pygolang: Always use git checkout for both release and development version

Similarly to wendelin.core (see ad34ff4a "wendelin.core: Always use git
checkout for both release and development version") let's switch pygolang to
install via git checkout for both release and tests.

This way we avoid dependency on pypi and will be able to do minor updates
without doing bigger to-pypi releases. Always using git checkout also helps
security a bit because we remove reliance on trust to tarball received from pypi.

/cc @jerome, @kazuhiko

component/pygolang/buildout-dev.cfg

-# SlapOS component for pygolang development.
-
-[buildout]
-extends =
-    buildout.cfg
-    ../git/buildout.cfg
-
-# override pygolang to install it from latest git version
-[pygolang]
-recipe  = zc.recipe.egg:develop
-setup   = ${pygolang-repository:location}
-
-[pygolang-repository]
-recipe  = slapos.recipe.build:gitclone
-repository = https://lab.nexedi.com/nexedi/pygolang.git
-branch  = master
-location = ${buildout:parts-directory}/pygolang-dev
-git-executable = ${git:location}/bin/git
-
-
-# unpin pygolang from versions, so that buildout does not fallback to
-# installing non-dev egg if dev one has changed its version.
-[versions]
-pygolang =

component/pygolang/buildout.cfg

@@ -4,15 +4,17 @@
 [buildout]
 extends =
     ../../component/cython/buildout.cfg
+    ../git/buildout.cfg
 
 parts =
     pygolang
     gpython
 
 
-# pygolang installed from released egg from pypi
+# pygolang is installed from git checkout
 [pygolang]
-recipe  = zc.recipe.egg:custom
+recipe  = zc.recipe.egg:develop
+setup   = ${pygolang-repository:location}
 egg     = pygolang
 setup-eggs =
     ${cython:egg}
@@ -27,6 +29,15 @@ scripts = gpython
 # convenience for gpython users
 exe     = ${buildout:bin-directory}/gpython
 
+[pygolang-repository]
+recipe  = slapos.recipe.build:gitclone
+repository = https://lab.nexedi.com/nexedi/pygolang.git
+branch   = master
+revision = pygolang-0.1-0-g7b72d418
+location = ${buildout:parts-directory}/pygolang
+git-executable = ${git:location}/bin/git
+
+
 # python-interpreter provides python interpreter with all specified eggs.
 # eggs default to pygolang, but can be overwritten or changed in inherited section.
 # if eggs are changes, they must still have pygolang.
@@ -106,7 +117,3 @@ init =
   eggs += %(eggs)s
   interpreter = $${:_buildout_section_name_}
   """ % locals())
-
-
-[versions]
-pygolang = 0.1

component/pygolang/test.cfg

@@ -5,7 +5,7 @@ extends =
     ../../stack/nxdtest.cfg
     ../pytest/buildout.cfg
     ../numpy/buildout.cfg
-    buildout-dev.cfg
+    buildout.cfg
 
 parts =
     pygolang