Tom Scogland 4acdfeae61 track whether a package was installed "explicitly" ... Adds a new attribute in the database to track whether a package was installed explicitly or not, where explicitly is the user running `spack install <package>` and implicitly is it being installed as a dependency. It also adds arguments to `spack find` to find these packages such that it should be possible to query the packages that were installed implicitly and are not currently depended upon any longer.		2016-05-16 08:08:40 -07:00
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spack	track whether a package was installed "explicitly"	2016-05-16 08:08:40 -07:00