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cabal2nix: fix build

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Without this change, the build fails with:

```
Warning:
    This package indirectly depends on multiple versions of the same package. This is very likely to cause a compile failure.
      package hackage-db (hackage-db-2.0.1-AliTRXEJBGFAEMpONOEnbV) requires Cabal-2.4.0.1
      package hpack (hpack-0.32.0-1iJuukTWmC4EGkYhAiFeII) requires Cabal-3.0.0.0-CD1INMNwoxXIKVgcu1nec5
      package distribution-nixpkgs (distribution-nixpkgs-1.3.1-82Z2DCdLAUs8Q2gjtlPLz5) requires Cabal-3.0.0.0-CD1INMNwoxXIKVgcu1nec5
      package cabal2nix (cabal2nix-2.15.0) requires Cabal-3.0.0.0-CD1INMNwoxXIKVgcu1nec5
      package cabal2nix (cabal2nix-2.15.0) requires Cabal-3.0.0.0-CD1INMNwoxXIKVgcu1nec5
      package cabal2nix (cabal2nix-2.15.0) requires Cabal-3.0.0.0-CD1INMNwoxXIKVgcu1nec5
```
This commit is contained in:
Michael Alan Dorman 2019-09-27 08:17:09 +03:00
parent cfe8afebe5
commit e7eb269d45
1 changed files with 6 additions and 2 deletions
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8
pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
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@ -95,7 +95,11 @@ self: super: {
# Newer versions don't compile.
resolv = self.resolv_0_1_1_2;
# cabal2nix needs the latest version of Cabal.
cabal2nix = super.cabal2nix.overrideScope (self: super: { Cabal = self.Cabal_3_0_0_0; });
# cabal2nix needs the latest version of Cabal, and the one
# hackage-db uses must match, so take the latest
cabal2nix = super.cabal2nix.overrideScope (self: super: {
Cabal = self.Cabal_3_0_0_0;
hackage-db = self.hackage-db_2_1_0;
});
}