build: Add node-build-system.

* guix/build/node-build-system.scm: New file.
* guix/build-system/node.scm: New file.
* guix/build/json.scm: New file.
* doc/guix.texi: Document it.
* Makefile.am: Added new files.

Co-Authored-By: Julien Lepiller <julien@lepiller.eu>

1 files changed, 135 insertions, 0 deletions

diff --git a/guix/build-system/node.scm b/guix/build-system/node.scm
new file mode 100644
index 0000000000..05c24c47d5
--- /dev/null
+++ b/guix/build-system/node.scm
@@ -0,0 +1,135 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Jelle Licht <jlicht@fsfe.org>
+;;;
+;;; 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 (guix build-system node)
+  #:use-module (guix store)
+  #:use-module (guix build json)
+  #:use-module (guix build union)
+  #:use-module (guix utils)
+  #:use-module (guix packages)
+  #:use-module (guix derivations)
+  #:use-module (guix search-paths)
+  #:use-module (guix build-system)
+  #:use-module (guix build-system gnu)
+  #:use-module (ice-9 match)
+  #:export (npm-meta-uri
+            %node-build-system-modules
+            node-build
+            node-build-system))
+
+(define (npm-meta-uri name)
+  "Return a URI string for the metadata of node module NAME found in the npm
+registry."
+  (string-append "https://registry.npmjs.org/" name))
+
+(define %node-build-system-modules
+  ;; Build-side modules imported by default.
+  `((guix build node-build-system)
+    (guix build json)
+    (guix build union)
+    ,@%gnu-build-system-modules)) ;; TODO: Might be not needed
+
+(define (default-node)
+  "Return the default Node package."
+  ;; Lazily resolve the binding to avoid a circular dependency.
+  (let ((node (resolve-interface '(gnu packages node))))
+    (module-ref node 'node)))
+
+(define* (lower name
+                #:key source inputs native-inputs outputs system target
+                (node (default-node))
+                #:allow-other-keys
+                #:rest arguments)
+  "Return a bag for NAME."
+  (define private-keywords
+    '(#:source #:target #:node #:inputs #:native-inputs))
+
+  (and (not target)                    ;XXX: no cross-compilation
+       (bag
+         (name name)
+         (system system)
+         (host-inputs `(,@(if source
+                              `(("source" ,source))
+                              '())
+                        ,@inputs
+
+                        ;; Keep the standard inputs of 'gnu-build-system'.
+                        ,@(standard-packages)))
+         (build-inputs `(("node" ,node)
+                         ,@native-inputs))
+         (outputs outputs)
+         (build node-build)
+         (arguments (strip-keyword-arguments private-keywords arguments)))))
+
+(define* (node-build store name inputs
+                     #:key
+                     (npm-flags ''())
+                     (tests? #t)
+                     (phases '(@ (guix build node-build-system)
+                                 %standard-phases))
+                     (outputs '("out"))
+                     (search-paths '())
+                     (system (%current-system))
+                     (guile #f)
+                     (imported-modules %node-build-system-modules)
+                     (modules '((guix build node-build-system)
+				(guix build json)
+				(guix build union)
+                                (guix build utils))))
+  "Build SOURCE using NODE and INPUTS."
+  (define builder
+    `(begin
+       (use-modules ,@modules)
+       (node-build #:name ,name
+                   #:source ,(match (assoc-ref inputs "source")
+                               (((? derivation? source))
+                                (derivation->output-path source))
+                               ((source)
+                                source)
+                               (source
+                                source))
+                   #:system ,system
+                   #:npm-flags ,npm-flags
+                   #:tests? ,tests?
+                   #:phases ,phases
+                   #:outputs %outputs
+                   #:search-paths ',(map search-path-specification->sexp
+                                         search-paths)
+                   #:inputs %build-inputs)))
+
+  (define guile-for-build
+    (match guile
+      ((? package?)
+       (package-derivation store guile system #:graft? #f))
+      (#f
+       (let* ((distro (resolve-interface '(gnu packages commencement)))
+              (guile  (module-ref distro 'guile-final)))
+         (package-derivation store guile system #:graft? #f)))))
+
+  (build-expression->derivation store name builder
+                                #:inputs inputs
+                                #:system system
+                                #:modules imported-modules
+                                #:outputs outputs
+                                #:guile-for-build guile-for-build))
+
+(define node-build-system
+  (build-system
+    (name 'node)
+    (description "The standard Node build system")
+    (lower lower)))