wendelin.core: Add support for wendelin.core 2 build

The component remains on wendelin.core 1, but the build environment is
adjusted so that both (any of) wendelin.core 1 or wendelin.core 2 could
be built:

- Add zodbtools that wendelin.core 2 requires,
- Add Go and zlib to gowork that are neede to build WCFS.

component/wendelin.core/buildout.cfg

@@ -3,7 +3,10 @@
 [buildout]
 extends =
   ../pygolang/buildout.cfg
+  ../zodbtools/buildout.cfg
   ../numpy/buildout.cfg
+  ../golang/buildout.cfg
+  ../zlib/buildout.cfg
   ../git/buildout.cfg
 
 parts =
@@ -21,12 +24,18 @@ environment = wendelin.core-env
 
 # dependent eggs that must come through in-tree recipes
 depends =
+    ${zodbtools:egg}
     ${numpy:egg}
 
 
 [wendelin.core-env]
-# wendelin.core needs git(dev) to build
+# wendelin.core needs git(dev) and go to build
 PATH = ${git:location}/bin:%(PATH)s
+GO   = ${go:exe}
+
+# wcfs needs this:
+[gowork]
+cpkgpath += ${zlib:location}/lib/pkgconfig
 
 
 [wendelin.core-repository]

component/wendelin.core/test-common.cfg

@@ -32,11 +32,12 @@ eggs =
     neoppod[tests]
     ZEO[test]
 
-# env.sh for that python to be on $PATH
+# env.sh for that python + go to be on $PATH
 [wendelin.core-env.sh]
 recipe   = slapos.recipe.template:jinja2
 rendered = ${buildout:directory}/${:_buildout_section_name_}
 template = inline:
+  . ${gowork:env.sh}
   export PS1="(wendelin.core-env) $PS1"
   export PATH=${buildout:bin-directory}:${gdb:location}/bin:$PATH