Can't specify synapse label when using array indices and one-to-one connection rule

[zbarni]

Describe the bug

It's not possible to use pass a synapse_label parameter in the syn_spec dictionary, in conjunction with the one_to_one rule and node ids passed as arrays. It works when nodes are passed as NodeCollection, but this limits some use cases where the same node should appear multiple times.

To Reproduce

import nest
neurons = nest.Create('iaf_psc_exp', 2)
nest.Connect([1], [2], conn_spec='one_to_one', syn_spec={'synapse_model': 'static_synapse_lbl', 'synapse_label': 1})

gives the error

>> nest.lib.hl_api_exceptions.TypeMismatch: TypeMismatch in SLI function connect_arrays

However, the following works:

neurons = nest.Create('iaf_psc_exp', 2)
nest.Connect(nest.NodeCollection([1]), nest.NodeCollection([2]),
             conn_spec='one_to_one', syn_spec={'synapse_model': 'static_synapse_lbl', 'synapse_label': 1})

Removing the synapse_label parameter also works.

Expected behavior

Connection should be successful.

Desktop/Environment (please complete the following information):
cmake_summary.txt

• OS: Linux Mint 19.3, kernel 5.4.0-050400-generic
• Python-Version: 3.9.0
• NEST-Version: 3.2
• Installation: manual install inside Miniconda env, see attached file.

[github-actions]

Issue automatically marked stale!