Greg Becker 75fafcece9 multiprocessing: allow Spack to run uninterrupted in background (#14682) ... Spack currently cannot run as a background process uninterrupted because some of the logging functions used in the install method (especially to create the dynamic verbosity toggle with the v key) cause the OS to issue a SIGTTOU to Spack when it's backgrounded. This PR puts the necessary gatekeeping in place so that Spack doesn't do anything that will cause a signal to stop the process when operating as a background process.		2020-03-20 12:22:32 -07:00
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spack	multiprocessing: allow Spack to run uninterrupted in background (#14682)	2020-03-20 12:22:32 -07:00