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nix-super/src/nix/store-repair.md
Eelco Dolstra 61216d32e1 Add 'nix store repair' command
2021-01-13 23:27:39 +01:00

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Examples

  • Repair a store path, after determining that it is corrupt:

    # nix store verify /nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10
path '/nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10' was
modified! expected hash
'sha256:1hd5vnh6xjk388gdk841vflicy8qv7qzj2hb7xlyh8lpb43j921l', got
'sha256:1a25lf78x5wi6pfkrxalf0n13kdaca0bqmjqnp7wfjza2qz5ssgl'

# nix store repair /nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10

Description

This command attempts to "repair" the store paths specified by installables by redownloading them using the available substituters. If no substitutes are available, then repair is not possible.

Warning

During repair, there is a very small time window during which the old path (if it exists) is moved out of the way and replaced with the new path. If repair is interrupted in between, then the system may be left in a broken state (e.g., if the path contains a critical system component like the GNU C Library).

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