gnu: Add lm-sensors.

* gnu/packages/patches/lm-sensors-hwmon-attrs.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/linux.scm (lm-sensors): New variable.

gnu-system.am

@@ -337,6 +337,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/libtool-skip-tests.patch			\
   gnu/packages/patches/libtool-skip-tests-for-mips.patch	\
   gnu/packages/patches/libssh-CVE-2014-0017.patch		\
+  gnu/packages/patches/lm-sensors-hwmon-attrs.patch		\
   gnu/packages/patches/luit-posix.patch				\
   gnu/packages/patches/m4-gets-undeclared.patch			\
   gnu/packages/patches/m4-readlink-EINVAL.patch			\

gnu/packages/linux.scm

@@ -23,8 +23,7 @@ (define-module (gnu packages linux)
   #:use-module ((guix licenses)
                 #:hide (zlib))
   #:use-module (gnu packages)
-  #:use-module ((gnu packages compression)
+  #:use-module ((gnu packages compression) #:prefix guix:)
-                #:renamer (symbol-prefix-proc 'guix:))
   #:use-module (gnu packages flex)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages gperf)
@@ -44,6 +43,9 @@ (define-module (gnu packages linux)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages check)
+  #:use-module (gnu packages maths)
+  #:use-module (gnu packages which)
+  #:use-module (gnu packages rrdtool)
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix build-system gnu)
@@ -1366,3 +1368,76 @@ (define-public wireless-tools
 Wireless LAN specific parameters and get the specific stats.")
     (home-page "http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html")
     (license gpl2+)))
+
+(define-public lm-sensors
+  (package
+    (name "lm-sensors")
+    (version "3.3.5")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "http://dl.lm-sensors.org/lm-sensors/releases/lm_sensors-"
+                    version ".tar.bz2"))
+              (sha256
+               (base32
+                "1ksgrynxgrq590nb2fwxrl1gwzisjkqlyg3ljfd1al0ibrk6mbjx"))
+              (patches (list (search-patch "lm-sensors-hwmon-attrs.patch")))))
+    (build-system gnu-build-system)
+    (inputs `(("rrdtool" ,rrdtool)
+              ("perl" ,perl)
+              ("kmod" ,kmod)
+              ("gnuplot" ,gnuplot)))
+    (native-inputs `(("pkg-config" ,pkg-config)
+                     ("flex" ,flex)
+                     ("bison" ,bison)
+                     ("which" ,which)))
+    (arguments
+     `(#:tests? #f  ; no 'check' target
+       #:make-flags (list (string-append "PREFIX=" %output)
+                          (string-append "ETCDIR=" %output "/etc")
+                          (string-append "MANDIR=" %output "/share/man"))
+       #:phases
+       (alist-delete
+        'configure
+        (alist-cons-before
+         'build 'patch-exec-paths
+         (lambda* (#:key inputs outputs #:allow-other-keys)
+           (substitute* "prog/detect/sensors-detect"
+             (("`uname")
+              (string-append "`" (assoc-ref inputs "coreutils")
+                             "/bin/uname"))
+             (("(`|\")modprobe" all open-quote)
+              (string-append open-quote
+                             (assoc-ref inputs "kmod")
+                             "/bin/modprobe")))
+           (substitute* '("prog/pwm/pwmconfig"
+                          "prog/pwm/fancontrol")
+             (("gnuplot")
+              (string-append (assoc-ref inputs "gnuplot")
+                             "/bin/gnuplot"))
+             (("cat ")
+              (string-append (assoc-ref inputs "coreutils")
+                             "/bin/cat "))
+             (("egrep ")
+              (string-append (assoc-ref inputs "grep")
+                             "/bin/egrep "))
+             (("sed -e")
+              (string-append (assoc-ref inputs "sed")
+                             "/bin/sed -e"))
+             (("cut -d")
+              (string-append (assoc-ref inputs "coreutils")
+                             "/bin/cut -d"))
+             (("sleep ")
+              (string-append (assoc-ref inputs "coreutils")
+                             "/bin/sleep "))
+             (("readlink -f")
+              (string-append (assoc-ref inputs "coreutils")
+                             "/bin/readlink -f"))))
+         %standard-phases))))
+    (home-page "http://www.lm-sensors.org/")
+    (synopsis "Utilities to read temperature/voltage/fan sensors")
+    (description
+     "lm-sensors is a hardware health monitoring package for Linux.  It allows
+you to access information from temperature, voltage, and fan speed sensors.
+It works with most newer systems.")
+    (license gpl2+)))

gnu/packages/patches/lm-sensors-hwmon-attrs.patch

@@ -0,0 +1,85 @@
+fancontrol: Deal with moving hwmon attributes
+
+Several kernel drivers have already moved their attributes from the
+hardware device to the hwmon class device, and others will follow.
+Teach fancontrol about this possibility and let it adjust the attribute
+paths transparently.
+
+Patch by Jean Delvare <khali@linux-fr.org>.
+See <http://www.lm-sensors.org/changeset/6216>.
+
+--- lm-sensors/prog/pwm/fancontrol	(revision 6172)
++++ lm-sensors/prog/pwm/fancontrol	(revision 6216)
+@@ -207,4 +207,63 @@
+ }
+ 
++function FixupDeviceFiles
++{
++	local DEVICE="$1"
++	local fcvcount pwmo tsen fan
++
++	let fcvcount=0
++	while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
++	do
++		pwmo=${AFCPWM[$fcvcount]}
++		AFCPWM[$fcvcount]=${pwmo//$DEVICE\/device/$DEVICE}
++		if [ "${AFCPWM[$fcvcount]}" != "$pwmo" ]
++		then
++			echo "Adjusing $pwmo -> ${AFCPWM[$fcvcount]}"
++		fi
++		let fcvcount=$fcvcount+1
++	done
++
++	let fcvcount=0
++	while (( $fcvcount < ${#AFCTEMP[@]} )) # go through all temp inputs
++	do
++		tsen=${AFCTEMP[$fcvcount]}
++		AFCTEMP[$fcvcount]=${tsen//$DEVICE\/device/$DEVICE}
++		if [ "${AFCTEMP[$fcvcount]}" != "$tsen" ]
++		then
++			echo "Adjusing $tsen -> ${AFCTEMP[$fcvcount]}"
++		fi
++		let fcvcount=$fcvcount+1
++	done
++
++	let fcvcount=0
++	while (( $fcvcount < ${#AFCFAN[@]} )) # go through all fan inputs
++	do
++		fan=${AFCFAN[$fcvcount]}
++		AFCFAN[$fcvcount]=${fan//$DEVICE\/device/$DEVICE}
++		if [ "${AFCFAN[$fcvcount]}" != "$fan" ]
++		then
++			echo "Adjusing $fan -> ${AFCFAN[$fcvcount]}"
++		fi
++		let fcvcount=$fcvcount+1
++	done
++}
++
++# Some drivers moved their attributes from hard device to class device
++function FixupFiles
++{
++	local DEVPATH="$1"
++	local entry device
++
++	for entry in $DEVPATH
++	do
++		device=`echo "$entry" | sed -e 's/=[^=]*$//'`
++
++		if [ -e "$device/name" ]
++		then
++			FixupDeviceFiles "$device"
++		fi
++	done
++}
++
+ # Check that all referenced sysfs files exist
+ function CheckFiles
+@@ -306,4 +365,8 @@
+ 	echo "Configuration appears to be outdated, please run pwmconfig again" >&2
+ 	exit 1
++fi
++if [ "$DIR" = "/sys/class/hwmon" ]
++then
++	FixupFiles "$DEVPATH"
+ fi
+ CheckFiles || exit 1