tests: use nixpkgs without unnecessary overlays

introduces a 'boring' nixpkgs used by default for running VM tests
in this repo, i.e. do not force others to build my current version
of things like lix, which I overlay & which are part of any system
closure, but not actually important for testing.

1 files changed, 10 insertions, 0 deletions

diff --git a/inputs.nix b/inputs.nix
index 8902303..7329531 100644
--- a/inputs.nix
+++ b/inputs.nix
@@ -34,6 +34,16 @@ let
       ];
     } // { outPath = sources.nixpkgs.outPath; };
 
+    # 'boring' version of nixpkgs with fewer (used for vm tests,
+    # so they're buildable without having to compile e.g. the lix version
+    # from the overlay)
+    nixpkgs-boring = import sources.nixpkgs {
+      inherit system;
+      overlays = [
+        (import ./pkgs/overlay.nix { inherit inputs; })
+      ];
+    } // { outPath = sources.nixpkgs.outPath; };
+
     nixpkgs-unstable =
       import sources.nixpkgs-unstable { inherit system; }
       // { outPath = sources.nixpkgs-unstable.outPath; };