twitter/rsc
Experimental Scala compiler focused on compilation speed observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3303
- days_rel: n/a
- days_push: 1777
- n_releases_24m: 0
Adoption not part of the score
1233 stars · 48 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Rsc (Reasonable Scala compiler) is an experimental reimplementation of the Scala compiler focused on compilation speed, developed by Twitter's Language Tools team. It aims to study the compilation-time cost of Scala features and inform performance improvements in official Scala compilers.
Use cases
- compile Scala faster
- measure compilation overhead of Scala features
- research Scala compiler architecture
- experiment with a from-scratch Scala compiler
- identify a fast-compiling subset of Scala
When to choose
- you are researching Scala compiler performance
- you want to study how Scala idioms affect compile times
- you need SemanticDB-based dependency loading experiments
When to avoid
- you need a production Scala compiler with full compatibility
- you want new language features or type system improvements
- you need an actively maintained tool
Facets
cli-tool · maturity abandoned
compiler developer-tools compilers programming-languages performance developer-tools jvm cross-platform scala compilation-speed experimental-compiler semanticdb compiler
1 source
- readme: https://github.com/twitter/rsc · fetched 2026-08-28 · ba13aee27b63
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| twitter/rsc | main | 32 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem