diff --git a/README.md b/README.md
index b2741b0..8b157eb 100644
--- a/README.md
+++ b/README.md
@@ -23,11 +23,15 @@ Then I created [superior dotfiles](https://github.com/szymon-jozef/superior_dotf
 As of today I'm using this repo with home manager. I'm still trying stuff out, but it looks pretty good right now.
 
 # How to try this out?
-I guess you should [install home manager](https://nix-community.github.io/home-manager/index.xhtml#sec-install-standalone). You can do it on *any* distro! Then you just copy this repo to `~/.config/home-manager` and run
+I guess you should [install home manager](https://nix-community.github.io/home-manager/index.xhtml#sec-install-standalone). You can do it on *any* distro, but I only use Arch, so I don't guarantee it will work elsewhere. To try it out just copy this repo to `~/.config/home-manager`, cd there and then run:
+## On NixOS
 ```bash
-home-manager switch -b backup
+home-manager switch --flake .#nixos -b backup
+```
+## On Arch
+```bash
+home-manager switch --flake .#arch -b backup
 ```
-
 ---
 
 I hope you'll enjoy it, if you for whatever reason want to try this random ass dotfiles found on the internet…
diff --git a/flake.nix b/flake.nix
index 65eefd4..4672dd2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,17 +18,42 @@
       catppuccin,
       ...
     }:
+
+    let
+      user = "szymon";
+      # for git
+      email = "szymon_jozef@proton.me";
+      full_name = "Szymon P";
+    in
     {
+      homeConfigurations = {
+        "arch" = home-manager.lib.homeManagerConfiguration {
+          pkgs = import nixpkgs { system = "x86_64-linux"; };
+          extraSpecialArgs = {
+            isNixOS = false;
+            username = user;
+            email = email;
+            full_name = full_name;
+          };
+          modules = [
+            ./home.nix
+            catppuccin.homeModules.catppuccin
+          ];
 
-      homeConfigurations."szymon" = home-manager.lib.homeManagerConfiguration {
-        pkgs = import nixpkgs {
-          system = "x86_64-linux";
         };
-
-        modules = [
-          ./home.nix
-          catppuccin.homeModules.catppuccin
-        ];
+        "nixos" = home-manager.lib.homeManagerConfiguration {
+          pkgs = import nixpkgs { system = "x86_64-linux"; };
+          extraSpecialArgs = {
+            isNixOS = true;
+            username = user;
+            email = email;
+            full_name = full_name;
+          };
+          modules = [
+            ./home.nix
+            catppuccin.homeModules.catppuccin
+          ];
+        };
       };
     };
 }
diff --git a/home.nix b/home.nix
index 3075459..5c44840 100644
--- a/home.nix
+++ b/home.nix
@@ -1,10 +1,17 @@
-{ config, pkgs, ... }:
+{
+  pkgs,
+  isNixOS,
+  username,
+  ...
+}:
 
 {
   # Home Manager needs a bit of information about you and the paths it should
   # manage.
-  home.username = "szymon";
-  home.homeDirectory = "/home/szymon";
+  home.username = username;
+  home.homeDirectory = "/home/${username}";
+
+  home.file."test-os.txt".text = if isNixOS then "this is nixos" else "this is arch";
 
   nix = {
     package = pkgs.nix;
@@ -60,10 +67,6 @@
     VISUAL = "nvim";
   };
 
-  home.sessionPath = [
-    "/home/szymon/.lmstudio/bin"
-  ];
-
   # Let Home Manager install and manage itself.
   programs.home-manager.enable = true;
 }
diff --git a/modules/ashell.nix b/modules/ashell.nix
index f7841d3..c1a6ae8 100644
--- a/modules/ashell.nix
+++ b/modules/ashell.nix
@@ -1,9 +1,9 @@
-{ ... }:
+{ lib, isNixOS, ... }:
 
 {
   programs.ashell = {
     enable = true;
-    package = null;
+    package = lib.mkIf (!isNixOS) null;
     settings = {
       outputs = {
         Targets = [ "DP-1" ];
diff --git a/modules/atuin.nix b/modules/atuin.nix
index 9a2da15..1dd8652 100644
--- a/modules/atuin.nix
+++ b/modules/atuin.nix
@@ -1,4 +1,4 @@
-{ pgks, ... }:
+{ ... }:
 
 {
   programs.atuin = {
diff --git a/modules/fish.nix b/modules/fish.nix
index b31e425..837e20c 100644
--- a/modules/fish.nix
+++ b/modules/fish.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ isNixOS, ... }:
 
 {
   programs.fish = {
@@ -42,7 +42,9 @@
                   
                   set -l rel_file (realpath --relative-to=$config_dir $file)
                   
-                  if home-manager switch -b backup
+                  if home-manager switch --flake "$config_dir#${
+                    if isNixOS then "nixos" else "arch"
+                  }" -b backup
                       git add -A
                       set commit_msg "update: $rel_file"
                       git commit -m "$commit_msg"
diff --git a/modules/git.nix b/modules/git.nix
index e549d5f..2675194 100644
--- a/modules/git.nix
+++ b/modules/git.nix
@@ -1,4 +1,9 @@
-{ pkgs, ... }:
+{
+  pkgs,
+  full_name,
+  email,
+  ...
+}:
 
 {
   home.packages = with pkgs; [
@@ -9,8 +14,8 @@
     enable = true;
     settings = {
       user = {
-        name = "Szymon P";
-        email = "szymon_jozef@proton.me";
+        name = full_name;
+        email = email;
       };
       init.defaultBranch = "master";
       push.autoSetupRemote = true;
@@ -18,7 +23,7 @@
     };
 
     signing = {
-      key = "szymon_jozef@proton.me";
+      key = email;
       signByDefault = true;
     };
 
diff --git a/modules/kitty.nix b/modules/kitty.nix
index 57c13b1..a579f42 100644
--- a/modules/kitty.nix
+++ b/modules/kitty.nix
@@ -1,9 +1,9 @@
-{ lib, ... }:
+{ lib, isNixOS, ... }:
 
 {
-  programs.kitty = lib.mkForce {
+  programs.kitty = {
     enable = true;
-    package = null;
+    package = lib.mkIf (!isNixOS) null;
     settings = {
       confirm_os_window_close = 0;
       dynamic_background_opacity = true;
diff --git a/modules/satty.nix b/modules/satty.nix
index efa9718..55fc9aa 100644
--- a/modules/satty.nix
+++ b/modules/satty.nix
@@ -1,15 +1,20 @@
-{ ... }:
+{
+  lib,
+  isNixOS,
+  username,
+  ...
+}:
 
 {
   programs.satty = {
     enable = true;
-    package = null;
+    package = lib.mkIf (!isNixOS) null;
     settings = {
       general = {
         fullscreen = true;
         early-exit = true;
         initial-tool = "crop";
-        output-filename = "/home/szymon/Obrazy/zrzuty/%d-%m-%Y_%H:%M:%S.png";
+        output-filename = "/home/${username}/Obrazy/zrzuty/%d-%m-%Y_%H:%M:%S.png";
         save-after-copy = true;
         disable-notifications = false;
         actions-on-escape = [ "exit" ];
diff --git a/modules/ssh.nix b/modules/ssh.nix
index af2cdda..5a8e017 100644
--- a/modules/ssh.nix
+++ b/modules/ssh.nix
@@ -1,4 +1,4 @@
-{ args, ... }:
+{ username, ... }:
 
 {
   services.ssh-agent.enable = true;
@@ -10,13 +10,13 @@
     matchBlocks = {
       "dmowski" = {
         hostname = "192.168.0.30";
-        user = "szymon";
+        user = username;
         port = 22;
         identityFile = "~/.ssh/dmowski";
       };
 
       "aur.archlinux.org" = {
-        user = "szymon";
+        user = username;
         identityFile = "~/.ssh/aur";
       };
 
diff --git a/modules/yazi.nix b/modules/yazi.nix
index f5edc51..82d46e9 100644
--- a/modules/yazi.nix
+++ b/modules/yazi.nix
@@ -1,4 +1,4 @@
-{ pgks, ... }:
+{ ... }:
 
 {
   programs.yazi = {