# evant/gradle-retrolambda

A gradle plugin for getting java lambda support in java 6, 7 and android

Repository: https://github.com/evant/gradle-retrolambda
Canonical: https://ross.abutalabs.com/products/gradle-retrolambda
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2023-07-24T15:03:12+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4777, "days_push": 1136, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5253, forks 443 (observed 2026-08-28T04:09:13.710360+00:00)

## What it is
A Gradle plugin that integrates Retrolambda to backport Java 8 lambda expressions to Java 6/7 bytecode, including Android projects. It compiles sources with Java 8 and rewrites the resulting class files for older JVM targets.

## Use cases
- use java 8 lambdas in an android project targeting older apis
- backport lambda expressions to java 6 or 7 bytecode
- gradle plugin for retrolambda integration
- compile with java 8 but deploy to legacy jvms
- enable lambda syntax in legacy java builds

## When to choose
- you must support java 6/7 or old android devices but want lambda syntax
- your build uses gradle and an older android gradle plugin

## When to avoid
- you can target java 8+ or use desugaring built into modern android gradle plugin
- starting a new project today, since the plugin is in maintenance mode

## Facets
- artifact type: plugin
- maturity: maintenance
- function: build-tool, compiler, plugin-system
- domain: developer-tools, programming-languages, mobile-development
- platform: jvm
- tags: gradle-plugin, retrolambda, java-8-backport, lambdas, android-build, android

## Member repositories
- evant/gradle-retrolambda (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:13.710360+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:59:33.613230+00:00, confidence not recorded.
  - readme: https://github.com/evant/gradle-retrolambda (fetched 2026-08-28T04:09:13.710360+00:00, sha 675262ffa2ad)
- Data as of 2026-08-30T08:39:29.467469+00:00.