golang: v↑ (1.8)

1.8.X is current stable series of Go.

https://golang.org/doc/go1.8
https://golang.org/doc/devel/release.html#go1.8

Besides many other significant improvements it should now also support ARM64.

/cc @jp
/reviewed-by TrustMe  (tested on helloworld)

component/golang/buildout.cfg

@@ -3,7 +3,7 @@
 parts = golang
 
 [golang]
-<= golang16
+<= golang18
 
 
 [golang-common]
@@ -42,3 +42,12 @@ md5sum = bf3fce6ccaadd310159c9e874220e2a2
 # go1.6 needs go1.4 to bootstrap
 environment-extra =
   GOROOT_BOOTSTRAP=${golang14:location}
+
+[golang18]
+<= golang-common
+url = https://storage.googleapis.com/golang/go1.8.src.tar.gz
+md5sum = 7743960c968760437b6e39093cfe6f67
+
+# go1.8 needs go1.4 to bootstrap
+environment-extra =
+  GOROOT_BOOTSTRAP=${golang14:location}

component/helloweb/buildout.cfg

@@ -89,7 +89,7 @@ input   = inline:
 recipe  = slapos.recipe.cmmi
 path    = ${helloweb-repository:location}/go/
 
-go      = ${golang16:location}/bin/go
+go      = ${golang18:location}/bin/go
 configure-command = :
 make-binary =
 make-targets= cd ${:path} &&