README.md

@@ -1,22 +1,10 @@
 # maintainers
 
-This flake provides two [Nix bundlers](https://github.com/NixOS/bundlers) that compile information about the maintainership of packages.
+This flake provides two bundlers that compile information about the maintainership of packages.
 
-Usage:
+## #unmaintained (#default)
 
-```
-nix bundle --bundler github:Jaculabilis/maintainers [installable]
-```
-
-where `installable` is a flake reference to a derivation or a NixOS configuration. For example, if you have NixOS configs on GitHub, you would use `github:myusername/nixos-configs#nixosConfigurations.mycomputer`. If your configs are elsewhere, you could use the more generic `git+https://git.example.com/myusername/nixos-configs#nixosConfigurations.mycomputer`, or even run against a local checkout using `path:.#nixosConfigurations.mycomputer`.
-
-The default bundler is `#unmaintained`. You can specify a bundler by name using `--bundler github:Jaculabilis/maintainers#bundlername`.
-
-## Bundlers
-
-### unmaintained
-
-This bundler accepts a derivation or a NixOS configuration and returns a report containing a list of derivations in the closure of the input that have no maintainer in nixpkgs. (Put simply: it returns a list of unmaintained dependency packages.) Each package is accompanied by a link to the package source in nixpkgs. If you see a package in your report that you care about, sign up as a maintainer!
+This bundler accepts a derivation or a NixOS configuration and returns a report containing a list of derivations in the closure of the input that have no maintainer in nixpkgs. Each package is accompanied by a link to the package source in nixpkgs. If you see a package in your report that you care about, sign up as a maintainer!
 
 Note that many derivations have no `.meta.maintainers`, e.g. `fetchTarball`. This list specificaly includes packages that _have_ a `.meta.maintainers` that is empty.
 

checks.nix

@@ -1,65 +0,0 @@
-{
-  self,
-  nixosSystem,
-  pkgs,
-  ...
-}:
-let
-  # A dummy package with no maintainer
-  orphanPkg = pkgs.stdenv.mkDerivation {
-    name = "dummy-unmaintained-package";
-    installPhase = ''
-      echo "dummy-unmaintained-package" > $out
-    '';
-    meta = {
-      maintainers = [ ];
-    };
-  };
-
-  # A dummy package with a maintainer
-  parentPkg = pkgs.stdenv.mkDerivation {
-    name = "dummy-maintained-package";
-    buildInputs = [ orphanPkg ];
-    installPhase = ''
-      echo "dummy-maintained-package" > $out
-    '';
-    meta = {
-      maintainers = [ { github = "github"; } ];
-    };
-  };
-
-  # A dummy NixOS config with an unmaintained package in its closure
-  config = nixosSystem {
-    inherit (pkgs) system;
-    modules = [
-      (
-        { ... }:
-        {
-          environment.systemPackages = [ parentPkg ];
-          # Boilerplate so nixosSystem compiles
-          fileSystems."/" = {
-            device = "/dev/dvd";
-            fsType = "ext4";
-          };
-          boot.loader.grub.device = "/dev/dvd";
-          system.stateVersion = "24.05";
-        }
-      )
-    ];
-  };
-
-  inherit (self.bundlers.${pkgs.system}) all unmaintained;
-
-  grepCheck =
-    name: search: target:
-    pkgs.runCommandLocal name { } ''
-      wc -l ${target} >> test.log
-      grep ${search} ${target} >> test.log
-      cp test.log $out
-    '';
-in
-{
-  package = grepCheck "package" orphanPkg.name (unmaintained orphanPkg);
-  packageClosure = grepCheck "packageClosure" orphanPkg.name (unmaintained parentPkg);
-  configClosure = grepCheck "configClosure" orphanPkg.name (unmaintained config);
-}

flake.nix

@@ -2,40 +2,18 @@
   outputs =
     { self, nixpkgs, ... }:
     let
-      supportedSystems = [
-        "x86_64-linux"
-        "x86_64-darwin"
-        "aarch64-linux"
-        "aarch64-darwin"
-      ];
-      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
-      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
       system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+      lib = import ./lib.nix { inherit pkgs; };
+      inherit (lib) allMaintainers expandInput noMaintainers;
     in
     {
-      lib = forAllSystems (system: import ./lib.nix { pkgs = nixpkgsFor.${system}; });
-
-      bundlers = forAllSystems (
-        system:
-        let
-          inherit (self.lib.${system}) allMaintainers expandInput noMaintainers;
-        in
-        {
-          default = self.bundlers.${system}.unmaintained;
+      bundlers."x86_64-linux" = rec {
+        default = unmaintained;
         all = drv: allMaintainers (expandInput drv);
         unmaintained = drv: noMaintainers (expandInput drv);
-        }
-      );
+      };
 
-      formatter = forAllSystems (system: nixpkgsFor.${system}.nixfmt-rfc-style);
-
-      checks = forAllSystems (
-        system:
-        import ./checks.nix {
-          inherit self;
-          inherit (nixpkgs.lib) nixosSystem;
-          pkgs = nixpkgsFor.${system};
-        }
-      );
+      formatter."x86_64-linux" = pkgs.nixfmt-rfc-style;
     };
 }

lib.nix

@@ -1,6 +1,7 @@
 { pkgs, ... }:
 let
   inherit (builtins)
+    genericClosure
     hasAttr
     head
     length
@@ -9,7 +10,16 @@ let
     tail
     ;
   inherit (pkgs) runCommandLocal writeText;
-  inherit (pkgs.lib) concatLines concatStringsSep filter;
+  inherit (pkgs.lib)
+    concatLines
+    concatLists
+    concatMap
+    concatStringsSep
+    filter
+    isDerivation
+    isList
+    mapAttrsToList
+    ;
   inherit (import ./closure.nix { inherit pkgs; }) drvClosure;
 in
 rec {
@@ -61,7 +71,10 @@ rec {
   expandInput =
     input:
     if (input.class or null == "nixos") && (input._type or null == "configuration") then
-      [ input.config.system.build.toplevel ] ++ input.config.environment.systemPackages
+      [
+        input.config.system.build.toplevel
+        input.config.environment.systemPackages
+      ]
     else
       input;
 }

result

@@ -1 +0,0 @@
-/nix/store/jji7927zp2qx8j5yazg8hj32mgpqlf76-check-nixos-config