pre-build phase isn't working?

[kamek-pf]

Hi there,

I'm using postgresql-typed to check my queries against a live database instance at compile time through TH.
I need to pass some environment variables to the build, but I can't get it to work. This is what I have so far:

overlays = [
  haskell-nix.overlay
  (final: prev: {
    my-test-project =
      final.haskell-nix.project' {
        src = ./.;
        compiler-nix-name = "ghc945";
        modules = [{ dontStrip = false; }];
      };
    packages.my-test-project.preBuild = final.lib.mkForce ''
      export TPG_HOST=...
      export TPG_DB=...
      export TPG_USER=...
      export TPG_PASS=...
    '';
  })
];

Which I then build with nix build --no-sandbox.
It appears the build hook is never executed so I assume I'm using it wrong. Any pointers ?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[michaelpj]

Not sure if this is stale but it's pretty bad if the pre-build hook doesn't work.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[hamishmack]

I just noticed you are setting packages.my-test-project.preBuild in the wrong place. It needs to be set in the modules argument something like this instead:

overlays = [
  haskell-nix.overlay
  (final: prev: {
    my-test-project =
      final.haskell-nix.project' {
        src = ./.;
        compiler-nix-name = "ghc945";
        modules = [{
          dontStrip = false;
          packages.my-test-project.preBuild = final.lib.mkForce ''
            export TPG_HOST=...
            export TPG_DB=...
            export TPG_USER=...
            export TPG_PASS=...
          '';
        }];
      };
  })
];

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.