gnu: Add julia-gumbo.

* gnu/packages/julia-xyz.scm (julia-gumbo-0.5.1): New variable.

gnu/packages/julia-xyz.scm

@@ -25,6 +25,7 @@
   #:use-module (gnu packages graphics)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages video)
+  #:use-module (gnu packages web)
   #:use-module (gnu packages xml)
   #:use-module (gnu packages tls))
 
@@ -2149,3 +2150,46 @@ that any package that contains such a datastructure may import and extend in
 order to take advantage of any generic tree algorithm in this package (or
 other packages compatible with this package).")
     (license license:expat)))
+
+(define-public julia-gumbo
+  (package
+    (name "julia-gumbo")
+    (version "0.5.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaWeb/Gumbo.jl")
+             (commit (string-append "v" version))))
+       (file-name "Gumbo")
+       (sha256
+        (base32 "1wsdrqz3jj684paanmpla9kvpdcv7sbsw2967kljykvb4plvsx95"))))
+    (propagated-inputs `(("julia-sha" ,julia-sha)
+                         ("julia-abstracttrees" ,julia-abstracttrees)
+                         ("julia-binaryprovider" ,julia-binaryprovider)
+                         ("julia-compat" ,julia-compat)
+                         ("gumbo-parser", gumbo-parser)))
+    (build-system julia-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'precompile 'build-deps
+           (lambda* (#:key outputs source inputs #:allow-other-keys)
+             (let ((f (open-file
+                       (string-append
+                        (assoc-ref outputs "out")
+                        "/share/julia/packages/"
+                        (string-append
+                         (strip-store-file-name source) "/deps/deps.jl"))
+                       "w")))
+               (display (string-append "const libgumbo = \""
+                                       (assoc-ref inputs "gumbo-parser")
+                                       "/lib/libgumbo.so\"\n") f)
+               (close-port f))
+             #t)))))
+    (home-page "https://github.com/JuliaWeb/Gumbo.jl")
+    (synopsis "Julia wrapper around Google's gumbo C library for parsing
+HTML")
+    (description "@code{Gumbo.jl} is a Julia wrapper around Google's gumbo
+library for parsing HTML.")
+    (license license:expat)))