...
2. above may doom any scheme in which the set-up file is generated once and for all by RM or, at the very least, more inputs besides GLAST_EXT and INST_DIR will be required if the set-up file is to work on remote machines.
For discussion
- pfiles - under what circumstances must the environment variable PFILES be set in the standard fashion? Is it possible to extract this task into a separate script which could be treated as source (e.g., stored in ScienceTools-scons/containerSettings), to be invoked by _setup when needed?
- what to do about set-up on machines other than the one where the _setup file was built.