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Hackage2nix hackage db#703

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sternenseemann wants to merge 3 commits intomasterfrom
hackage2nix-hackage-db
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Hackage2nix hackage db#703
sternenseemann wants to merge 3 commits intomasterfrom
hackage2nix-hackage-db

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We still want to access nonpreferred versions in our parsed DB on
occasion. E.g. cabal2nix cabal://chronologique currently fails because
the package is deprecated and thus no version is preferred.
Now that we no longer filter out nonpreferred versions, users may want
to do this themselves. We expose (for completeness sake and because we
need to compute it anyways) the preferred VersionRange and tag every
version individually for convenience.
Before the recent changes to hackage-db, cabal2nix
cabal://<pkgname> (i.e. no explicit version requested) would never pick
a nonpreferred version. This change restores the old behavior for
packages that have preferred versions available. If none is available,
we keep picking the latest one.
@sternenseemann sternenseemann force-pushed the hackage2nix-hackage-db branch from 006ba65 to 0cca1fb Compare March 19, 2026 22:25
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