From 83b968abcfe68a45c20e16b05efb4511255c0162 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Kr=C3=BCger?= <mkrueger@mgit.at>
Date: Fri, 12 Jul 2024 23:44:28 +0200
Subject: [PATCH] nixos_rebuild: allow adding build host

---
 roles/nixos_rebuild/templates/script.j2 | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/roles/nixos_rebuild/templates/script.j2 b/roles/nixos_rebuild/templates/script.j2
index 9715b18..2cb8bd4 100644
--- a/roles/nixos_rebuild/templates/script.j2
+++ b/roles/nixos_rebuild/templates/script.j2
@@ -9,10 +9,14 @@ fi
 export ANSIBLE_JSON={{ loc_json | quote }}
 
 if [ -v NIXOS_ANYWHERE ]; then
-  if [ -v NIXOS_METHOD ]; then
-    echo "ERR: Method not supported for NIXOS_ANYWHERE!" >&2
+  if [ -v NIXOS_METHOD ] || [ -v NIXOS_BUILD_HOST ]; then
+    echo "ERR: NIXOS_METHOD and/or NIXOS_BUILD_HOST not supported for NIXOS_ANYWHERE!" >&2
   fi
   {{ nix_wrapper | quote }} nix run github:nix-community/nixos-anywhere -- --option pure-eval "false" --flake {{ flake_url | quote }} {{ target_host | quote }}
 else
-  {{ nix_wrapper | quote }} nix run nixpkgs#nixos-rebuild -- --flake {{ flake_url | quote }} "${NIXOS_METHOD:-switch}" --use-substitutes --impure --target-host {{ target_host | quote }} --show-trace
+  EXTRA_ARGS=()
+  if [ -v NIXOS_BUILD_HOST ]; then
+    EXTRA_ARGS+=("--build-host" "$NIXOS_BUILD_HOST")
+  fi
+  {{ nix_wrapper | quote }} nix run nixpkgs#nixos-rebuild -- --flake {{ flake_url | quote }} "${NIXOS_METHOD:-switch}" --use-substitutes --impure --target-host {{ target_host | quote }} --show-trace "${EXTRA_ARGS[@]}"
 fi