FileNotFound error in v2.7. but not v2.6

[forsyth2]

I'm getting FileNotFoundError: [Errno 2] No such file or directory: '/lcrc/group/e3sm/diagnostics/ilamb_data/DATA/mrro/Dai/basins_0.5x0.5.nc' when running ILAMB v2.7, but not ILAMB v2.6.

Is there a way to build a development environment for ILAMB (i.e., build ILAMB off an arbitrary commit rather than using an officially released version)? I was hoping to use git bisect to identify when this error was introduced and ultimately if it is an issue with ILAMB itself or in how I am using ILAMB.

Full stack trace:

Traceback (most recent call last):
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/bin/ilamb-run", line 993, in <module>
    S = Scoreboard(
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 508, in _\
_init__
    TraversePreorder(self.tree, _initConfrontation)
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 124, in T\
raversePreorder
    TraversePreorder(child, visit)
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 124, in T\
raversePreorder
    TraversePreorder(child, visit)
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 124, in T\
raversePreorder
    TraversePreorder(child, visit)
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 122, in T\
raversePreorder
    visit(node)
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Scoreboard.py", line 470, in _\
initConfrontation
    node.confrontation = Constructor(**(node.__dict__))
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/ConfTWSA.py", line 37, in __in\
it__
    self.basins = r.addRegionNetCDF4(
  File "/lcrc/soft/climate/e3sm-unified/base/envs/e3sm_unified_1.9.2rc2_chrysalis/lib/python3.10/site-packages/ILAMB/Regions.py", line 139, in addR\
egionNetCDF4
    dset = Dataset(filename)
  File "src/netCDF4/_netCDF4.pyx", line 2464, in netCDF4._netCDF4.Dataset.__init__
  File "src/netCDF4/_netCDF4.pyx", line 2027, in netCDF4._netCDF4._ensure_nc_success
FileNotFoundError: [Errno 2] No such file or directory: '/lcrc/group/e3sm/diagnostics/ilamb_data/DATA/mrro/Dai/basins_0.5x0.5.nc'

Providing the list of complete reproduction steps is somewhat complicated, since it comes up in testing the zppy (https://github.com/E3SM-Project/zppy) post-processing package. The error doesn't come up when I set the zppy test to use a version of E3SM Unified with ILAMB v2.6, but it does when I use a version with ILAMB v2.7.

[forsyth2]

More details on the error are in the "Error 2" section of E3SM-Project/zppy#538

[forsyth2]

The error seems to be that we did not run ilamb-fetch. Closing this issue.