libnsl: Add alpine patches to fix w/musl

pkgs/development/libraries/libnsl/cdefs.patch

@@ -0,0 +1,30 @@
+--- a/src/rpcsvc/nislib.h
++++ b/src/rpcsvc/nislib.h
+@@ -19,6 +19,7 @@
+ #ifndef	__RPCSVC_NISLIB_H__
+ #define	__RPCSVC_NISLIB_H__
+ 
++#include <sys/cdefs.h>
+ #include <features.h>
+ 
+ __BEGIN_DECLS
+--- a/src/rpcsvc/ypclnt.h
++++ b/src/rpcsvc/ypclnt.h
+@@ -20,6 +20,7 @@
+ #ifndef	__RPCSVC_YPCLNT_H__
+ #define	__RPCSVC_YPCLNT_H__
+ 
++#include <sys/cdefs.h>
+ #include <features.h>
+ 
+ /* Some defines */
+--- a/src/rpcsvc/ypupd.h
++++ b/src/rpcsvc/ypupd.h
+@@ -33,6 +33,7 @@
+ #ifndef __RPCSVC_YPUPD_H__
+ #define __RPCSVC_YPUPD_H__
+ 
++#include <sys/cdefs.h>
+ #include <features.h>
+ 
+ #include <rpc/rpc.h>

pkgs/development/libraries/libnsl/default.nix

@@ -14,6 +14,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkgconfig ];
   buildInputs = [ libtirpc ];
 
+  patches = stdenv.lib.optionals stdenv.hostPlatform.isMusl [ ./cdefs.patch ./nis_h.patch ];
+
   meta = with stdenv.lib; {
     description = "Client interface library for NIS(YP) and NIS+";
     homepage = https://github.com/thkukuk/libnsl;

pkgs/development/libraries/libnsl/nis_h.patch

@@ -0,0 +1,45 @@
+--- a/src/rpcsvc/nis.h
++++ b/src/rpcsvc/nis.h
+@@ -32,6 +32,7 @@
+ #ifndef _RPCSVC_NIS_H
+ #define _RPCSVC_NIS_H 1
+ 
++#include <sys/cdefs.h>
+ #include <features.h>
+ #include <rpc/rpc.h>
+ #include <rpcsvc/nis_tags.h>
+@@ -56,6 +57,34 @@
+  *                                              <kukuk@suse.de>
+  */
+ 
++#ifndef rawmemchr
++#define rawmemchr(s,c) memchr((s),(size_t)-1,(c))
++#endif
++
++#ifndef __asprintf
++#define __asprintf asprintf
++#endif
++
++#ifndef __mempcpy
++#define __mempcpy mempcpy
++#endif
++
++#ifndef __strtok_r
++#define __strtok_r strtok_r
++#endif
++
++#ifndef __always_inline
++#define __always_inline __attribute__((__always_inline__))
++#endif
++
++#ifndef TEMP_FAILURE_RETRY
++#define TEMP_FAILURE_RETRY(exp) ({ \
++typeof (exp) _rc; \
++ do { \
++  _rc = (exp); \
++ } while (_rc == -1 && errno == EINTR); \
++ _rc; })
++#endif
+ 
+ #ifndef __nis_object_h
+ #define __nis_object_h