
-		if (colon != NULL)
-			err = FSMakeFSSpec(fss.vRefNum, fss.parID,
-					   Pstring(colon+1), &fss);
-		else
-			err = FSMakeFSSpec(fss.vRefNum, fss.parID,
-					   fss.name, &fss);
-	}
-#endif
 	if (err) {
 		PyErr_Format(PyExc_NameError,
 		     "Can't find file for module %.100s\n(filename %.300s)",