[PATCH 2/3] gnu: Add go-1.4.

[Efraim Flashner]

* gnu/packages/golang.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add golang.scm.
---
 gnu-system.am           |  1 +
 gnu/packages/golang.scm | 94 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 gnu/packages/golang.scm

diff --git a/gnu-system.am b/gnu-system.am
index 7105e13..1b5c1ed 100644
--- a/gnu-system.am
+++ b/gnu-system.am
@@ -137,6 +137,7 @@ GNU_SYSTEM_MODULES =                                \
   gnu/packages/gnustep.scm                     \
   gnu/packages/gnuzilla.scm                    \
   gnu/packages/gnu-pw-mgr.scm                  \
+  gnu/packages/golang.scm                      \
   gnu/packages/gperf.scm                       \
   gnu/packages/gprolog.scm                     \
   gnu/packages/gps.scm                         \
diff --git a/gnu/packages/golang.scm b/gnu/packages/golang.scm
new file mode 100644
index 0000000..cb1cbc1
--- /dev/null
+++ b/gnu/packages/golang.scm
@@ -0,0 +1,94 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Efraim Flashner <address@hidden>
+;;;
+;;; 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 golang)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix utils)
+  #:use-module (guix download)
+  #:use-module (guix packages)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages perl))
+
+;; According to https://golang.org/doc/install/gccgo, gccgo-4.8.2 includes a
+;; complete go-1.1.2 implementation, gccgo-4.9 includes a complete go-1.2
+;; implementation, and gccgo-5 a complete implementation of go-1.4.  Ultimately
+;; we hope to build go-1.5 with a bootstrap process using gccgo-5.  As of
+;; go-1.5, go cannot be bootstrapped without go-1.4, so we need to use go-1.4 
or
+;; gccgo-5.  Mips is not officially supported, but it should work if it is
+;; bootstrapped.
+
+(define-public go-1.4
+  (package
+    (name "go")
+    (version "1.4.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://storage.googleapis.com/golang/go";
+                            version ".src.tar.gz"))
+        (sha256
+         (base32
+          "0na9yqilzpvq0bjndbibfp07wr796gf252y471cip10bbdqgqiwr"))))
+    (build-system gnu-build-system)
+    (outputs '("out" "doc" "tests"))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+        (delete 'configure)
+        (add-after 'patch-generated-file-shebangs 'chdir
+          (lambda _ (chdir "src")))
+        (replace 'build
+          (let* ((bash   (assoc-ref %build-inputs "bash"))
+                 (gccgo  (assoc-ref %build-inputs "gccgo"))
+                 (output (assoc-ref %outputs "out")))
+            (setenv "CC" "gcc")
+            (setenv "GOROOT" (getcwd))
+            (setenv "GOROOT_BOOTSTRAP" gccgo)
+            (setenv "GOROOT_FINAL" output)
+            (setenv "CGO_ENABLED" "0")
+            (lambda _
+              ;; all.bash includes the tests, which fail because they require
+              ;; network access, and access to /bin
+              (zero? (system* (string-append bash "/bin/bash") "make.bash")))))
+        (replace 'install
+          (lambda* (#:key outputs #:allow-other-keys)
+            (let* ((output (assoc-ref outputs "out"))
+                   (docs   (assoc-ref outputs "doc"))
+                   (tests  (assoc-ref outputs "tests")))
+              (copy-recursively "../test" tests)
+              (delete-file-recursively "../test")
+              (copy-recursively "../api" (string-append docs "/api"))
+              (delete-file-recursively "../api")
+              (copy-recursively "../doc" (string-append docs "/doc"))
+              (delete-file-recursively "../doc")
+              (copy-recursively "../" output)))))
+       #:tests? #f))
+    (native-inputs
+     `(("gccgo" ,gccgo-4.9)
+       ("perl" ,perl)))
+    (home-page "https://golang.org/";)
+    (synopsis "Compiled, statically typed language developed by Google")
+    (description "Go, also commonly referred to as golang, is a programming
+ language developed at Google.  Designed primarily for systems programming, it
+ is a compiled, statically typed language in the tradition of C and C++, with
+garbage collection, various safety features and CSP-style concurrent 
programming
+features added.")
+    (license license:bsd-3)))
+
+(define-public go go-1.4)
-- 
2.7.0.rc3