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propellor 2.13.0 released with [[!toggle text="these changes"]]
[[!toggleable text="""
* RevertableProperty used to be assumed to contain info, but this is
now made explicit, with RevertableProperty HasInfo or
RevertableProperty NoInfo. (API change)
Transition guide:
- If you define a RevertableProperty, expect some type check
failures like: "Expecting one more argument to ‘RevertableProperty’".
- Change it to "RevertableProperty NoInfo"
- The compiler will then tell you if it needs "HasInfo" instead.
- If you have code that uses the RevertableProperty constructor
that fails to type check, use the more powerful <!> operator
instead to create the RevertableProperty.
* Various property combinators that combined a RevertableProperty
with a non-revertable property used to yield a RevertableProperty.
This was a bug, because the combined property could not be fully
reverted in many cases, and the result is now a non-revertable property.
* combineWith now takes an additional parameter to control how revert
actions are combined (API change).
* Added Propellor.Property.Concurrent for concurrent properties.
* Made the execProcess exported by propellor, and everything built on it,
avoid scrambled output when run concurrently.
* Propellor now depends on STM and text.
* The cabal file now builds propellor with -O. While -O0 makes ghc
take less memory while building propellor, it can lead to bad memory
usage at runtime due to eg, disabled stream fusion.
* Add File.isCopyOf. Thanks, Per Olofsson."""]]
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