move nixpkgs applications to a seperate repository

doc/nixpkgs-committers.md

@@ -1,11 +1,15 @@
 # Nixpkgs committers
 
 There are over 200 Nixpkgs committers with access to merge any PR.
-To become a Nixpkgs committer, you can apply [in this issue](https://github.com/NixOS/nixpkgs/issues/321665).
+
+To become a Nixpkgs committer, you can apply by creating an issue [here](https://github.com/Mic92/nixpkgs-committers/issues/new/choose). (TODO: move this repository)
+Committers should have their GitHub name/ID in the [maintainer-list](https://github.com/NixOS/nixpkgs/blob/master/maintainers/maintainer-list.nix).
+This allows us to keep track of committers even if usernames are changed or accounts are deleted.
 
 The [Nixpkgs committer admins](./github.md#nixpkgs) is given the responsibility and authority of changing the list of [Nixpkgs committers](https://github.com/orgs/NixOS/teams/nixpkgs-committers).
 
-## Process
+## Rules for changing the process for managing nixpkgs committer access
+
 - The process must be publicly documented (this document)
 - Any change to the process must be unanimously agreed upon by all Nixpkgs committer admins.
 - Any change in the list of committers must be publicly documented and agreed upon by all Nixpkgs committer admins.