Provided by: nix-bin_2.24.9+dfsg-2ubuntu2_amd64 

Name
nix --repair-path - re-download path from substituter
Synopsis
nix-store --repair-path paths…
Description
The operation --repair-path attempts to “repair” the specified paths 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).
Example
$ nix-store --verify-path /nix/store/dj7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13
path `/nix/store/dj7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13' was modified!
expected hash `2db57715ae90b7e31ff1f2ecb8c12ec1cc43da920efcbe3b22763f36a1861588',
got `481c5aa5483ebc97c20457bb8bca24deea56550d3985cda0027f67fe54b808e4'
$ nix-store --repair-path /nix/store/dj7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13
fetching path `/nix/store/d7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13'...
…
nix-store --repair-path(1)