c8efec0295
This adds a `--root` option so that `spack style` can check style for a spack instance other than its own. We also change the inner workings of `spack style` so that `--config FILE` (and similar options for the various tools) options are used. This ensures that when `spack style` runs, it always uses the config from the running spack, and does *not* pick up configuration from the external root. - [x] add `--root` option to `spack style` - [x] add `--config` (or similar) option when invoking style tools - [x] add a test that verifies we can check an external instance |
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