link_target error
Summary
I dont know if there is a issue with my branch of FD or not but buildstream should not be given a trace back but a error message.
(venvbuildstream) [will@wsx280 freedesktop-sdk]$ XDG_CACHE_HOME=/home/will/projects/buildstream/freedesktop-sdk/pullissue; bst build bootstrap/bootstrap.bst
[--:--:--][ ][ main:core activity ] START Build
[--:--:--][ ][ main:core activity ] START Loading elements
[--:--:--][ ][ main:core activity ] BUG 'buildstream._loader.loadelement.LoadElement' object has no attribute 'link_target'
Traceback (most recent call last):
File "/home/will/projects/buildstream/venvbuildstream/bin/bst", line 8, in <module>
sys.exit(cli())
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/core.py", line 829, in __call__
return self.main(*args, **kwargs)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_frontend/cli.py", line 280, in override_main
original_main(self, args=args, prog_name=prog_name, complete_var=None, standalone_mode=standalone_mode, **extra)
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/core.py", line 782, in main
rv = self.invoke(ctx)
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/core.py", line 1259, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/core.py", line 1066, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/core.py", line 610, in invoke
return callback(*args, **kwargs)
File "/home/will/projects/buildstream/venvbuildstream/lib64/python3.7/site-packages/click/decorators.py", line 33, in new_func
return f(get_current_context().obj, *args, **kwargs)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_frontend/cli.py", line 501, in build
app.stream.build(elements, selection=deps, ignore_junction_targets=ignore_junction_targets, remote=remote)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_stream.py", line 282, in build
dynamic_plan=True,
File "/home/will/projects/buildstream/buildstream/src/buildstream/_stream.py", line 1259, in _load
targets, except_targets, rewritable=False
File "/home/will/projects/buildstream/buildstream/src/buildstream/_stream.py", line 1139, in __load_elements_from_targets
elements, except_elements = self._pipeline.load(loadable, rewritable=rewritable)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_pipeline.py", line 77, in load
elements = self._project.load_elements(targets, rewritable=rewritable)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_project.py", line 449, in load_elements
meta_elements = self.loader.load(targets, task, rewritable=rewritable, ticker=None)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_loader/loader.py", line 117, in load
element = loader._load_file(name, rewritable, ticker)
File "/home/will/projects/buildstream/buildstream/src/buildstream/_loader/loader.py", line 564, in _load_file
if top_element.link_target is not None:
AttributeError: 'buildstream._loader.loadelement.LoadElement' object has no attribute 'link_target'
Steps to reproduce
checkout willsalmon/bst2-buildbox-fix from Freedesktop-sdk and build
