Fix crash in 'build' command when building with --local-package --alternative-project from a locally initialized .osc package

Author: dmach

osc/build.py

@@ -917,7 +917,7 @@ def main(apiurl, store, opts, argv):
     bc_file = None
     bi_filename = '_buildinfo-%s-%s.xml' % (repo, arch)
     bc_filename = '_buildconfig-%s-%s' % (repo, arch)
-    if store.is_package and os.access(core.store, os.W_OK):
+    if store is not None and store.is_package and os.access(core.store, os.W_OK):
         bi_filename = os.path.join(os.getcwd(), core.store, bi_filename)
         bc_filename = os.path.join(os.getcwd(), core.store, bc_filename)
     elif not os.access('.', os.W_OK):

osc/commandline.py

@@ -7408,10 +7408,19 @@ def do_build(self, subcmd, opts, *args):
                 pass
         else:
             try:
-                store = osc_store.get_store(os.path.dirname(Path.cwd()), print_warnings=True)
+                store = osc_store.get_store(Path.cwd(), print_warnings=True)
             except oscerr.NoWorkingCopy:
                 store = None
 
+            if store is None:
+                try:
+                    # if opts.local_package is set, build.main() reads project from the store and sets package to "_project"
+                    # that's why we're ok with store from the parent directory that holds information about the project
+                    # FIXME: the parent directory may contain a git repo that doesn't contain a project; we have no way of recognizing that!
+                    store = osc_store.get_store(os.path.dirname(Path.cwd()), print_warnings=True)
+                except oscerr.NoWorkingCopy:
+                    store = None
+
         # HACK: avoid calling some underlying store_*() functions from parse_repoarchdescr() method
         # We'll fix parse_repoarchdescr() later because it requires a larger change
         if not opts.alternative_project and isinstance(store, git_scm.GitStore):