Prioritises current nimble (#1358)

* Prioritises current nimble

* Adjusts test to change

Author: jmgomez

src/nimble.nim

@@ -2326,7 +2326,7 @@ proc getAlteredPath(options: Options): string =
       paths.add folder
   paths.reverse
   let parentDir = options.nimBin.get.path.parentDir
-  result = fmt "{paths.join(separator)}{separator}{parentDir}{separator}{getEnv(\"PATH\")}"
+  result = fmt "{getAppDir()}{separator}{paths.join(separator)}{separator}{parentDir}{separator}{getEnv(\"PATH\")}"
 
 proc shellenv(options: var Options) =
   setVerbosity(SilentPriority)

tests/tshellenv.nim

@@ -32,5 +32,5 @@ suite "Shell env":
         check prefix == "export PATH"
 
 
-      check dirs[0].extractFileName == "shellenv"
-      check dirs[1].extractFileName == "testutils-0.5.0-756d0757c4dd06a068f9d38c7f238576ba5ee897"
+      check dirs[1].extractFileName == "shellenv"
+      check dirs[2].extractFileName == "testutils-0.5.0-756d0757c4dd06a068f9d38c7f238576ba5ee897"