constraint-rules
Extend GHC's type checker with user-defined rules, without writing a type checker plugin. (by YellPika)
ghc-proposals
Proposed compiler and language changes for GHC and GHC/Haskell (by goldfirere)
Our great sponsors
| constraint-rules | ghc-proposals | |
|---|---|---|
| 1 | 3 | |
| 17 | 5 | |
| - | - | |
| 1.8 | 0.0 | |
| over 2 years ago | 3 months ago | |
| Haskell | ||
| BSD 3-clause "New" or "Revised" License | - |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
constraint-rules
Posts with mentions or reviews of constraint-rules.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-09-10.
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[ANN/RFC] constraint-rules
constraint-rules provides a way to extend GHC's type checker with custom rules without having to write your own type checker plugin. See https://github.com/YellPika/constraint-rules for more info and some example code.
ghc-proposals
Posts with mentions or reviews of ghc-proposals.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-03-28.
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GHC Proposal breakage: should we proceed?
Inferred variables as a concept seems to be against "Explicit Variable Principle (EVP)" (mentioned in https://github.com/goldfirere/ghc-proposals/blob/type-variables/principles.rst, linked from https://github.com/ghc-proposals/ghc-proposals/pull/448). I agree with that priciple.
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[ANN/RFC] constraint-rules
I can't get it installed but does it allow deriving instances that need higher-order roles? The second argument of GList f a has a nominal role so we can't coerce through it but it should be representational if f is Representational1
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Haskell Methods
Maybe you'll like the Local Modules proposal.
What are some alternatives?
When comparing constraint-rules and ghc-proposals you can also consider the following projects:
typelevel-rewrite-rules - rewrite rules for type-level equalities