fetching releases failed

[yarikoptic]

With the following config

(tinuous-dev) datalad@smaug:/mnt/datasets/datalad/ci/git-annex$ cat config.yml 
repo: datalad/git-annex
vars:
  common_path: 'builds/{year}//{month}//{day}/{type}-{type_id}/{build_commit[:8]}/{wf_name}-{number}-{common_status}/'
ci:
  github:
    path: '{common_path}'
    # place artifacts along with the logs
    artifacts_path: '{common_path}'
    # but releases separately and without subdataset
    releases_path: 'releases/'
    workflows:
    - build-macos.yaml
    - build-ubuntu.yaml
    - build-windows.yaml
since: 2021-04-27T00:00:00Z
types: [cron, pr, push]
datalad:
  enabled: true
  cfg_proc: text2git

eventually tinuous fetch (as of 0.2.0-30-g0215fbb) crashed with

2021-06-08T12:03:28-0400 [INFO    ] tinuous Fetching releases newer than 2021-04-27 00:00:00+00:00
2021-06-08T12:03:28-0400 [INFO    ] tinuous Found release 8.20210310
2021-06-08T12:03:28-0400 [INFO    ] tinuous Found release 8.20210428
Traceback (most recent call last):
  File "/home/datalad/miniconda3/envs/tinuous-dev/bin/tinuous", line 33, in <module>
    sys.exit(load_entry_point('tinuous', 'console_scripts', 'tinuous')())
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/datalad/miniconda3/envs/tinuous-dev/lib/python3.9/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context().obj, *args, **kwargs)
  File "/mnt/datasets/datalad/ci/tinuous/src/tinuous/__main__.py", line 128, in fetch
    path = asset.expand_path(cicfg.releases_path, cfg.vars)
  File "/mnt/datasets/datalad/ci/tinuous/src/tinuous/github.py", line 365, in expand_path
    return expand_template(path_template, self.path_fields(), vars)
  File "/mnt/datasets/datalad/ci/tinuous/src/tinuous/util.py", line 53, in expand_template
    expanded_vars[name] = fstring(tmplt, **fields, **expanded_vars)
  File "/mnt/datasets/datalad/ci/tinuous/src/tinuous/util.py", line 58, in fstring
    return cast(str, eval(f"f{s!r}", {}, kwargs))
  File "<string>", line 1, in <module>
NameError: name 'wf_name' is not defined

seems because we expand all variables unconditionally of either they are used or not in the given path. I guess we could just skip the variables which fail to expand ? (I guess would need at least some .debug level log message to be able to undig that later) or do you see a better way to resolve it @jwodder ?