Fix #633 - pass CLI to tasks (#686)

* Fix #633 - pass CLI to tasks

* Add test case

tests/issue633/issue633.nimble

@@ -0,0 +1,16 @@
+# Package
+
+version     = "0.1.0"
+author      = "GT"
+description = "Package for ensuring that issue #633 is resolved."
+license     = "MIT"
+
+# Dependencies
+
+requires "nim >= 0.19.6"
+# to reproduce dependency 2 must be before 1
+
+task testTask, "Test":
+  for i in 0 .. paramCount():
+    if paramStr(i) == "--testTask":
+      echo "Got it"

tests/tester.nim

@@ -864,3 +864,8 @@ test "do not install single dependency multiple times (#678)":
       let (output, exitCode) = execNimble("install", "-y")
       check exitCode == QuitSuccess
       check output.find("issue678_dependency_1@0.1.0 already exists") == -1
+
+test "Passing command line arguments to a task (#633)":
+  cd "issue633":
+    var (output, exitCode) = execNimble("testTask --testTask")
+    check output.contains("Got it")