gnu: Add haproxy.

* gnu/packages/networking.scm (haproxy): New variable.

gnu/packages/networking.scm

@@ -37,6 +37,7 @@
 ;;; Copyright © 2019 Daniel Schaefer <git@danielschaefer.me>
 ;;; Copyright © 2019 Diego N. Barbato <dnbarbato@posteo.de>
 ;;; Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
+;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -65,6 +66,7 @@
   #:use-module (guix build-system perl)
   #:use-module (guix build-system python)
   #:use-module (guix build-system trivial)
+  #:use-module (guix utils)
   #:use-module (gnu packages)
   #:use-module (gnu packages admin)
   #:use-module (gnu packages adns)
@@ -2891,3 +2893,46 @@ cables.")
                    (license:non-copyleft ; slirpvde
                     "file://COPYING.slirpvde"
                     "See COPYING.slirpvde in the distribution.")))))
+
+(define-public haproxy
+  (package
+    (name "haproxy")
+    (version "2.1.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://www.haproxy.org/download/"
+                                  (version-major+minor version)
+                                  "/src/haproxy-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0n8bw3d6gikr8c56ycrvksp1sl0b4yfzp19867cxkl3l0daqwrxv"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:make-flags
+       (let* ((out (assoc-ref %outputs "out")))
+         (list (string-append "PREFIX=" out)
+               (string-append "DOCDIR=" out "/share/" ,name)
+               "TARGET=linux-glibc"
+               "USE_LUA=1"
+               "USE_OPENSSL=1"
+               "USE_ZLIB=1"
+               "USE_PCRE_2=1"))
+       #:tests? #f  ; there are only regression tests, using varnishtest
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure))))
+    (inputs
+     `(("lua" ,lua)
+       ("openssl" ,openssl)
+       ("pcre2" ,pcre2)
+       ("zlib" ,zlib)))
+    (home-page "https://www.haproxy.org/")
+    (synopsis "Reliable, high performance TCP/HTTP load balancer")
+    (description "HAProxy is a free, very fast and reliable solution offering
+high availability, load balancing, and proxying for TCP and HTTP-based
+applications.  It is particularly suited for web sites crawling under very
+high loads while needing persistence or Layer7 processing.  Supporting tens of
+thousands of connections is clearly realistic with today's hardware.")
+    (license (list license:gpl2+
+                   license:lgpl2.1
+                   license:lgpl2.1+))))