fixed bug in build-pacman-repo

tasks.py

@@ -20,7 +20,7 @@ def update(c):
 @task
 def addyaml(c, directory):
     f = "./build-pacman-repo.yaml"
-    with open(f, "r+") as stream:
+    with open(f, "r") as stream:
         data = yaml.safe_load(stream)
         exists = [x["directory"] == directory for x in data["members"]]
         exists = any(exists)
@@ -28,4 +28,5 @@ def addyaml(c, directory):
         print(data)
         if not exists:
             data["members"].append({"directory":directory})
-        yaml.safe_dump(data, stream)
+            with open(f, "w") as stream2:
+                yaml.safe_dump(data, stream2)