chore(py-ray): add comments

I just looked up these things => next time we know it because of the comments.

packages/py-ray/package.py

@@ -20,7 +20,9 @@ class PyRay(PythonPackage):
 
     depends_on("python@3.6:3.10", when="@2.0.1", type=("build", "run"))
     depends_on("python@3.6:3.8", when="@0.8.7", type=("build", "run"))
+    # begin EBRAINS (modified): ECM relax constraint to allow newer bazel
     depends_on("bazel@4.2.2:5", when="@2.0.1", type="build")
+    # end EBRAINS (modified)
     depends_on("bazel@3.2.0", when="@0.8.7", type="build")
     depends_on("npm", type="build")
     depends_on("py-setuptools", type="build")
@@ -45,11 +47,12 @@ class PyRay(PythonPackage):
     depends_on("py-typing-extensions", when="@2.0.1 ^python@:3.7", type=("build", "run"))
     depends_on("py-virtualenv", when="@2.0.1", type=("build", "run"))
 
-    # needed to fix import errors
+    # begin EBRAINS (added): ElM needed to fix import errors
     depends_on("py-setproctitle", type=("build", "run"))
     depends_on("py-colorama", type=("build", "run"))
     depends_on("py-psutil", type=("build", "run"))
-    
+    # end EBRAINS
+
     with when("+default"):
         depends_on("py-aiohttp@3.7:", type=("build", "run"))
         depends_on("py-aiohttp-cors", type=("build", "run"))
@@ -100,4 +103,4 @@ class PyRay(PythonPackage):
         with working_dir(join_path("python", "ray", "dashboard", "client")):
             npm = which("npm")
             npm("ci")
-            npm("run", "build")
\ No newline at end of file
+            npm("run", "build")