F:wqirst version of README.md

README.md

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+# NixOS Configuration Files wit Flakes, Home-Manager
+## Description
+My NixOS configuration repository
+
+## Install a new host 
+1. Install NixOS with graphical ISO image (e.g. GNOME). During the installation the desktop environment can be choosen.
+2. Reboot into NixOS
+3. Edit `/etc/nixos/configuration.nix` with sudoedit
+  a) Change hostname
+  b) Enable flakes. Add the following lines:
+```
+# Enable flakes
+ nix.settings.experimental-features = [ "nix-command" "flakes" ];
+```
+  c) Install tmux, neovim, git by adding them to `environment.systemPackages = with pkgs; [`
+4. Apply changes: `sudo nixos-rebuild switch` and reboot
+5. Clone NixOS config repository to /home/$USER/nixos:
+```
+cd
+git clone https://git.plueschbit.de/jan/nixos-conf ~/nixos
+```
+6. Add the new host to repository
+  a) Create ~/nixos/hosts/$HOSTNAME
+  b) `cp /etc/nixos/*.nix $HOSTNAME/.`
+  c) Edit `~/nixos/flake.nix` and add section for new host
+  d) Stage new config files: `git add flake.nix hosts/$HOSTNAME/*`. Otherwise, nixos-rebuild will refuse to work with the files.
+7. Apply config: `sudo nixos-rebuild ~/nixos/$HOSTNAME`
+