component/scikit-learn: Add sections to install scikit-learn from git repos

component/scikit-learn/buildout.cfg

 [buildout]
 extends =
-  ../numpy/buildout.cfg
+  ../cython/buildout.cfg
+  ../numpy/openblas.cfg
   ../scipy/buildout.cfg
 
 parts =
@@ -20,3 +21,25 @@ rpath =
   ${gcc:location}/lib
   ${gcc:location}/lib64
   ${openblas:location}/lib
+
+[scikit-learn-repository]
+recipe  = slapos.recipe.build:gitclone
+git-executable = ${git:location}/bin/git
+repository = https://github.com/scikit-learn/scikit-learn.git
+location = ${buildout:parts-directory}/scikit-learn
+
+[scikit-learn-develop]
+# This only work if we use zc.recipe.egg from zc.buildout 2 patched
+# by nexedi (zc.recipe.egg = 2.0.3+slapos001 and zc.buildout = 2.5.2+slapos003)
+recipe = zc.recipe.egg:develop
+egg = scikit-learn
+setup = ${scikit-learn-repository:location}
+environment = scikit-learn-env
+setup-eggs =
+  ${cython:egg}
+  ${numpy:egg}
+  ${scipy:egg}
+rpath =
+  ${gcc-fortran:location}/lib
+  ${gcc-fortran:location}/lib64
+  ${openblas:location}/lib