Test for nose achievement plugin before using it.

Makefile

@@ -7,6 +7,11 @@ NUMCPUS := $(shell grep -c '^process' /proc/cpuinfo)
 TESTS ?= tests/
 # set test options, eg. to "--nologcapture"
 TESTOPTS=
+# test for nose achievements plugin and use it if available
+NOSE_ACHIEVEMENTS:=$(shell nosetests --plugins | grep achievements)
+ifeq ($(strip $(NOSE_ACHIEVEMENTS)),Plugin achievements)
+TESTOPTS += --with-achievements
+endif
 
 all:
 

setup.cfg

@@ -1,2 +0,0 @@
-[nosetests]
-;with-achievements=1