component/nxdtest: Prepare for nexedi/nxdtest!13 (II)

4) Hook in python-prctl, as it becomes nxdtest dependency: see
   nexedi/nxdtest!13 (79d13eff)

/reviewed-by @jerome
/reviewed-on nexedi/slapos!1095

component/nxdtest/buildout.cfg

@@ -2,6 +2,7 @@
 extends =
   ../pygolang/buildout.cfg
   ../util-linux/buildout.cfg
+  ../python-prctl/buildout.cfg
   ../git/buildout.cfg
 
 
@@ -42,6 +43,7 @@ exe     = ${buildout:bin-directory}/${:interpreter}
 recipe  = zc.recipe.egg:develop
 setup   = ${nxdtest-repository:location}
 egg     = nxdtest
+depends = ${python-prctl:egg}
 
 [nxdtest-repository]
 recipe  = slapos.recipe.build:gitclone

component/python-prctl/buildout.cfg

+[buildout]
+extends =
+  ../libcap/buildout.cfg
+
+[python-prctl]
+recipe = zc.recipe.egg:custom
+egg = python-prctl
+include-dirs =
+  ${libcap:location}/include
+library-dirs =
+  ${libcap:location}/lib
+rpath =
+  ${:library-dirs}
+
+# setup.py also calls cpp directly to verify for sys/capabilities.h
+environment = python-prctl-env
+[python-prctl-env]
+C_INCLUDE_PATH=${libcap:location}/include
+
+
+[versions]
+python-prctl = 1.8.1