flakelike

outputs.nix

@@ -0,0 +1,53 @@
+{ inputs ? import ./inputs.nix {}
+, selfPath ? builtins.toString ./.
+}:
+
+let
+
+lib = (import "${inputs.nixpkgs}/lib").extend (import ./lib/overlays/version-info-fixup.nix { inherit inputs; });
+
+self = {
+  inherit lib;
+  modifiedNixpkgs     = import ./pkgs/top-level/impure.nix;
+  modifiedNixpkgsPure = import ./pkgs/top-level/default.nix;
+  overlays = {
+    selfExpr = import ./pkgs/overlays/selfExpr.nix { nixpkgsPath = inputs.nixpkgs; };
+    unstable = import ./pkgs/overlays/unstable.nix;
+    versionInfoFixup = import ./pkgs/overlays/version-info-fixup.nix { inherit inputs; };
+  };
+  nixosConfigurations = let
+    dir = builtins.readDir ./hosts;
+    # list nix file paths in ./hosts to attributes in nixosConfigurations
+    filePaths = lib.mapAttrsToList (name: _: name) (lib.filterAttrs (name: type:
+        # filter out non-nix files
+            type == "regular"
+        # filter out files that don't end in .nix
+        && lib.hasSuffix ".nix" name
+        # filter out files that start with .
+        && ! lib.hasPrefix "." name
+      ) dir
+    );
+    nixosSystem = import "${inputs.nixpkgs}/nixos/lib/eval-config.nix";
+  in
+    # mapped list of nix file paths to attrSet with initialized NixOS configurations,
+    # whose names are derived from file names
+    builtins.listToAttrs (builtins.map (name: {
+      name = builtins.substring 0 (builtins.stringLength name - 4) name;
+      value = nixosSystem {
+        inherit lib;
+        modules = [
+          ./hosts/${name}
+          {
+            config.nixpkgs.overlays = [
+              ( import ./pkgs/overlays/selfExpr.nix { nixpkgsPath = ./pkgs/top-level/impure.nix; } )
+              self.overlays.versionInfoFixup
+            ];
+          }
+        ];
+        specialArgs = { inherit self inputs; };
+      };
+    }) filePaths
+  );
+};
+
+in self