Merge pull request #42 from numtide/testing

Do basic evaluation tests

Author: Mic92

flake.nix

@@ -43,14 +43,7 @@
             flake = publicInputs.self;
           }).value;
       };
-      nixosModules = {
-        boot = ./modules/nixos/boot.nix;
-        facter = ./modules/nixos/facter.nix;
-        firmware = ./modules/nixos/firmware.nix;
-        networking = ./modules/nixos/networking;
-        system = ./modules/nixos/system.nix;
-        virtualisation = ./modules/nixos/virtualisation.nix;
-      };
+      nixosModules.facter = ./modules/nixos/facter.nix;
     }
     //
       # DevOutputs
@@ -69,6 +62,20 @@
         checks = eachSystem (
           { pkgs, ... }:
           {
+            minimal-machine =
+              (pkgs.nixos [
+                publicInputs.self.nixosModules.facter
+                (
+                  { lib, config, ... }:
+                  {
+                    boot.loader.grub.devices = lib.mkForce [ "/dev/sda" ];
+                    fileSystems."/".device = lib.mkDefault "/dev/sda";
+                    users.users.root.initialPassword = "fnord23";
+                    system.stateVersion = config.system.nixos.version;
+                    nixpkgs.pkgs = pkgs;
+                  }
+                )
+              ]).config.system.build.toplevel;
             lib-tests = pkgs.runCommandLocal "lib-tests" { nativeBuildInputs = [ pkgs.nix-unit ]; } ''
               export HOME="$(realpath .)"
               export NIX_CONFIG='

modules/nixos/facter.nix

@@ -1,13 +1,8 @@
 {
   lib,
   config,
-  options,
   ...
 }:
-let
-  cfg = config.facter;
-  modulePath = lib.concatStringsSep "/" (lib.take 4 (lib.splitString [ "/" ] __curPos.file));
-in
 {
   imports = [
     ./bluetooth.nix
@@ -23,89 +18,14 @@ in
   options.facter = with lib; {
     report = mkOption {
       type = types.raw;
-      default = builtins.fromJSON (builtins.readFile config.facter.reportPath);
+      default = if config.facter.reportPath == null then {} else builtins.fromJSON (builtins.readFile config.facter.reportPath);
       description = "An import for the reportPath.";
     };
 
     reportPath = mkOption {
-      type = types.path;
+      type = types.nullOr types.path;
+      default = null;
       description = "Path to a report generated by nixos-facter.";
     };
-
-    debug = {
-      options = mkOption {
-        type = types.raw;
-        description = "All of the options affected by Facter modules";
-      };
-      config = mkOption {
-        type = types.raw;
-        description = "A breakdown of the NixOS config being applied by each Facter module.";
-      };
-    };
   };
-
-  config.facter.debug = {
-    options =
-      let
-        # we want all options except our own, otherwise we get into recursive issues
-        otherOptions = lib.filterAttrs (n: _: n != "facter") options;
-
-        # a filter for identifying options where a Facter module has affected the value
-        touchedByFacter =
-          { definitionsWithLocations, ... }:
-          let
-            # some options fail when we try to evaluate them, so we wrap this in tryEval
-            eval = builtins.tryEval (
-              builtins.any (
-                {
-                  file ? "",
-                  ...
-                }:
-                # we only want options affected by our modules
-                lib.hasPrefix "${modulePath}/modules/nixos" file
-              ) definitionsWithLocations
-            );
-          in
-          eval.success && eval.value;
-      in
-      lib.fold (a: b: lib.recursiveUpdate a b) { } (
-        map (value@{ loc, ... }: lib.setAttrByPath loc value) (
-          # we collect the options first with simple option filter, and then we filter them some more, otherwise we get
-          # a max-call depth exceeded error (dunno why)
-          lib.filter touchedByFacter (lib.collect lib.isOption otherOptions)
-        )
-      );
-
-    config =
-      # extract the config values for each option, broken down by facter module
-      lib.mapAttrsRecursiveCond
-        (
-          {
-            definitionsWithLocations ? null,
-            ...
-          }:
-          # keep recursing if we are not processing an option, otherwise apply the map function
-          definitionsWithLocations == null
-        )
-        (
-          _:
-          { definitionsWithLocations, ... }:
-          builtins.listToAttrs (
-            map
-              (
-                { file, value }:
-                {
-                  name = "<facter>${lib.removePrefix modulePath file}";
-                  inherit value;
-                }
-              )
-              (
-                # we only want facter modules
-                lib.filter ({ file, ... }: lib.hasPrefix modulePath file) definitionsWithLocations
-              )
-          )
-        )
-        cfg.debug.options;
-  };
-
 }

modules/nixos/virtualisation.nix

@@ -25,28 +25,28 @@ in
       defaultText = "hardware dependent";
     };
     oracle.enable = lib.mkEnableOption "Enable the Facter Virtualisation Oracle module" // {
-      default = report.virtualisation == "oracle";
+      default = report.virtualisation or null == "oracle";
       defaultText = "environment dependent";
     };
     parallels.enable = lib.mkEnableOption "Enable the Facter Virtualisation Parallels module" // {
-      default = report.virtualisation == "parallels";
+      default = report.virtualisation or null == "parallels";
       defaultText = "environment dependent";
     };
     qemu.enable = lib.mkEnableOption "Enable the Facter Virtualisation Qemu module" // {
-      default = builtins.elem report.virtualisation [
+      default = builtins.elem (report.virtualisation or null) [
         "qemu"
         "kvm"
         "bochs"
       ];
       defaultText = "environment dependent";
     };
     hyperv.enable = lib.mkEnableOption "Enable the Facter Virtualisation Hyper-V module" // {
-      default = report.virtualisation == "microsoft";
+      default = report.virtualisation or null == "microsoft";
       defaultText = "environment dependent";
     };
     # no virtualisation detected
     none.enable = lib.mkEnableOption "Enable the Facter Virtualisation None module" // {
-      default = report.virtualisation == "none";
+      default = report.virtualisation or null == "none";
       defaultText = "environment dependent";
     };
   };