[PATCH 5/7] gnu: Add rustc-bootstrap.

[David Craven <david@craven.ch>]

* gnu/packages/rust.scm (rustc-bootstrap, rust-bootstrap-x86_64-1.12.0):
  New variables.
---
 gnu/packages/rust.scm | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 gnu/packages/rust.scm

diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
new file mode 100644
index 0000000..2726348
--- /dev/null
+++ b/gnu/packages/rust.scm
@@ -0,0 +1,99 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 David Craven <david@craven.ch>
+;;;
+;;; 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 rust)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages bootstrap)
+  #:use-module (gnu packages commencement)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages elf)
+  #:use-module (gnu packages gcc)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix download)
+  #:use-module (guix packages)
+  #:use-module ((guix licenses) #:prefix license:))
+
+(define rust-bootstrap-x86_64-1.12.0
+  (origin
+    (method url-fetch)
+    (uri (string-append
+          "https://static.rust-lang.org/dist/"
+          "rust-beta-x86_64-unknown-linux-gnu.tar.gz"))
+    (sha256
+     (base32
+      "1is1k93zarvxx0h7b57ga8vr9gj34b36l9la6zkph41x33gfgpvl"))))
+
+(define-public rustc-bootstrap
+  (package
+    (name "rustc-bootstrap")
+    (version "1.12.0")
+    (source rust-bootstrap-x86_64-1.12.0)
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("patchelf" ,patchelf)))
+    (inputs
+     `(("gcc-lib" ,gcc "lib")
+       ("gcc-toolchain-6" ,gcc-toolchain-6)
+       ("zlib" ,zlib)))
+    (arguments
+     `(#:tests? #f
+       #:strip-binaries? #f
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (delete 'build)
+         (replace 'install
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out"))
+                   (gcc-lib (assoc-ref inputs "gcc-lib"))
+                   (toolchain (assoc-ref inputs "gcc-toolchain-6"))
+                   (zlib (assoc-ref inputs "zlib"))
+                   (platform ,(system->rust-platform (%current-system)))
+                   (ld-so (string-append (assoc-ref inputs "libc")
+                                         ,(glibc-dynamic-linker))))
+               (system* "bash" "install.sh"
+                        (string-append "--prefix=" out)
+                        (string-append "--components=rustc,"
+                                       "rust-std-" platform))
+               (for-each
+                (lambda (file)
+                  (system* "patchelf"
+                           "--set-rpath"
+                           (string-append out "/lib:" zlib "/lib:"
+                                          gcc-lib "/lib:" toolchain "/lib")
+                           file))
+                (cons* (string-append out "/bin/rustc")
+                       (string-append out "/bin/rustdoc")
+                       (find-files out "\\.so$")))
+               (for-each
+                (lambda (file)
+                  (system* "patchelf"
+                           "--set-interpreter" ld-so
+                           file))
+                (list (string-append out "/bin/rustc")
+                      (string-append out "/bin/rustdoc")))
+               ;; Rust requires a gcc toolchain for linking. It
+               ;; looks for a compiler named cc in it's path. This
+               ;; can probably be configured during the build.
+               (symlink (string-append toolchain "/bin/gcc")
+                        (string-append out "/bin/cc"))))))))
+    (home-page "https://www.rust-lang.org")
+    (synopsis "Rustc bootstrap")
+    (description "This package prepares the rustc binary for bootstrapping
+the rustc package.")
+    (license license:asl2.0)))
-- 
2.9.0