Subject: [bug#37026] [PATCH] packages: Apply target triplet in bag-transitive-host-inputs.

From: David Thompson <[email-masked]>
Date: Wed, 14 Aug 2019 08:57:55 -0400

Fixes a bug where propagated inputs that should be cross-compiled are instead
compiled for the host system.

* guix/packages.scm (bag-transitive-host-inputs): Call transitive-inputs in
  the context of the bag's target system triplet.
---
 guix/packages.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/guix/packages.scm b/guix/packages.scm
index c94a651f27..143417b861 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -796,7 +796,8 @@ dependencies are known to build on SYSTEM."
 
 (define (bag-transitive-host-inputs bag)
   "Same as 'package-transitive-target-inputs', but applied to a bag."
-  (transitive-inputs (bag-host-inputs bag)))
+  (parameterize ((%current-target-system (bag-target bag)))
+    (transitive-inputs (bag-host-inputs bag))))
 
 (define (bag-transitive-target-inputs bag)
   "Return the \"target inputs\" of BAG, recursively."
-- 
2.17.1