gnu: Add erlang.

* gnu/packages/erlang.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Co-authored by: Leo Famulari <leo@famulari.name>
Co-authored by: Pjotr Prins <pjotr.public12@thebird.nl>

2 files changed, 180 insertions, 0 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index 3e0082b8fa..956be9b4b5 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -109,6 +109,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/engineering.scm			\
   %D%/packages/enlightenment.scm		\
   %D%/packages/entr.scm				\
+  %D%/packages/erlang.scm			\
   %D%/packages/fcitx.scm			\
   %D%/packages/feh.scm                          \
   %D%/packages/figlet.scm			\
diff --git a/gnu/packages/erlang.scm b/gnu/packages/erlang.scm
new file mode 100644
index 0000000000..39da7e939b
--- /dev/null
+++ b/gnu/packages/erlang.scm
@@ -0,0 +1,179 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Steve Sprang <scs@stevesprang.com>
+;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
+;;; Copyright © 2016 Pjotr Prins <pjotr.public12@thebird.nl>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages erlang)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix download)
+  #:use-module (guix packages)
+  #:use-module (gnu packages autotools)
+  #:use-module (gnu packages fontutils)
+  #:use-module (gnu packages gl)
+  #:use-module (gnu packages ncurses)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages tls)
+  #:use-module (gnu packages wxwidgets))
+
+(define-public erlang
+  (package
+    (name "erlang")
+    ;; When updating, remember to update the hash of erlang-manpages!
+    (version "19.0")
+    (source (origin
+              (method url-fetch)
+              ;; The tarball from http://erlang.org/download contains many
+              ;; pre-compiled files, so we use this snapshot of the source
+              ;; repository.
+              (uri (string-append "https://github.com/erlang/otp/archive/OTP-"
+                                  version ".tar.gz"))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1dxyz6x1yfv33fd0xfry2ihylkyfa2d655q1vxvbz8dflyd64yqh"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("perl" ,perl)
+       ("autoconf" ,autoconf)
+       ("automake" ,automake)
+
+       ;; Erlang's documentation is distributed in a separate tarball.
+       ("erlang-manpages"
+        ,(origin
+           (method url-fetch)
+           (uri (string-append "http://erlang.org/download/otp_doc_man_"
+                               version ".tar.gz"))
+           (sha256
+            (base32
+             "07j0l7ary936hil38xr3hvfw6j74pshkyyi98kc9cassbbcdd8y7"))))))
+    (inputs
+     `(("ncurses" ,ncurses)
+       ("openssl" ,openssl)
+       ("wxwidgets" ,wxwidgets)))
+    (propagated-inputs
+     `(("fontconfig" ,fontconfig)
+       ("glu" ,glu)
+       ("mesa" ,mesa)))
+    (arguments
+     `(#:test-target "release_tests"
+       #:configure-flags
+       (list "--disable-saved-compile-time"
+             "--enable-dynamic-ssl-lib"
+             "--enable-native-libs"
+             "--enable-shared-zlib"
+             "--enable-smp-support"
+             "--enable-threads"
+             "--enable-wx"
+             (string-append "--with-ssl=" (assoc-ref %build-inputs "openssl")))
+       #:modules ((srfi srfi-19) ; make-time, et cetera.
+                  (guix build utils)
+                  (guix build gnu-build-system))
+       #:phases
+       (modify-phases %standard-phases
+         ;; The are several code fragments that embed timestamps into the
+         ;; output. Here, we alter those fragments to use the value of
+         ;; SOURCE_DATE_EPOCH instead.
+         (add-after 'unpack 'remove-timestamps
+           (lambda _
+             (let ((source-date-epoch
+                     (time-utc->date
+                       (make-time time-utc 0 (string->number
+                                               (getenv "SOURCE_DATE_EPOCH"))))))
+               (substitute* "lib/reltool/src/reltool_target.erl"
+                 (("Date = date\\(\\),")
+                  (string-append "Date = "
+                                 (date->string source-date-epoch
+                                               "'{~Y,~m,~d}',"))))
+               (substitute* "lib/reltool/src/reltool_target.erl"
+                 (("Time = time\\(\\),")
+                  (string-append "Time = "
+                                 (date->string source-date-epoch
+                                               "'{~H,~M,~S}',"))))
+               (substitute* '("lib/reltool/src/reltool_target.erl"
+                              "lib/sasl/src/systools_make.erl")
+                 (("date\\(\\), time\\(\\),")
+                  (date->string source-date-epoch
+                                "{~Y,~m,~d}, {~H,~M,~S},")))
+               (substitute* '("lib/dialyzer/test/small_SUITE_data/src/gs_make.erl"
+                              "lib/gs/src/gs_make.erl")
+                 (("tuple_to_list\\(date\\(\\)\\),tuple_to_list\\(time\\(\\)\\)")
+                  (date->string
+                    source-date-epoch
+                    "tuple_to_list({~Y,~m,~d}), tuple_to_list({~H,~M,~S})")))
+               (substitute* "lib/snmp/src/compile/snmpc_mib_to_hrl.erl"
+                 (("\\{Y,Mo,D\\} = date\\(\\),")
+                  (date->string source-date-epoch
+                                "{Y,Mo,D} = {~Y,~m,~d},")))
+               (substitute* "lib/snmp/src/compile/snmpc_mib_to_hrl.erl"
+                 (("\\{H,Mi,S\\} = time\\(\\),")
+                  (date->string source-date-epoch
+                                "{H,Mi,S} = {~H,~M,~S},"))))))
+         (add-after 'patch-source-shebangs 'patch-source-env
+           (lambda _
+             (let ((escripts
+                    (append
+                     (find-files "." "\\.escript")
+                     (find-files "lib/stdlib/test/escript_SUITE_data/")
+                     '("erts/lib_src/utils/make_atomics_api"
+                       "erts/preloaded/src/add_abstract_code"
+                       "lib/diameter/bin/diameterc"
+                       "lib/reltool/examples/display_args"
+                       "lib/reltool/examples/mnesia_core_dump_viewer"
+                       "lib/snmp/src/compile/snmpc.src"
+                       "make/verify_runtime_dependencies"
+                       "make/emd2exml.in"))))
+               (substitute* escripts
+                 (("/usr/bin/env") (which "env"))))))
+         (add-before 'configure 'set-erl-top
+           (lambda _
+             (setenv "ERL_TOP" (getcwd))))
+         (add-before 'configure 'autoconf
+           (lambda _ (zero? (system* "./otp_build" "autoconf"))))
+         (add-after 'install 'patch-erl
+           ;; This only works after install.
+           (lambda _
+             (substitute* (string-append (assoc-ref %outputs "out") "/bin/erl")
+               (("sed") (which "sed")))))
+         (add-after 'install 'install-doc
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (manpages (assoc-ref inputs "erlang-manpages"))
+                    (share (string-append out "/share/")))
+             (mkdir-p share)
+             (mkdir-p (string-append share "/misc/erlang"))
+             (with-directory-excursion share
+               (and
+                 (zero? (system* "tar" "xvf" manpages))
+                 (rename-file "COPYRIGHT"
+                              (string-append share "/misc/erlang/COPYRIGHT"))
+                 ;; Delete superfluous files.
+                 (for-each delete-file '("PR.template"
+                                         "README"))))))))))
+    (home-page "http://erlang.org/")
+    (synopsis "The Erlang programming language")
+    (description
+     "Erlang is a programming language used to build massively
+scalable soft real-time systems with requirements on high
+availability.  Some of its uses are in telecoms, banking, e-commerce,
+computer telephony and instant messaging.  Erlang's runtime system has
+built-in support for concurrency, distribution and fault tolerance.")
+    ;; Erlang is distributed under the Apache License 2.0, but some components
+    ;; have other licenses. See 'system/COPYRIGHT' in the source distribution.
+    (license (list license:asl2.0 license:bsd-2 license:bsd-3 license:expat
+                   license:lgpl2.0+ license:tcl/tk license:zlib))))