Switch Generation

nix-env --switch-generation - set user environment to given profile generation

Synopsis

nix-env {--switch-generation | -G} generation

Description

This operation makes generation number generation the current generation of the active profile. That is, if the profile is the path to the active profile, then the symlink profile is made to point to profile-generation-link, which is in turn a symlink to the actual user environment in the Nix store.

Switching will fail if the specified generation does not exist.

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Examples

$ nix-env --switch-generation 42
switching from generation 50 to 42