After an update, I've come up against another failure.

❯ nix build
warning: Git tree '/home/main/code/community/lamdu' is dirty
error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'Lamdu-0.8.1'
         whose name attribute is located at /nix/store/g3z13ffr1wzw8m9wivqyni2nbjl956wj-source/pkgs/stdenv/generic/make-derivation.nix:480:13

       … while evaluating attribute 'buildInputs' of derivation 'Lamdu-0.8.1'
         at /nix/store/g3z13ffr1wzw8m9wivqyni2nbjl956wj-source/pkgs/stdenv/generic/make-derivation.nix:535:13:
          534|             depsHostHost = elemAt (elemAt dependencies 1) 0;
          535|             buildInputs = elemAt (elemAt dependencies 1) 1;
             |             ^
          536|             depsTargetTarget = elemAt (elemAt dependencies 2) 0;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: function 'anonymous lambda' called with unexpected argument 'libxml'
       at /nix/store/zjbqzwnsp7092jagr1xgrd33dq1i35xp-cabal2nix-test-framework-0.8.2.2/default.nix:1:1:
            1| { mkDerivation, ansi-terminal, ansi-wl-pprint, base, bytestring
             | ^
            2| , containers, hostname, HUnit, lib, old-locale, QuickCheck, random

    overrides = final.lib.composeManyExtensions [
      (oldAttrs.overrides or (_: _: { }))

      final.lamdu-haskell-stacklock.stackYamlResolverOverlay
      final.lamdu-haskell-stacklock.stackYamlExtraDepsOverlay
      final.lamdu-haskell-stacklock.stackYamlLocalPkgsOverlay
      final.lamdu-haskell-stacklock.suggestedOverlay

      # (hfinal: hprev: {
      #   language-ecmascript = final.haskell.lib.dontCheck hprev.language-ecmascript;
      #   text-trie = final.haskell.lib.dontCheck hprev.text-trie;
      #   rocksdb-haskell = final.haskell.lib.dontCheck hprev.rocksdb-haskell;
      #   bindings-GLFW = final.haskell.lib.dontCheck hprev.bindings-GLFW;
      #   GLFW-b = final.haskell.lib.dontCheck hprev.GLFW-b;
      # })
    ];

I assume somewhere in here yeah?

This is my first time doing this. What would I put?

Just a few warnings to deal with!

trace: WARNING: `cleanSourceWith` called on /nix/store/qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source without a `name`. Consider adding `name = "qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source";`
trace: WARNING: `cleanSourceWith` called on /nix/store/qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source without a `name`. Consider adding `name = "qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source";`
trace: WARNING: `cleanSourceWith` called on /nix/store/qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source without a `name`. Consider adding `name = "qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source";`
trace: WARNING: `cleanSourceWith` called on /nix/store/qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source without a `name`. Consider adding `name = "qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source";`
trace: WARNING: `cleanSourceWith` called on /nix/store/qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source without a `name`. Consider adding `name = "qg6ddpd4fg9xk1qj3vkig57n995gn0fd-source";`
trace: WARNING: license "LicenseRef-GPL" not found
trace: WARNING: license "LicenseRef-GPL" not found