Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
44 lines
1.6 KiB
Nix
44 lines
1.6 KiB
Nix
{ lib, haskell, haskellPackages, runCommand }:
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let
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src = lib.fileset.toSource {
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root = ./local;
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fileset = lib.fileset.unions [
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./local/app
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./local/CHANGELOG.md
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./local/local.cabal
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];
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};
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# This prevents the source from depending on the formatting of the ./local/generated.nix file
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localRaw = haskell.lib.compose.overrideSrc {
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inherit src;
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} (haskellPackages.callPackage ./local/generated.nix {});
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in
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lib.recurseIntoAttrs rec {
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helloFromCabalSdist = haskellPackages.buildFromCabalSdist haskellPackages.hello;
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# A more complicated example with a cabal hook.
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hercules-ci-cnix-store = haskellPackages.buildFromCabalSdist haskellPackages.hercules-ci-cnix-store;
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localFromCabalSdist = haskellPackages.buildFromCabalSdist localRaw;
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# NOTE: ./local refers to the "./." path in `./local/generated.nix`.
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# This test makes sure that localHasNoDirectReference can actually fail if
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# it doesn't do anything. If this test fails, either the test setup was broken,
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# or Haskell packaging has changed the way `src` is treated in such a way that
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# either the test or the design of `buildFromCabalSdist` needs to be reconsidered.
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assumptionLocalHasDirectReference = runCommand "localHasDirectReference" {
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drvPath = builtins.unsafeDiscardOutputDependency localRaw.drvPath;
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} ''
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grep ${src} $drvPath >/dev/null
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touch $out
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'';
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localHasNoDirectReference = runCommand "localHasNoDirectReference" {
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drvPath = builtins.unsafeDiscardOutputDependency localFromCabalSdist.drvPath;
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} ''
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grep -v ${src} $drvPath >/dev/null
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touch $out
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'';
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}
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