create people module

README.md

@@ -19,14 +19,14 @@ nix run
   - Clone this repo at `/etc/nixos`
   - Edit `flake.nix` and 
     - add your Linux's hostname in the `nixosConfigurations` set, as well as
-    - update `myUserName`.
+    - update `people.myself` to your desired username.
   - Run `nix run`. That's it. Re-open your shell.
 - macOS: 
     - Install Nix normally (multi-user)
     - Install [nix-darwin](https://github.com/LnL7/nix-darwin) 
         - This will create a `~/.nixpkgs/darwin-configuration.nix`, but we do not need that. 
     - Clone this repo anywhere
-    - Edit `flake.nix` to update `myUserName`.
+    - Edit `flake.nix` to update `people.myself` to your desired username.
     - Run `nix run`.[^cleanup] That's it. Re-open your shell.
 
 [^cleanup]: You might have to `rm -rf /etc/nix/nix.conf`, so our flake.nix can do its thing.

config.nix

@@ -1,9 +1,33 @@
 { config, lib, ... }:
+let
+  userSubmodule = lib.types.submodule {
+    options = {
+      name = lib.mkOption {
+        type = lib.types.str;
+      };
+      email = lib.mkOption {
+        type = lib.types.str;
+      };
+    };
+  };
+  peopleSubmodule = lib.types.submodule {
+    options = {
+      users = lib.mkOption {
+        type = lib.types.attrsOf userSubmodule;
+      };
+      myself = lib.mkOption {
+        type = lib.types.str;
+        description = ''
+          The name of the user that represents myself.
+        '';
+      };
+    };
+  };
+in
 {
   options = {
-    myUserName = lib.mkOption {
-      type = lib.types.str;
-      description = "The canonical (only) user to add to all systems.";
+    people = lib.mkOption {
+      type = peopleSubmodule;
     };
   };
 }

flake.nix

@@ -40,7 +40,19 @@
         ./activate.nix
       ];
 
-      myUserName = "srid";
+      people = {
+        myself = "srid";
+        users = {
+          srid = {
+            name = "Sridhar Ratnakumar";
+            email = "srid@srid.ca";
+          };
+          uday = {
+            name = "Uday Kiran";
+            email = "udaycruise2903@gmail.com";
+          };
+        };
+      };
       flake = {
         # Configurations for Linux (NixOS) systems
         nixosConfigurations = {
@@ -49,8 +61,8 @@
             [
               ./systems/hetzner/ax41.nix
               ./nixos/server/harden.nix
-              # Temporarily sharing with Uday.
-              (import ./uday.nix { inherit self; })
+              # I share my Hetzner server with other people who need it.
+              self.nixosModules.other-people
             ];
         };
         # Configurations for my only[^1] macOS machine (using nix-darwin)

home/git.nix

@@ -1,12 +1,13 @@
-{ userName, userEmail }:
-{ pkgs, ... }:
+{ user }:
+{ pkgs, config, ... }:
 {
   home.packages = [ pkgs.git-lfs ];
 
   programs.git = {
     package = pkgs.gitAndTools.gitFull;
     enable = true;
-    inherit userName userEmail;
+    userName = user.name;
+    userEmail = user.email;
     aliases = {
       co = "checkout";
       ci = "commit";

nix-darwin/default.nix

@@ -30,13 +30,12 @@
         self.darwinModules.default
         ../systems/darwin.nix
         {
-          home-manager.users.${config.myUserName} = { pkgs, ... }: {
+          home-manager.users.${config.people.myself} = { pkgs, ... }: {
             imports = [
               self.homeModules.common-darwin
               ../home/shellcommon.nix
               (import ../home/git.nix {
-                userName = "Sridhar Ratnakumar";
-                userEmail = "srid@srid.ca";
+                user = config.people.users.${config.people.myself};
               })
             ];
           };

nixos/default.nix

@@ -18,6 +18,20 @@
           };
         })
       ];
+      other-people.imports = [
+        # Temporarily sharing with Uday.
+        {
+          users.users.uday.isNormalUser = true;
+          home-manager.users."uday" = {
+            imports = [
+              self.homeModules.common-linux
+              (import ../home/git.nix {
+                user = config.people.users.uday;
+              })
+            ];
+          };
+        }
+      ];
       default.imports =
         self.nixosModules.common.imports ++
         self.nixosModules.home.imports ++
@@ -35,13 +49,12 @@
       modules = [
         self.nixosModules.default
         {
-          home-manager.users.${config.myUserName} = { pkgs, ... }: {
+          home-manager.users.${config.people.myself} = { pkgs, ... }: {
             imports = [
               self.homeModules.common-linux
               ../home/shellcommon.nix
               (import ../home/git.nix {
-                userName = "Sridhar Ratnakumar";
-                userEmail = "srid@srid.ca";
+                user = config.people.users.${config.people.myself};
               })
             ];
           };

uday.nix

@@ -1,13 +0,0 @@
-{ self }:
-{
-  users.users.uday.isNormalUser = true;
-  home-manager.users."uday" = {
-    imports = [
-      self.homeModules.common-linux
-      (import ./home/git.nix {
-        userName = "Uday Kiran";
-        userEmail = "udaycruise2903@gmail.com";
-      })
-    ];
-  };
-}