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Fix package fetching for nixos-25.11 and nixos-unstable #59

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Fix package fetching for nixos-25.11 and nixos-unstable #59

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12 changes: 10 additions & 2 deletions src/Nix.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -230,9 +230,17 @@ downloadTo filePath commit =
-- Enable recursion into attribute sets that nix-env normally
-- doesn't look into so that we can get a more complete picture
-- of the available packages for the purposes of the index.
-- Inline `recurseIntoAttrs` instead of relying on it being on
-- `super`/`super.lib`. Old revisions (nixos-20.03 and earlier)
-- only expose it as `super.recurseIntoAttrs` because
-- `lib.recurseIntoAttrs` was added later (lands in 20.09).
-- Newer revisions (nixos-25.11+) no longer expose it on
-- `super` at all. Setting `recurseForDerivations = true` is
-- the underlying mechanism and has been stable across every
-- revision we index.
, " packageOverrides = super: {"
, " haskellPackages = super.recurseIntoAttrs super.haskellPackages;"
, " rPackages = super.recurseIntoAttrs super.rPackages;"
, " haskellPackages = super.haskellPackages // { recurseForDerivations = true; };"
, " rPackages = super.rPackages // { recurseForDerivations = true; };"
, " };"
, "}"
]
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