From 70d8ffaa2cd25d0f0b65cf64daf2cc4ffc2b5d12 Mon Sep 17 00:00:00 2001
From: Ben Woodcroft <donttrustben@gmail.com>
Date: Mon, 5 Feb 2018 11:48:52 +0100
Subject: gnu: Add ruby-libv8.

---
 gnu/packages/ruby.scm | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/gnu/packages/ruby.scm b/gnu/packages/ruby.scm
index 91b47dfa27..df519978f3 100644
--- a/gnu/packages/ruby.scm
+++ b/gnu/packages/ruby.scm
@@ -3987,6 +3987,71 @@ a native C extension.")
     (home-page "https://rubygems.org/gems/rb-fsevent")
     (license license:expat)))
 
+(define-public ruby-libv8
+  (package
+    (name "ruby-libv8")
+    (version "6.7.288.46.0") ; Package an even-numbered release so only source
+                           ; code it included and not binaries.
+    (source
+     (origin
+       (method url-fetch)
+       (uri (rubygems-uri "libv8" version))
+       (sha256
+        (base32
+         "1f1gd8n8yrnd2d2bmlbcm1qgfpw050087y8gq4z72cj8mal60k3f"))))
+    (build-system ruby-build-system)
+    (arguments
+     `(#:test-target "spec"
+       ;#:gem-flags (list "--" "--with-system-v8")
+       #:phases
+       (modify-phases %standard-phases
+         ;; Non-printing characters trip up this build phase and it isn't used
+         ;; anyway.
+                                        ;(delete 'extract-gemspec)
+         ;; (replace 'replace-git-ls-files
+         ;;          (lambda _
+         ;;            (substitute* "libv8.gemspec"
+         ;;              (("git ls-files") "find . -type f |sort"))
+         ;;            #t))
+         (add-after 'extract-gemspec 'fix-dependencies
+                    (lambda _
+                      ;; Remove non-printing character that trips up substitute*
+                      (system* "sed" "s/ stub.*//" "-i" "libv8.gemspec")
+                      ;;(delete-file-recursively "vendor")
+                      (substitute* "libv8.gemspec"
+                        ;; (("<rake>.*") "<rake>)\n")
+                        (("<rake-compiler>.*") "<rake-compiler>)\n")
+                        ((", \\\"vendor.*") "]\n")
+                        ) ; Do not distribute
+                                        ; depot_tools as this includes pre-built
+                                        ; binaries.
+
+             #t))
+         )))
+         ;; (Add-after 'install 'remove-extraneous-files
+         ;;   (lambda* (#:key outputs #:allow-other-keys)
+         ;;     (delete-file-recursively
+         ;;      (string-append
+         ;;       (assoc-ref outputs "out")
+         ;;       ;; TODO: Generalise this path.
+         ;;       "/lib/ruby/gems/2.3.0/gems/libv8-5.2.361.43.1/vendor")))))))
+    (native-inputs
+     `(("bundler" ,bundler)
+       ("ruby-rake" ,ruby-rake)
+       ("ruby-rake-compiler" ,ruby-rake-compiler)
+       ("ruby-rspec" ,ruby-rspec)
+       ("ruby-rspec-spies" ,ruby-rspec-spies)
+       ("which" ,which)
+       ("python" ,python-2)))
+    (synopsis
+     "Distributes the V8 JavaScript engine in binary and source forms in order
+to support fast builds of The Ruby Racer")
+    (description
+     "Distributes the V8 JavaScript engine in binary and source forms in order
+to support fast builds of The Ruby Racer")
+    (home-page "http://github.com/cowboyd/libv8")
+    (license license:expat)))
+
 (define-public ruby-listen
   (package
     (name "ruby-listen")
-- 
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