diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index f9250d6faccbea..ac20129cd30fcc 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -675,9 +675,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define if you have the mpc library (-lmpc).  */
 /* #undef HAVE_LIBMPC */
 
-/* Define if you have the nsl library (-lnsl).  */
-#define HAVE_LIBNSL 1
-
 /* Define if you have the seq library (-lseq).  */
 /* #undef HAVE_LIBSEQ */
 
diff --git a/Tools/c-analyzer/cpython/_parser.py b/Tools/c-analyzer/cpython/_parser.py
index 9bd54db0f59c51..04618c1814e507 100644
--- a/Tools/c-analyzer/cpython/_parser.py
+++ b/Tools/c-analyzer/cpython/_parser.py
@@ -120,7 +120,6 @@ def clean_lines(text):
 # possible system-installed headers, just in case
 Modules/_tkinter.c	/usr/include/tcl8.6
 Modules/_uuidmodule.c	/usr/include/uuid
-Modules/nismodule.c	/usr/include/tirpc
 Modules/tkappinit.c	/usr/include/tcl
 
 # @end=tsv@
diff --git a/Tools/c-analyzer/cpython/globals-to-fix.tsv b/Tools/c-analyzer/cpython/globals-to-fix.tsv
index 3c58a32effff9f..7ca14b91c841d4 100644
--- a/Tools/c-analyzer/cpython/globals-to-fix.tsv
+++ b/Tools/c-analyzer/cpython/globals-to-fix.tsv
@@ -454,9 +454,6 @@ Modules/_tkinter.c	-	trbInCmd	-
 ##-----------------------
 ## initialized once
 
-## pre-allocated buffer
-Modules/nismodule.c	nisproc_maplist_2	res	-
-
 ## other
 Include/datetime.h	-	PyDateTimeAPI	-
 Modules/_ctypes/cfield.c	_ctypes_get_fielddesc	initialized	-
diff --git a/Tools/c-analyzer/cpython/ignored.tsv b/Tools/c-analyzer/cpython/ignored.tsv
index f358f301a5b065..5b08c74e1de51d 100644
--- a/Tools/c-analyzer/cpython/ignored.tsv
+++ b/Tools/c-analyzer/cpython/ignored.tsv
@@ -282,8 +282,6 @@ Modules/cmathmodule.c	-	tanh_special_values	-
 Modules/config.c	-	_PyImport_Inittab	-
 Modules/faulthandler.c	-	faulthandler_handlers	-
 Modules/getnameinfo.c	-	gni_afdl	-
-Modules/nismodule.c	-	TIMEOUT	-
-Modules/nismodule.c	-	aliases	-
 Modules/posixmodule.c	os_getxattr_impl	buffer_sizes	-
 Modules/posixmodule.c	os_listxattr_impl	buffer_sizes	-
 Modules/posixmodule.c	-	posix_constants_confstr	-