Add a config for the disc recovery machine.

nix/configuration/configuration.nix

@@ -57,6 +57,7 @@
     ./roles/podman
     ./roles/python
     ./roles/qemu
+    ./roles/recovery
     ./roles/reset
     ./roles/rpcs3
     ./roles/rust
@@ -147,21 +148,37 @@
     #   })
     # ];
 
-    nixpkgs.overlays = [
-      (final: prev: {
-        imagemagick = prev.imagemagick.overrideAttrs (old: rec {
-          # 7.1.2-6 seems to no longer exist, so use 7.1.2-7
-          version = "7.1.2-7";
+    nixpkgs.overlays =
+      let
+        disableTests = (
+          package_name:
+          (final: prev: {
+            "${package_name}" = prev."${package_name}".overrideAttrs (old: {
+              doCheck = false;
+              doInstallCheck = false;
+            });
+          })
+        );
+      in
+      [
+        (final: prev: {
+          imagemagick = prev.imagemagick.overrideAttrs (old: rec {
+            # 7.1.2-6 seems to no longer exist, so use 7.1.2-7
+            version = "7.1.2-7";
 
-          src = final.fetchFromGitHub {
-            owner = "ImageMagick";
-            repo = "ImageMagick";
-            tag = version;
-            hash = "sha256-9ARCYftoXiilpJoj+Y+aLCEqLmhHFYSrHfgA5DQHbGo=";
-          };
-        });
-      })
-    ];
+            src = final.fetchFromGitHub {
+              owner = "ImageMagick";
+              repo = "ImageMagick";
+              tag = version;
+              hash = "sha256-9ARCYftoXiilpJoj+Y+aLCEqLmhHFYSrHfgA5DQHbGo=";
+            };
+          });
+        })
+        (final: prev: {
+          grub2 = (final.callPackage ./package/grub { });
+        })
+        (disableTests "git")
+      ];
 
     # This option defines the first version of NixOS you have installed on this particular machine,
     # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.