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Version 0.19.4 released

The Nim team is happy to announce that the latest release of Nim, version 0.19.4, is now available. Nim is a systems programming language that focuses on performance, portability and expressiveness.

This is mostly a bugfix release of version 0.19.2. There are no breaking changes. The most important bugfixes are:

  • The mark&sweep GC had a serious performance regression that has been fixed.
  • The produced tarballs now support koch tests.
  • Json escaping has been fixed.
  • The documentation for async procs was missing, fixed.

Installing 0.19.4

If you have installed a previous version of Nim using choosenim, getting Nim 0.19.4 is as easy as:

$ choosenim update stable

If you don’t have it already, you can get choosenim by following these instructions or you can install Nim by following the instructions on our install page.

Bugfixes

  • Fixed “Latest HEAD segfaults when compiling Aporia” (#9889)
  • Fixed “smtp module doesn’t support threads.” (#9728)
  • Fixed “toInt doesn’t raise an exception” (#2764)
  • Fixed “allow import inside block: makes N runnableExamples run N x faster, minimizes scope pollution” (#9300)
  • Fixed “regression: CI failing Error: unhandled exception: cannot open: /Users/travis/.cache/nim/docgen_sample_d/runnableExamples/docgen_sample_examples.nim [IOError]” (#10188)
  • Fixed “Discrepancy in Documentation About ‘f128 Type-Suffix” (#10213)
  • Fixed “Performance regression with –gc:markandsweep” (#10271)
  • Fixed “cannot call template/macros with varargs[typed] to varargs[untyped]” (#10075)
  • Fixed “–embedsrc does not work on macos” (#10263)
  • Fixed “terminal.nim colored output is not GCSAFE.” (#8294)
  • Fixed “Path in error message has ..\..\..\..\..\ prefix since 0.19.0” (#9556)
  • Fixed ““contributing” is listed as a module on theindex” (#10287)
  • Fixed “[Regression] converter to string leads fail to compile on 0.19” (#9149)
  • Fixed “oids counter starts at zero; spec says it should be random” (#2796)