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  • Hannes Siebenhandl's avatar
    50e999ca
    Speed up 'closure' computation in `ghc-pkg` · 50e999ca
    Hannes Siebenhandl authored and Marge Bot's avatar Marge Bot committed 
    Cache the set of already seen `UnitId`s and use `Set` operations to
speed up 'closure' computation.

Further simplify the implementation of 'closure' to account for the
actual usage.
As a consequence, we rename 'closure' to 'brokenPackages' to reflect its
purpose better after the simplification.
    50e999ca
    Speed up 'closure' computation in `ghc-pkg`
    Hannes Siebenhandl authored and Marge Bot's avatar Marge Bot committed 
    Cache the set of already seen `UnitId`s and use `Set` operations to
speed up 'closure' computation.

Further simplify the implementation of 'closure' to account for the
actual usage.
As a consequence, we rename 'closure' to 'brokenPackages' to reflect its
purpose better after the simplification.