muhammed: Move linux-builder to own file, add features for NixOS tests

1 files changed, 40 insertions, 0 deletions

diff --git a/hosts/muhammed/linux-builder/default.nix b/hosts/muhammed/linux-builder/default.nix
new file mode 100644
index 0000000..a4d2b8d
--- /dev/null
+++ b/hosts/muhammed/linux-builder/default.nix
@@ -0,0 +1,40 @@
+# Create a local Linux builder. This will allow us to build aarch64-linux
+# targets directly on this machine.
+#
+# It also does some related stuff to make NixOS tests work.
+
+{ ... }:
+
+{
+  nix.settings.trusted-users = ["linus"];
+
+  nix.linux-builder = {
+    enable = true;
+
+    # Clearing the VM state upon startup should improve reliability at the cost
+    # of some startup speed. Will have to re-evaluate if this trade off is
+    # worth it at some point.
+    ephemeral = true;
+
+    config = {pkgs, ...}: {
+      environment.systemPackages = with pkgs; [
+        # cntr is used to jump into the sandbox of packages that use breakpointHook.
+        pkgs.cntr
+
+        # Nix is used to debug and fetch other tools as needed.
+        pkgs.nix
+      ];
+
+      # Allow root login. This would normally be horrible but it's a local VM so who cares.
+      users.users.root.hashedPassword = "$y$j9T$TosKLKCZ.g9be.Wz5/qVJ.$YWvn4nAp8tn.xhHGBMOz748PHma6QGhN/WShilEbz8A";
+      services.openssh.permitRootLogin = "yes";
+    };
+  };
+
+  # Add system-features to the nix daemon that are needed for NixOS tests
+  # Starting with Nix 2.19, this will be automatic
+  nix.settings.system-features = [
+    "nixos-test"
+    "apple-virt"
+  ];
+}