Repository Issues

scala/scala3

The Scala 3 compiler, also known as Dotty.

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Stars
 (6,247 stars)
Forks
 (1,159 forks)
Indexed issues
 (20 indexed issues)
open beginner issues
 (19 open beginner issues)
Latest indexed
Aug 14, 2026
Last GitHub push
May 14, 2026
License
Apache License 2.0
Contributing guide
Contributing guide
Code of conduct
No code of conduct
Dominant language
Scala
PR merge metrics
 (Avg merge 18d 14h) (133 merged PRs in 30d)
Beginner labels
help wantedgood first issue

Issues

19 open indexed issues

Open
Consider nullable annotations in explicit nulls
area:nullabilitycompat:javagood first issueitype:enhancementitype:question
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

scala / scala3 · #21629 · Sep 23, 2024 · Scala · 6,247 stars

9 comments3 reactions1 assignee
Open
doc tool - support GitHub flavoured markdown table
area:doctoolgood first issueitype:enhancement
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

scala / scala3 · #19525 · Jan 24, 2024 · Scala · 6,247 stars

1 comment0 reactions1 assignee
Open
Slow performance in a combination of features
area:inferarea:typerbackloghelp wanteditype:enhancementitype:performancestat:needs minimization
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #18763 · Oct 25, 2023 · Scala · 6,247 stars

12 comments0 reactions0 assignees
Open
Scala.js backend cannot emit static fields
area:backendarea:scala.jsexp:advancedhelp wanteditype:enhancement
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

scala / scala3 · #14710 · Mar 18, 2022 · Scala · 6,247 stars

1 comment0 reactions1 assignee
Open
Compiler error with -new-syntax and -source:3.0-migration
area:parserarea:rewriting toolbackloghelp wanteditype:bugprio:low
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #14694 · Mar 16, 2022 · Scala · 6,247 stars

2 comments0 reactions0 assignees
Open
Warn when a pattern-bound variable shadows a regular variable
area:pattern-matchingarea:reportingbackloghelp wanteditype:enhancement
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

scala / scala3 · #10749 · Dec 10, 2020 · Scala · 6,247 stars

5 comments2 reactions1 assignee
Open
cached derived instance loses refinements
help wanteditype:bugitype:enhancement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #10031 · Oct 18, 2020 · Scala · 6,247 stars

9 comments0 reactions0 assignees
Open
Improve debugging support by implementing JSR-45
area:backendcompat:scala2help wanteditype:enhancement
Why recommendedNo comments yet · Has a beginner-friendly label
No comments yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #9715 · Sep 3, 2020 · Scala · 6,247 stars

0 comments1 reaction1 assignee
Open
Rechecking inferred type arguments fails.
area:typerbackloghelp wanteditype:bug
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #9697 · Sep 1, 2020 · Scala · 6,247 stars

0 comments0 reactions0 assignees
Open
Port incremental compilation tests from Zinc
area:sbt-bridgearea:testinghelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #4650 · Jun 12, 2018 · Scala · 6,247 stars

0 comments0 reactions0 assignees
Open
Ycheck consistency between flags
backloghelp wanteditype:enhancement
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

scala / scala3 · #1329 · Jun 23, 2016 · Scala · 6,247 stars

0 comments0 reactions0 assignees