flake: home-manager: convert to 'flake-parts'

flake/default.nix

@@ -9,7 +9,7 @@
 let
   inherit (self) lib;
 
-  inherit (futils.lib) eachSystem system;
+  inherit (futils.lib) system;
 
   mySystems = [
     system.aarch64-darwin
@@ -17,47 +17,6 @@ let
     system.x86_64-darwin
     system.x86_64-linux
   ];
-
-  eachMySystem = eachSystem mySystems;
-
-  systemDependant = system: {
-    # Work-around for https://github.com/nix-community/home-manager/issues/3075
-    legacyPackages = {
-      homeConfigurations = {
-        ambroisie = home-manager.lib.homeManagerConfiguration {
-          # Work-around for home-manager
-          # * not letting me set `lib` as an extraSpecialArgs
-          # * not respecting `nixpkgs.overlays` [1]
-          # [1]: https://github.com/nix-community/home-manager/issues/2954
-          pkgs = import nixpkgs {
-            inherit system;
-
-            overlays = (lib.attrValues self.overlays) ++ [
-              nur.overlay
-            ];
-          };
-
-          modules = [
-            "${self}/home"
-            {
-              # The basics
-              home.username = "ambroisie";
-              home.homeDirectory = "/home/ambroisie";
-              # Let Home Manager install and manage itself.
-              programs.home-manager.enable = true;
-              # This is a generic linux install
-              targets.genericLinux.enable = true;
-            }
-          ];
-
-          extraSpecialArgs = {
-            # Inject inputs to use them in global registry
-            inherit inputs;
-          };
-        };
-      };
-    };
-  };
 in
 flake-parts.lib.mkFlake { inherit inputs; } {
   systems = mySystems;
@@ -66,11 +25,10 @@ flake-parts.lib.mkFlake { inherit inputs; } {
     ./apps.nix
     ./checks.nix
     ./dev-shells.nix
+    ./home-manager.nix
     ./lib.nix
     ./nixos.nix
     ./overlays.nix
     ./packages.nix
   ];
-
-  flake = (eachMySystem systemDependant);
 }

flake/home-manager.nix

@@ -0,0 +1,41 @@
+{ self, inputs, ... }:
+{
+  perSystem = { system, ... }: {
+    # Work-around for https://github.com/nix-community/home-manager/issues/3075
+    legacyPackages = {
+      homeConfigurations = {
+        ambroisie = inputs.home-manager.lib.homeManagerConfiguration {
+          # Work-around for home-manager
+          # * not letting me set `lib` as an extraSpecialArgs
+          # * not respecting `nixpkgs.overlays` [1]
+          # [1]: https://github.com/nix-community/home-manager/issues/2954
+          pkgs = import inputs.nixpkgs {
+            inherit system;
+
+            overlays = (lib.attrValues self.overlays) ++ [
+              inputs.nur.overlay
+            ];
+          };
+
+          modules = [
+            "${self}/home"
+            {
+              # The basics
+              home.username = "ambroisie";
+              home.homeDirectory = "/home/ambroisie";
+              # Let Home Manager install and manage itself.
+              programs.home-manager.enable = true;
+              # This is a generic linux install
+              targets.genericLinux.enable = true;
+            }
+          ];
+
+          extraSpecialArgs = {
+            # Inject inputs to use them in global registry
+            inherit inputs;
+          };
+        };
+      };
+    };
+  };
+}