refactor(cabal-install-solver): remove workaround for bug closed years ago#11649
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It looks like 8.0.2 is the earliest GHC that we're currently testing against in CI.
…s ago Replace the manual `Functor` instance on `Progress` with `deriving (Functor)`. The manual instance was a workaround for a GHC 7.6.3 space leak (https://gitlab.haskell.org/ghc/ghc/-/issues/7436), which has long been fixed.
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Pull request overview
This PR modernizes Distribution.Solver.Types.Progress by removing an obsolete GHC 7.6.3-era workaround and using the standard derived Functor instance instead, aligning the code with current compiler behavior.
Changes:
- Added
DeriveFunctorlanguage pragma for the module. - Replaced the manual
Functor (Progress step fail)instance withderiving (Functor)onProgress.
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Replace the manual
Functorinstance onProgresswithderiving (Functor). The manual instance was a workaroundfor a GHC 7.6.3 space leak (https://gitlab.haskell.org/ghc/ghc/-/issues/7436), which has long been fixed.