Scott Wittenburg 91de23ce65 install cmd: --no-add in an env installs w/out concretize and add ... In an active concretize environment, support installing one or more cli specs only if they are already present in the environment. The `--no-add` option is the default for root specs, but optional for dependency specs. I.e. if you `spack install <depspec>` in an environment, the dependency-only spec `depspec` will be added as a root of the environment before being installed. In addition, `spack install --no-add <spec>` fails if it does not find an unambiguous match for `spec`.		2021-05-07 10:07:53 -07:00
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spack	install cmd: --no-add in an env installs w/out concretize and add	2021-05-07 10:07:53 -07:00