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dotty: 0.14.0-RC1 -> 0.19.0-RC1 #70037

wants to merge 4 commits into from

dotty: 0.14.0-RC1 -> 0.19.0-RC1 #70037

wants to merge 4 commits into from


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@jedossa jedossa commented Sep 29, 2019

Motivation for this change


Notable Changes


  • Implement @main functions
  • Allow infix operators at start of line
  • Drop do while
  • Alternative Syntax for Control Expressions
  • Allow significant indentation syntax
  • Change indentation rules to allow copy-paste
  • Switch to the 2.13 standard library
  • Allow collective parameters for extension methods
  • Implement generic number literals


  • Add toExprOfTuple in scala.quoted
  • Make toExprOfTuple produce tuples with precise types
  • Add quoted.Liftable[TupleN] with N > 22 to the stdlib
  • Add quoted.Liftable[BigInt] and quoted.Liftable[BigDecimal] to the stdlib
  • Add quoted ExprOps toExprOfSeq
  • Re-contextualize Liftable.toExpr
  • toExprOfTuple method with precise types
    -Factor out staging from the core of scala.quoted
  • Add scala.quoted.Liftables to the stdlib
  • Remove scala.quoted.QuoteError
  • Create dotty-staging library

Type class derivation

  • Add documentation for type class derivation
  • Removed redundant Shape type
  • Support implicit scope augmentation for Mirror


  • [DOC] Add ScalaDays 2019 talks
  • Release sbt-dotty 0.3.4, future-proof isDotty
  • In Scala.js mode, compile all lazy vals as thread-unsafe.

dotty: 0.19.0-RC1

Notable Changes


  • Make indentation significant in old-style control syntax
  • Don't require colon after class or object signatures
  • Replace the[...] by summon[...]
  • Allow given bindings in patterns
  • Replace delegate match with summonFrom.
  • Switch to ? for wildcard types
  • Require (...) around parameters of a lambda
  • Drop old syntax styles for givens


  • Upgrade to scala-library 2.13.1
  • Detect macro dependencies within the current run
  • Add dotty-staging.g8 in the staging documentation
  • Intrinsify scala.compiletime.testing.typeChecks
Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits
Notify maintainers

cc @karolchmist

jedossa added 2 commits Sep 29, 2019
dotty: 0.14.0-RC1 -> 0.18.1
@jedossa jedossa changed the title dotty: 0.14.0-RC1 -> 0.18.1 dotty: 0.14.0-RC1 -> 0.19.0-RC1 Sep 30, 2019
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@karolchmist karolchmist commented Sep 30, 2019

Builds and runs ok for me, thx for updating it!

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@karolchmist karolchmist commented Sep 30, 2019

I was wondering though if we should update to more stable releases, so to dotty-0.18.1 for example. @jedossa, do you need something from the 0.19.0-RC1 ?

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@jedossa jedossa commented Sep 30, 2019

@karolchmist it makes sense, setting to dotty- 0.18.1.

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@stale stale bot commented Jun 1, 2020

Thank you for your contributions.
This has been automatically marked as stale because it has had no activity for 180 days.
If this is still important to you, we ask that you leave a comment below. Your comment can be as simple as "still important to me". This lets people see that at least one person still cares about this. Someone will have to do this at most twice a year if there is no other activity.
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@stale stale bot added the 2.status: stale label Jun 1, 2020
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@tomberek tomberek commented Sep 7, 2020

Master is at 0.26.0-RC1. Closing as OBE.

@tomberek tomberek closed this Sep 7, 2020
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