Move logic for tracking the build log into package.py (since that is what is

managing the build log) and expose as package.build_log_path.

lib/spack/spack/cmd/test-install.py

@@ -97,21 +97,14 @@ def create_test_output(topSpec, newInstalls, output):
         bId = BuildId(spec.name, spec.version, spec.dag_hash())
 
         package = spack.db.get(spec)
-        if package.installed:
+        with open(package.build_log_path, 'rb') as F:
-            buildLogPath = spack.install_layout.build_log_path(spec)
-        else:
-            #TODO: search recursively under stage.path instead of only within
-            #    stage.source_path
-            buildLogPath = join_path(package.stage.source_path, 'spack-build.out')            
-
-        with open(buildLogPath, 'rb') as F:
             lines = F.readlines()
             errMessages = list(line for line in lines if
                 re.search('error:', line, re.IGNORECASE))
             errOutput = errMessages if errMessages else lines[-10:]
             errOutput = '\n'.join(itertools.chain(
                     [spec.to_yaml(), "Errors:"], errOutput, 
-                    ["Build Log:", buildLogPath]))
+                    ["Build Log:", package.build_log_path]))
             
             output.add_test(bId, package.installed, errOutput)
         

lib/spack/spack/package.py

@@ -863,6 +863,14 @@ def do_install_dependencies(self, **kwargs):
             dep.package.do_install(**kwargs)
 
 
+    @property
+    def build_log_path(self):
+        if self.installed:
+            return spack.install_layout.build_log_path(spec)
+        else:
+            return join_path(self.stage.source_path, 'spack-build.out')   
+
+
     @property
     def module(self):
         """Use this to add variables to the class's module's scope.