First read the path to the config file from the environment (Github i…

…ssue #226)

bidscoin/__init__.py

@@ -58,8 +58,11 @@
 schemafolder = bidscoinroot/'schema'
 pluginfolder = bidscoinroot/'plugins'
 
+# Get the BIDSCOIN_DEBUG environment variable to set the log-messages and logging level, etc
+DEBUG = platform.os.getenv('BIDSCOIN_DEBUG','').upper() in ('1', 'TRUE', 'Y', 'YES')
+
 # Create a BIDScoin user configuration directory if needed and load the BIDScoin user settings
-configfile     = Path.home()/'.bidscoin'/__version__/'config.toml'
+configfile     = platform.os.getenv('BIDSCOIN_CONFIG', Path.home()/'.bidscoin'/__version__/'config.toml')
 templatefolder = configfile.parent/'templates'
 templatefolder.mkdir(parents=True, exist_ok=True)
 if not configfile.is_file():
@@ -77,9 +80,6 @@
 if not bidsmap_template.is_file():
     warnings.warn(f"Missing template bidsmap: {bidsmap_template} (see {configfile})", RuntimeWarning)
 
-# Get the BIDSCOIN_DEBUG environment variable to set the log-messages and logging level, etc
-DEBUG = platform.os.getenv('BIDSCOIN_DEBUG','').upper() in ('1', 'TRUE', 'Y', 'YES')
-
 # Register the BIDScoin citation
 due.cite(Doi('10.3389/fninf.2021.770608'), description='A versatile toolkit to convert source data to the Brain Imaging Data Structure (BIDS)',
          path='bidscoin', version=__version__, cite_module=True, tags=['reference-implementation'])

bidscoin/cli/_bcoin.py

@@ -10,7 +10,8 @@
 Default settings and template bidsmaps are stored in the ".bidscoin" folder in your home directory
 (you can modify them to your needs with any plain text editor)
 
-Set the environment variable BIDSCOIN_DEBUG=TRUE to run BIDScoin in a more verbose logging mode.
+Set the environment variable BIDSCOIN_DEBUG=TRUE to run BIDScoin in a more verbose logging mode and
+BIDSCOIN_CONFIG=/writable/path/to/config.toml if you like to use a different config file.
 Citation reports can be generated with the help of duecredit (https://github.com/duecredit/duecredit)
 
 For more documentation see: https://bidscoin.readthedocs.io