From 02b92dbf1073fff435be9e5fb91d5188f25c8fc1 Mon Sep 17 00:00:00 2001
From: Massimiliano Culpo <massimiliano.culpo@gmail.com>
Date: Tue, 22 Jun 2021 20:33:44 +0200
Subject: [PATCH] ASP-based solver: fix facts for default providers (#24380)

Facts used to compute weights for providers only need
the package name, since the other attributes are computed
as part of the solve.
---
 lib/spack/spack/solver/asp.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/spack/spack/solver/asp.py b/lib/spack/spack/solver/asp.py
index 94cc35d8dee..55573518de3 100644
--- a/lib/spack/spack/solver/asp.py
+++ b/lib/spack/spack/solver/asp.py
@@ -764,7 +764,8 @@ def virtual_preferences(self, pkg_name, func):
                 continue
 
             for i, provider in enumerate(providers):
-                func(vspec, provider, i + 10)
+                provider_name = spack.spec.Spec(provider).name
+                func(vspec, provider_name, i + 10)
 
     def provider_defaults(self):
         self.gen.h2("Default virtual providers")