Struct ProfileManager 

pub struct ProfileManager { /* private fields */ }

Manages a Nix-style symlink profile (e.g., system, per-user).

The profile lives as a symlink at {profile_dir}/{profile_name} pointing to {profile_dir}/{profile_name}-{N}-link where N is the generation number. Each generation link in turn points to a store path.

Implementations

impl ProfileManager

pub fn new(profile_dir: impl Into<PathBuf>, name: impl Into<String>) -> Self

Create a new profile manager.

Arguments

• profile_dir — directory containing profile symlinks
• name — profile name (e.g., "system")

pub fn system() -> Self

System profile manager using default paths.

pub fn profile_path(&self) -> PathBuf

Path to the main profile symlink (e.g., /nix/var/nix/profiles/system).

pub fn current_generation(&self) -> Result<Option<u32>, ProfileError>

Get the current generation number by reading the profile symlink.

Returns Ok(None) if the profile symlink does not exist yet.

pub fn list_generations(&self) -> Result<Vec<Generation>, ProfileError>

List all generations, sorted by number.

pub fn set(&self, store_path: &Path) -> Result<u32, ProfileError>

Set the profile to a new store path, creating a new generation.

Returns the new generation number.

pub fn switch_generation(&self, gen_num: u32) -> Result<(), ProfileError>

Switch to a specific existing generation number.

pub fn rollback(&self) -> Result<u32, ProfileError>

Rollback to the previous generation.

Returns the generation number that was switched to.

pub fn delete_generation(&self, gen_num: u32) -> Result<(), ProfileError>

Delete a specific generation (remove the -N-link symlink).

Cannot delete the currently active generation.