Oliver Breitwieser 1cff717ca8 Fix git-related commands not working in worktrees ... If spack is checked out in a git worktree (see [1]), all git-related commands fail because the `spack_is_git_repo()`-check is not thorough enough. When developing in a feature-branch in a seperate worktree, this is annoying as all unittests regarding git-related spack commands fail, cluttering the test results with false-positives. [1]: https://git-scm.com/docs/git-worktree Change-Id: I94b573a2c0e058e9ccc169e7ee6561626fbb06fd		2020-05-04 14:39:25 -07:00
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spack	Fix git-related commands not working in worktrees	2020-05-04 14:39:25 -07:00