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Jordan Harband
72a878447f
A version directory left without a working `bin/node` - e.g. a partial or interrupted earlier install - wedged reinstallation: `nvm install` saw the version as not installed and re-extracted, but the per-entry `mv` refused to overwrite the leftover non-empty `bin/`, `lib/`, … subdirectories and left a half-updated tree behind (and, without `-b`, fell back to a from-source compile) Remove any pre-existing version directory and move the freshly extracted tree into place with a single rename, so a version is either fully installed or not present at all. The removal is safe: it runs only after the tarball has downloaded and extracted successfully into the cache. Fall back to the previous per-entry move when a single rename cannot cross filesystems.