Todd Gamblin a8e8d80750 env: uninstall just removes specs that are still needed by other envs ... - previously, uninstall would complain if a spec was needed by an environment. - Now, we analyze dependents and dependent environments and simply remove (not uninstall) specs that are needed by environments		2018-11-11 18:32:24 -06:00
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spack	env: uninstall just removes specs that are still needed by other envs	2018-11-11 18:32:24 -06:00