Struct PopularityMap 

pub struct PopularityMap {
    pub version: u32,
    pub packages: HashMap<String, u64>,
}

Co-occurrence scores for conda packages across the full tool registry.

Key: package name. Value: how many tools in the registry include it. Higher score = more popular = deserves its own OCI layer.

Scores are computed by bv-builder pack from the registry’s specs/ tree and committed as popularity.json. Each per-tool build reads this file and uses it to decide which packages get solo layers vs. the long-tail layer.

Stability guarantee: scores are keyed by package NAME only, not version. A new version of an already-popular package (e.g. Python 3.11.6 replacing 3.11.5) inherits the same popularity score and therefore the same layer priority, which means it still gets a solo layer, just with a different digest. This bounds layer-order churn when popular packages are upgraded.

Fields

version: u32

packages: HashMap<String, u64>

Package name → co-occurrence count (number of tools that list it).

Implementations

impl PopularityMap

pub fn new() -> Self

pub fn load(path: &Path) -> Result<Self>

pub fn save(&self, path: &Path) -> Result<()>

pub fn score(&self, package_name: &str) -> u64

Popularity score for a package, defaulting to 0 for unknowns.

pub fn record_tool(&mut self, package_names: &[String])

Record that all package_names appear together in one tool.

Trait Implementations

impl Clone for PopularityMap

fn clone(&self) -> PopularityMap

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PopularityMap

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PopularityMap

fn default() -> PopularityMap

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PopularityMap

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PopularityMap

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.