Todd Gamblin d2e5b8474a bugfix: always generate a stack trace when spack is run with --debug (#11940) ... - We weren't previously printing stack traces on SystemExit or KeyboardInterrupts. - Either raise or print the stacktrace in these cases.		2019-07-05 19:57:00 -07:00
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spack	bugfix: always generate a stack trace when spack is run with --debug (#11940)	2019-07-05 19:57:00 -07:00