API: Change default to _cache

docs/source/settings/general.md

@@ -39,6 +39,7 @@
         - random_state
         - shortest_event
         - memory_location
+        - memory_subdir
         - memory_file_method
         - memory_verbose
         - config_validation

docs/source/v1.5.md.inc

@@ -12,6 +12,8 @@
 
 [//]: # (### :warning: Behavior changes)
 
+- The default cache directory is now `_cache` within the derivatives folder when using `memory_location=True`, set [`memory_subdir="joblib"`][mne_bids_pipeline._config.memory_subdir] to get the behavior from v1.4 (#778 by @larsoner)
+
 [//]: # (- Whatever (#000 by @whoever))
 
 ### :medical_symbol: Code health

mne_bids_pipeline/_config.py

@@ -2107,7 +2107,14 @@ def noise_cov(bids_path):
 """
 If not None (or False), caching will be enabled and the cache files will be
 stored in the given directory. The default (True) will use a
-`'joblib'` subdirectory in the BIDS derivative root of the dataset.
+`"_cache"` subdirectory (name configurable via the
+[`memory_subdir`][mne_bids_pipeline._config.memory_subdir]
+variable) in the BIDS derivative root of the dataset.
+"""
+
+memory_subdir: str = "_cache"
+"""
+The caching directory name to use if `memory_location` is `True`.
 """
 
 memory_file_method: Literal["mtime", "hash"] = "mtime"

mne_bids_pipeline/_config_import.py

@@ -75,6 +75,7 @@ def _import_config(
         "interactive",
         # Caching
         "memory_location",
+        "memory_subdir",
         "memory_verbose",
         "memory_file_method",
         # Misc

mne_bids_pipeline/_run.py

@@ -123,7 +123,7 @@ class ConditionalStepMemory:
     def __init__(self, *, exec_params, get_input_fnames, get_output_fnames):
         memory_location = exec_params.memory_location
         if memory_location is True:
-            use_location = exec_params.deriv_root / "joblib"
+            use_location = exec_params.deriv_root / exec_params.memory_subdir
         elif not memory_location:
             use_location = None
         else: