localrepo: abort creating a shared repo if the source does not have store

We cannot create a shared repository without a store IIUC. Let's abort in such
cases.

Differential Revision: https://phab.mercurial-scm.org/D8772

mercurial/localrepo.py

@@ -3334,6 +3334,14 b' def checkrequirementscompat(ui, requirem'
             )
             dropped.add(bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT)
 
+        if b'shared' in requirements or b'relshared' in requirements:
+            raise error.Abort(
+                _(
+                    b"cannot create shared repository as source was created"
+                    b" with 'format.usestore' config disabled"
+                )
+            )
+
     return dropped
 
 

tests/test-share.t

@@ -252,3 +252,9 b' Explicitly kill daemons to let the test '
 
   $ killdaemons.py
 
+Test sharing a repository which was created with store requirement disable
+
+  $ hg init nostore --config format.usestore=false
+  $ hg share nostore sharednostore
+  abort: cannot create shared repository as source was created with 'format.usestore' config disabled
+  [255]