gnu: pciutils: Build fixes for the Hurd.

* gnu/packages/linux.scm (kmod)[supported-systems]: Remove the Hurd.
* gnu/packages/patches/pciutils-hurd-configure.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/pciutils.scm (pciutils): Use it.
[inputs]: Include kmod only for supported systems.

gnu/local.mk

@@ -1281,6 +1281,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/p7zip-remove-unused-code.patch		\
   %D%/packages/patches/pam-mount-luks2-support.patch		\
   %D%/packages/patches/pango-skip-libthai-test.patch		\
+  %D%/packages/patches/pciutils-hurd-configure.patch		\
   %D%/packages/patches/sdl-pango-api_additions.patch		\
   %D%/packages/patches/sdl-pango-blit_overflow.patch		\
   %D%/packages/patches/sdl-pango-fillrect_crash.patch		\

gnu/packages/linux.scm

@@ -2784,6 +2784,7 @@ to use Linux' inotify mechanism, which allows file accesses to be monitored.")
                          '("insmod" "rmmod" "lsmod" "modprobe"
                            "modinfo" "depmod"))
                #t))))))
+    (supported-systems (delete "i586-gnu" %supported-systems))
     (home-page "https://www.kernel.org/")
     (synopsis "Kernel module tools")
     (description "Kmod is a set of tools to handle common tasks with Linux

gnu/packages/patches/pciutils-hurd-configure.patch

@@ -0,0 +1,35 @@
+Add ability to detect GNU/Hurd when configuring.
+
+Adapted from https://git.hadrons.org/cgit/debian/pkgs/pciutils.git/tree/debian/patches/00-configure-hurd.patch
+
+From e39a3af22501234a91cf28e8c57b45f9379f9101 Mon Sep 17 00:00:00 2001
+From: Damien Zammit <damien@zamaudio.com>
+Date: Fri, 26 Oct 2018 09:24:04 -0400
+Subject: [PATCH 2/2] Add ability to detect GNU/Hurd when configuring
+
+---
+ lib/configure |    6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/lib/configure
++++ b/lib/configure
+@@ -25,7 +25,7 @@ if [ -z "$HOST" ] ; then
+ 		proc=`/usr/sbin/lsdev -C -c processor -S available -F name | head -1`
+ 		cpu=`/usr/sbin/lsattr -F value -l $proc -a type | sed 's/_.*//'`
+ 	else
+-		cpu=`uname -m | sed 's/^i.86$/i386/;s/^sun4u$/sparc64/;s/^i86pc$/i386/;s/^BePC$/i386/;s/^BeMac$/powerpc/;s/^BeBox$/powerpc/'`
++		cpu=`uname -m | sed 's/^i.86-AT386/i386/;s/^i.86$/i386/;s/^sun4u$/sparc64/;s/^i86pc$/i386/;s/^BePC$/i386/;s/^BeMac$/powerpc/;s/^BeBox$/powerpc/'`
+ 	fi
+ 	if [ "$sys" = "DragonFly" ]
+ 	then
+@@ -39,6 +39,10 @@ if [ -z "$HOST" ] ; then
+ 	then
+ 		sys=cygwin
+ 	fi
++	if [ "$sys" = "GNU" ]
++	then
++		sys=gnu
++	fi
+ 	HOST=${3:-$cpu-$sys}
+ fi
+ [ -n "$RELEASE" ] && rel="${RELEASE}"

gnu/packages/pciutils.scm

@@ -3,6 +3,7 @@
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,8 +26,10 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix utils)
   #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages hurd)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages base))
 
@@ -39,6 +42,7 @@
               (uri (string-append
                     "mirror://kernel.org/software/utils/pciutils/pciutils-"
                     version ".tar.xz"))
+              (patches (search-patches "pciutils-hurd-configure.patch"))
               (sha256
                (base32
                 "0mb0f2phdcmp4kfiqsszn2k6nlln0w160ffzrjjv4bbfjwrgfzzn"))))
@@ -100,7 +104,11 @@
      `(("which" ,which)
        ("pkg-config" ,pkg-config)))
     (inputs
-     `(("kmod" ,kmod)
+     `(,@(if (member (or (%current-target-system)
+                         (%current-system))
+                     (package-supported-systems kmod))
+             `(("kmod" ,kmod))
+             '())
        ("zlib" ,zlib)))
     (home-page "https://mj.ucw.cz/sw/pciutils/")
     (synopsis "Programs for inspecting and manipulating PCI devices")