This package addresses the /configuration problem/ which is propagating configurations that are available at run-time, allowing multiple configurations to coexist without resorting to mutable global variables or 'System.IO.Unsafe.unsafePerformIO'.
That package is an implementation of the ideas presented in the paper "Functional Pearl: Implicit Configurations" by Oleg Kiselyov and Chung-chieh Shan (<http://okmij.org/ftp/Haskell/tr-15-04.pdf original paper>). However, the API has been streamlined to improve performance.
Austin Seipp's tutorial <https://www.schoolofhaskell.com/user/thoughtpolice/using-reflection Reflecting values to types and back> provides a summary of the approach taken by this library, along with more motivating examples.
| Package Version | Update ID | Released | Package Hub Version | Platforms | Subpackages |
|---|---|---|---|---|---|
| 2.1.6-bp156.4.3 info | GA Release | 2023-12-07 | 15 SP6 |
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| 2.1.6-bp155.3.16 info | GA Release | 2023-05-22 | 15 SP5 |
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| 2.1.6-bp154.2.11 info | GA Release | 2022-05-09 | 15 SP4 |
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| 2.1.5-bp153.1.20 info | GA Release | 2021-04-08 | 15 SP3 |
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| 2.1.5-bp152.1.14 info | GA Release | 2020-06-16 | 15 SP2 |
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| 2.1.4-bp151.2.2 info | GA Release | 2019-07-17 | 15 SP1 |
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| 2.1.4-bp151.1.12 info | GA Release | 2019-05-31 | 15 SP1 |
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| 2.1.2-bp150.2.4 info | GA Release | 2018-07-30 | 15 |
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| 2.1.2-2.9 info | 5585 | 2016-09-14 | 12 GA-SP5 |
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| 2.1.2-2.3 info | 5585 | 2016-09-14 | 12 GA-SP5 |
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