Commit initial flake config

flake.nix

@@ -0,0 +1,78 @@
+# The curly braces denote a set of keys and values.
+{
+  description = "ChUrl's very bad and basic Nix config using Flakes";
+
+  # This config is a Flake.
+  # It needs inputs that are passed as arguments to the output.
+  # These are the dependencies of the Flake.
+  # The git revisions get locked in flake.lock to make the outputs deterministic.
+  inputs = {
+    # Nixpkgs
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    hardware.url = "github:nixos/nixos-hardware";
+
+    # Home manager
+    home-manager.url = "github:nix-community/home-manager";
+    home-manager.inputs.nixpkgs.follows = "nixpkgs";
+
+    # Other Flakes
+    emacs-overlay.url  = "github:nix-community/emacs-overlay";
+  };
+
+  # Outputs is a function that takes the inputs as arguments.
+  # To handle extra arguments we use the inputs@ pattern.
+  # It gives a name to the ... ellipses.
+  outputs = inputs @ { nixpkgs, home-manager, ... }:
+  # With let you can define local variables
+  let
+    # We bring these functions into the scope for the outputs.
+    inherit (nixpkgs.lib) nixosSystem;
+    inherit (home-manager.lib) homeManagerConfiguration;
+  in
+  # The rec expression turns a basic set into a set where self-referencing is possible.
+  # It is a shorthand for recursive and allows to use the values defined in this set from its own scope.
+  rec {
+    # System configurations
+    # Accessible via 'nixos-rebuild'
+    nixosConfigurations = {
+      # We give our configuration a name (the hostname) to choose a configuration when rebuilding.
+      # This makes it easy to add different configurations later (e.g. for a laptop).
+      # Usage: sudo nixos-rebuild switch --flake .#nixinator
+      nixinator = nixosSystem {
+        system = "x86_64-linux";
+
+        # >> Main NixOS configuration file <<
+        modules = [ ./configuration.nix ];
+
+        # Make our inputs available to the config (for importing modules)
+        specialArgs = { inherit inputs; };
+      };
+    };
+
+    # Home configurations
+    # Accessible via 'home-manager'
+    homeConfigurations = {
+      # We give our configuration a name (the user + hostname).
+      # This makes it easy to add configurations for different users/PCs.
+      # Usage: home-manager switch --flake .#christoph@nixinator
+      "christoph@nixinator" = homeManagerConfiguration rec {
+        pkgs = nixpkgs.legacyPackages."x86_64-linux"; # HomeManager needs this since 22.11 release
+
+        modules = [
+	  # >> Main HomeManager configuration file <<
+          ./home.nix
+          {
+            home = rec {
+              username = "christoph";
+              homeDirectory = "/home/${username}";
+              stateVersion = "22.05";
+            };
+          }
+        ];
+
+        # Make our inputs available to the config (for importing modules)
+        extraSpecialArgs = { inherit inputs; };
+      };
+    };
+  };
+}