gnu: Add sysstat.

* gnu/packages/linux.scm (sysstat): New variable.

gnu/packages/linux.scm

@@ -18,6 +18,7 @@
 ;;; Copyright © 2016 Marius Bakke <mbakke@fastmail.com>
 ;;; Copyright © 2016 Rene Saavedra <rennes@openmailbox.org>
 ;;; Copyright © 2016 ng0 <ng0@libertad.pw>
+;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -3298,3 +3299,40 @@ Extensible Firmware Interface (EFI) Boot Manager.  This application can
 create and destroy boot entries, change the boot order, change the next
 running boot option, and more.")
     (license license:gpl2+)))
+
+(define-public sysstat
+  (package
+    (name "sysstat")
+    (version "11.4.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://perso.orange.fr/sebastien.godard/"
+                                  "sysstat-" version ".tar.xz"))
+              (sha256
+               (base32
+                "0f8gk1hma3bk198ziwrhh5jhisnbbgc1v4rxhny58n0zjzw0gm0z"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f ; No test suite.
+       ;; Without this flag, it tries to install the man pages with group 'root'
+       ;; and fails because /etc/passwd lacks an entry for the root user.
+       #:configure-flags
+       (list "--disable-file-attr"
+             (string-append "conf_dir=" (assoc-ref %outputs "out") "/etc"))
+       #:phases
+       (modify-phases %standard-phases
+         ;; The build process tries to create '/var/lib/sa', so we skip that
+         ;; instruction.
+         (add-after 'build 'skip-touching-var
+           (lambda _
+             (substitute* "Makefile"
+               (("mkdir -p \\$\\(DESTDIR\\)\\$\\(SA_DIR\\)")
+                ""))
+             #t)))))
+    (home-page "http://sebastien.godard.pagesperso-orange.fr/")
+    (synopsis "Performance monitoring tools for Linux")
+    (description "The sysstat utilities are a collection of performance
+monitoring tools for Linux.  These include @code{mpstat}, @code{iostat},
+@code{tapestat}, @code{cifsiostat}, @code{pidstat}, @code{sar}, @code{sadc},
+@code{sadf} and @code{sa}.")
+    (license license:gpl2+)))