nixpkgs/pkgs/development/haskell-modules/lib.nix

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{ pkgs }:
rec {
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overrideCabal = drv: f: (drv.override (args: args // {
mkDerivation = drv: args.mkDerivation (drv // f drv);
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})) // {
overrideScope = scope: overrideCabal (drv.overrideScope scope) f;
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};
doHaddock = drv: overrideCabal drv (drv: { noHaddock = false; });
dontHaddock = drv: overrideCabal drv (drv: { noHaddock = true; });
doJailbreak = drv: overrideCabal drv (drv: { jailbreak = true; });
dontJailbreak = drv: overrideCabal drv (drv: { jailbreak = false; });
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doCheck = drv: overrideCabal drv (drv: { doCheck = true; });
dontCheck = drv: overrideCabal drv (drv: { doCheck = false; });
dontDistribute = drv: overrideCabal drv (drv: { hydraPlatforms = []; });
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appendConfigureFlag = drv: x: overrideCabal drv (drv: { configureFlags = (drv.configureFlags or []) ++ [x]; });
removeConfigureFlag = drv: x: overrideCabal drv (drv: { configureFlags = pkgs.stdenv.lib.remove x (drv.configureFlags or []); });
enableCabalFlag = drv: x: appendConfigureFlag (removeConfigureFlag drv "-f-${x}") "-f${x}";
disableCabalFlag = drv: x: appendConfigureFlag (removeConfigureFlag drv "-f${x}") "-f-${x}";
markBroken = drv: overrideCabal (drv: { broken = true; });
enableLibraryProfiling = drv: overrideCabal drv (drv: { enableLibraryProfiling = true; });
disableLibraryProfiling = drv: overrideCabal drv (drv: { enableLibraryProfiling = false; });
enableSharedExecutables = drv: overrideCabal drv ( { enableSharedExecutables = true; });
disableSharedExecutables = drv: overrideCabal drv ( { enableSharedExecutables = false; });
enableSharedLibraries = drv: overrideCabal drv (drv: { enableSharedLibraries = true; });
disableSharedLibraries = drv: overrideCabal drv (drv: { enableSharedLibraries = false; });
enableSplitObjs = drv: overrideCabal drv (drv: { enableSplitObjs = true; });
disableSplitObjs = drv: overrideCabal drv (drv: { enableSplitObjs = false; });
enableStaticLibraries = drv: overrideCabal drv (drv: { enableStaticLibraries = true; });
disableStaticLibraries = drv: overrideCabal drv (drv: { enableStaticLibraries = false; });
}