Make circle ci work with nimble

circle.yml

@@ -5,18 +5,29 @@ dependencies:
           git clone -b devel --depth 1 git://github.com/araq/nim ~/nim/
           git clone -b devel --depth 1 git://github.com/nim-lang/csources ~/nim/csources/
           cd ~/nim/csources; sh build.sh; cd ..; rm -rf csources
-          bin/nim c koch; ./koch boot -d:release
           ln -fs ~/nim/bin/nim ~/bin/nim
+          bin/nim c koch; ./koch boot -d:release
         else
           cd ~/nim; git fetch origin
           git merge FETCH_HEAD | grep "Already up-to-date" || (bin/nim c koch; ./koch boot -d:release)
         fi
+        if [ ! -x ~/nimble ]; then
+          git clone --depth 1 https://github.com/nim-lang/nimble ~/nimble/
+          cd ~/nimble
+          nim -d:release c -r src/nimble -y install
+          ln -fs ~/.nimble/bin/nimble ~/bin/nimble
+        else
+          cd ~/nimble; git fetch origin
+          git merge FETCH_HEAD | grep "Already up-to-date" || (nim -d:release c -r src/nimble -y install)
+        fi
 
   cache_directories:
     - "~/bin/"
     - "~/nim/"
+    - "~/nimble/"
+    - "~/.nimble/"
 
 ## Customize test commands
 test:
   override:
-    - nim c -r tests/all
+    - nimble tests