Release 0.22.0

[SeanTAllen]

To turn back on dynamic scheduler scaling.

This is on hold at the request of me and @WallarooLabs as we haven't yet gotten our MacOS setup not tied to brew and this is a breaking change so we need time to update and coordinate the release.

[jemc]

@SeanTAllen - This came up on the sync call - what's the status of this release blocker?

[SeanTAllen]

Couple weeks and I'll do this release.

[mfelsche]

Let us make sure, we update the PyPI package of the https://github.com/ponylang/mkdocs-theme shortly before we actually do the release, so that the newly built stdlib docs will get all the new glory they deserve.

[SeanTAllen]

@mfelsche has the mkdocs-theme update been done?

[SeanTAllen]

Can anyone help me put together release notes for the various breaking changes that will be in this release? What previously worked, what it had to be changed to?

[mfelsche]

@SeanTAllen the mkdocs-theme has been updated: https://pypi.org/project/mkdocs-ponylang/

[SeanTAllen]

Holding on #2671

[SeanTAllen]

For release notes: #2463

Previously Env.out and Env.err where of the type StdStream. This worked fine but didn't make for easy testing of output. Env.out and Env.err are now of type OutStream which is an interface rather than a concrete type. By making Env expose and rely on the OutStream interface it is possible to create mock environments for testing. For example one can
implement an OutStreamStringAccumulator that accumulates output to a String that can then be checked in a unit test. Updating your code is straightforward. Change StdStream to OutStream for anything where you got the StdStream from Env.

-- note need to show an example and the error message as part of this.

[jemc]

For release notes: #2643

The SourceLoc interface is used for representing a location in Pony source code, filled in automatically by the compiler when using the __loc keyword. A type_name function has been added to this interface and the method function has been renamed as method_name for consistency. Any Pony code that was using SourceLoc and/or __loc objects to print the name of a method will need to be updated with this name change. They will also now have the type_name available to print, if they so choose.

[mfelsche]

Release notes for #2436 :

TheDate class has been renamed to PosixDate to better reflect that it is not a full grown date class that handles all corner cases, timezones, calendars. It is implemented after the POSIX tm struct. Its API stayed the same with the exception that now if provided with negative constructor parameters it will coalesce them to 0 to avoid creating invalid dates by accident.

[mfelsche]

Release notes for #2617 :

In the same realm of #2463 we made artificial Env instances even more customizable, which are mostly used for testing. It is now possible to "mock" both Env.input representing stdin and intercept setting the exitcode via Env.exitcode.

Env.input used to be of type Stdin which didn't allow easy mocking, now it is the interface InputStream which is easily implemented for testing. Stdinused to require a StdinNotify to receive stdin data to the application. In order to stay consistent with the new InputStream StdinNotify has been renamed to InputNotify.

[Theodus]

Release notes for #2578:

The ponybench microbenchmarking framework has changed to have more flexible configuration and produce more detailed statistics. The API now resembles that of the ponytest package and has a greater distinction between synchronous and asynchronous benchmarks. The new framework now provides the option to output CSV with the -csv flag. The CSV output may be used to create box plots, histograms, and other visual representations of the benchmark data. Details of how to use the new API are available in the package documentation.

[Praetonus]

Release notes for #2615:

The Hashable interface now requires objects to provide a hash() function returning USize instead of U64. If some of your types provide hash(), you should change the return type and modify the implementation accordingly. A Hashable64 interface requiring a hash64() function returning U64 is now available.

For #2499:

Pattern matching on generic capabilities is now prohibited. This means that code like the following example won't compile anymore.

fun foo[A: Any #send](a: A) =>
  match a
  | let a': Any val => print("val")
  else
    print("other")
  end

iftype should be used as a replacement.

fun foo[A: Any #send](a: A) =>
  iftype A <: Any val then
    print("val")
  else
    print("other")
  end

[SeanTAllen]

Unless something comes up, i'm releasing this weekend.

[SeanTAllen]

Blessing 2d98584

[SeanTAllen]

TravisCI and Appveyor are green

[SeanTAllen]

release underway

[SeanTAllen]

@stefantalpalaru @kamilchm release underway.

[SeanTAllen]

Homebrew PR submitted: Homebrew/homebrew-core#28250

[SeanTAllen]

Windows release is done

[SeanTAllen]

Linux releases are having difficulty getting all the dependencies. pcre in particular is where is timed out and then retried and appears to perhaps be hung.

[SeanTAllen]

There was what appears to be an environmental issue with the homebrew release. Will see what happens with that.

[SeanTAllen]

Cancelled travis job for debian and RPM releases. hopefully on restart the PRCE download issue is fixed.

[SeanTAllen]

Release notes PR opened: ponylang/ponylang-website#284

[SeanTAllen]

Docker release is broken and has been for about a month. So that's also an issue.

[SeanTAllen]

After much fighting, RPM and Debian packages are out.

[SeanTAllen]

Going to need to do a 0.22.1 release to get the Docker fixed now that I fixed that.

[SeanTAllen]

Homebrew is finally fixed. There were makefile changes made that I didn't know about that messed up the homebrew build pretty badly and it took quite a while to work out what had changed in the Makefile and some of the changes are little wonky and off and will need to be fixed.

to get the old equiv of destdir=/foo you now have to do ponydir=/foo prefix=.

¯_(ツ)_/¯

[stefantalpalaru]

Gentoo ebuild updated.