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{ lib, haskellPackages, runCommand }:
let
localRaw = haskellPackages.callPackage ./local/generated.nix {};
in
lib.recurseIntoAttrs rec {
helloFromCabalSdist = haskellPackages.buildFromCabalSdist haskellPackages.hello;
# A more complicated example with a cabal hook.
hercules-ci-cnix-store = haskellPackages.buildFromCabalSdist haskellPackages.hercules-ci-cnix-store;
localFromCabalSdist = haskellPackages.buildFromCabalSdist localRaw;
assumptionLocalHasDirectReference = runCommand "localHasDirectReference" {
drvPath = builtins.unsafeDiscardOutputDependency localRaw.drvPath;
} ''
grep ${./local} $drvPath >/dev/null
touch $out
'';
localHasNoDirectReference = runCommand "localHasNoDirectReference" {
drvPath = builtins.unsafeDiscardOutputDependency localFromCabalSdist.drvPath;
} ''
grep -v ${./local} $drvPath >/dev/null
touch $out
'';
}
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