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18 lines
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674 B
Markdown
18 lines
No EOL
674 B
Markdown
# Garbage Collector Roots
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The roots of the garbage collector are all store paths to which there
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are symlinks in the directory `prefix/nix/var/nix/gcroots`. For
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instance, the following command makes the path
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`/nix/store/d718ef...-foo` a root of the collector:
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```console
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$ ln -s /nix/store/d718ef...-foo /nix/var/nix/gcroots/bar
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```
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That is, after this command, the garbage collector will not remove
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`/nix/store/d718ef...-foo` or any of its dependencies.
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Subdirectories of `prefix/nix/var/nix/gcroots` are searched
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recursively. Symlinks to store paths count as roots. Symlinks to
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non-store paths are ignored, unless the non-store path is itself a
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symlink to a store path. |