Change build order

Resolves: AlmaLinux/build-system#212

build_node/build_node_builder.py

@@ -261,7 +261,7 @@ def __upload_artifacts(self, artifacts_dir,
         return artifacts
 
     def __request_task(self):
-        supported_arches = [self.__config.base_arch]
+        supported_arches = ['src', self.__config.base_arch]
         if self.__config.base_arch == 'x86_64':
             supported_arches.append('i686')
         task = self.__call_master(

build_node/builders/base_rpm_builder.py

@@ -269,6 +269,8 @@ def build_packages(self, src_dir, spec_file=None):
         excluded, reason = self.is_build_excluded(srpm_path)
         if excluded:
             raise BuildExcluded(reason)
+        if self.task.arch == 'src':
+            return
         self.logger.info('starting RPM build')
         self.build_binaries(srpm_path, mock_defines)
         self.logger.info('RPM build completed')
@@ -441,6 +443,8 @@ def generate_mock_config(config, task, srpm_build=False):
                                **yum_config_kwargs)
         mock_config_kwargs = {'use_bootstrap_container': False, 'macros': {}}
         target_arch = task.arch
+        if target_arch == 'src':
+            target_arch = config.base_arch
         for key, value in task.platform.data['mock'].items():
             if key == 'target_arch':
                 target_arch = value

build_node/mock/mock_config.py

@@ -298,6 +298,8 @@ def get_default_legal_host_arches(target_arch):
             return 'ppc64le'
         elif target_arch in ('s390x', ):
             return 's390x'
+        elif target_arch == 'src':
+            return 'src'
         raise ValueError('there is no default_host_arches value for {0} '
                          'architecture'.format(target_arch))