From 2a1d6e1faa42b8691e2b764809b4b9d9575b1386 Mon Sep 17 00:00:00 2001
From: Colin <colin@uninsane.org>
Date: Wed, 15 Mar 2023 00:54:05 +0000
Subject: [PATCH] roles/build-machine: ship qemu

---
 hosts/modules/roles/build-machine.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/hosts/modules/roles/build-machine.nix b/hosts/modules/roles/build-machine.nix
index 23baff65..564faf9c 100644
--- a/hosts/modules/roles/build-machine.nix
+++ b/hosts/modules/roles/build-machine.nix
@@ -1,4 +1,4 @@
-{ config, lib, sane-lib, ... }:
+{ config, lib, pkgs, sane-lib, ... }:
 
 let
   inherit (lib) mkIf mkMerge mkOption types;
@@ -22,7 +22,13 @@ in
   };
 
   config = mkMerge [
+    ({
+      sane.programs.qemu = pkgs.qemu;
+    })
     (mkIf cfg.enable {
+      # enable opt-in emulation of any package at runtime.
+      # i.e. `nix build '.#host-pkgs.moby.bash' ; qemu-aarch64 ./result/bin/bash`.
+      sane.programs.qemu.enableFor.user.colin = true;
       # serve packages to other machines that ask for them
       sane.services.nixserve.enable = true;