error:
       … while calling the 'getAttr' builtin

         at /builtin/derivation.nix:19:19: (source not available)

       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'nonrequired'
         whose name attribute is located at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/pkgs/stdenv/generic/make-derivation.nix:300:7

       … while evaluating attribute 'constituents' of derivation 'nonrequired'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/pkgs/build-support/release/default.nix:51:16:

           50|     pkgs.runCommand name
           51|       { inherit constituents meta;
             |                ^
           52|         preferLocalBuild = true;

       … from call site

         at /nix/store/pbrfws2y97v9c9p29znbqca6m7bm82l0-source/ci/aggregates.nix:31:20:

           30|     meta.description = "Nonrequired jobs that should not affect CI status";
           31|     constituents = collectConstituents (p: !nonRequiredTest p);
             |                    ^
           32|   };

       … while calling 'collectConstituents'

         at /nix/store/pbrfws2y97v9c9p29znbqca6m7bm82l0-source/ci/aggregates.nix:11:25:

           10| }: let
           11|   collectConstituents = excludeTest:
             |                         ^
           12|     lib.collect lib.isDerivation

       … from call site

         at /nix/store/pbrfws2y97v9c9p29znbqca6m7bm82l0-source/ci/aggregates.nix:12:5:

           11|   collectConstituents = excludeTest:
           12|     lib.collect lib.isDerivation
             |     ^
           13|     (lib.mapAttrsRecursiveCond (v: !(lib.isDerivation v))

       … while calling 'collect'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:443:3:

          442|   # The attribute set to recursively collect.
          443|   attrs:
             |   ^
          444|     if pred attrs then

       … while calling 'collect'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:443:3:

          442|   # The attribute set to recursively collect.
          443|   attrs:
             |   ^
          444|     if pred attrs then

       … from call site

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:444:8:

          443|   attrs:
          444|     if pred attrs then
             |        ^
          445|       [ attrs ]

       … while calling 'isDerivation'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:640:5:

          639|     # Value to check.
          640|     value: value.type or null == "derivation";
             |     ^
          641|

       … while calling 'g'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:599:19:

          598|           g =
          599|             name: value:
             |                   ^
          600|             if isAttrs value && cond value

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:486:16:

          485|       # Run all the tests and code coverage
          486|       checks = removeRecurseForDerivations checks;
             |                ^
          487|       inherit

       … while calling 'removeRecurseForDerivations'

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:471:33:

          470|
          471|   removeRecurseForDerivations = x:
             |                                 ^
          472|     let clean = builtins.removeAttrs x ["recurseForDerivations"];

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:510:20:

          509|         , apps ? mkFlakeApps haskellPackages
          510|         , checks ? mkFlakeChecks (collectChecks' haskellPackages)
             |                    ^
          511|         , coverage ? {}

       … while calling 'mkFlakeChecks'

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:459:19:

          458|   # Flatten the result of collectChecks or collectChecks' for use in flake `checks`
          459|   mkFlakeChecks = allChecks:
             |                   ^
          460|     foldrAttrVals

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:460:5:

          459|   mkFlakeChecks = allChecks:
          460|     foldrAttrVals
             |     ^
          461|       (package: acc:

       … while calling 'foldrAttrVals'

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:37:25:

           36|
           37|   foldrAttrVals = f: z: attrs:
             |                         ^
           38|     lib.foldr f z (builtins.attrValues attrs);

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:38:5:

           37|   foldrAttrVals = f: z: attrs:
           38|     lib.foldr f z (builtins.attrValues attrs);
             |     ^
           39|

       … while calling 'foldr'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/lists.nix:53:20:

           52|   */
           53|   foldr = op: nul: list:
             |                    ^
           54|     let

       … from call site

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/lists.nix:60:8:

           59|         else op (elemAt list n) (fold' (n + 1));
           60|     in fold' 0;
             |        ^
           61|

       … while calling 'fold''

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/lists.nix:56:15:

           55|       len = length list;
           56|       fold' = n:
             |               ^
           57|         if n == len

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:469:8:

          468|       { }
          469|       (removeRecurseForDerivations allChecks);
             |        ^
          470|

       … while calling 'removeRecurseForDerivations'

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:471:33:

          470|
          471|   removeRecurseForDerivations = x:
             |                                 ^
          472|     let clean = builtins.removeAttrs x ["recurseForDerivations"];

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:510:35:

          509|         , apps ? mkFlakeApps haskellPackages
          510|         , checks ? mkFlakeChecks (collectChecks' haskellPackages)
             |                                   ^
          511|         , coverage ? {}

       … while calling 'collectChecks'

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:184:31:

          183|   # This can be used to collect all the test runs in your project, so that can be run in CI.
          184|   collectChecks = packageSel: haskellPackages:
             |                               ^
          185|     let packageFilter = name: package: (package.isHaskell or false) && packageSel package;

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:186:8:

          185|     let packageFilter = name: package: (package.isHaskell or false) && packageSel package;
          186|     in recurseIntoAttrs (lib.mapAttrs (_: p: p.checks) (lib.filterAttrs packageFilter haskellPackages));
             |        ^
          187|

       … while calling 'recurseIntoAttrs'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:1018:5:

         1017|     # An attribute set to scan for derivations.
         1018|     attrs:
             |     ^
         1019|     attrs // { recurseForDerivations = true; };

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:186:57:

          185|     let packageFilter = name: package: (package.isHaskell or false) && packageSel package;
          186|     in recurseIntoAttrs (lib.mapAttrs (_: p: p.checks) (lib.filterAttrs packageFilter haskellPackages));
             |                                                         ^
          187|

       … while calling 'filterAttrs'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:309:5:

          308|     # The attribute set to filter
          309|     set:
             |     ^
          310|     listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/default.nix:507:29:

          506|           selectPackages ? haskellLib.selectProjectPackages
          507|         , haskellPackages ? selectPackages project.hsPkgs
             |                             ^
          508|         , packages ? mkFlakePackages haskellPackages

       … while calling 'filterAttrs'

         at /nix/store/75yg5df22m25b8pk2qmw843ydnbl0rsk-source/lib/attrsets.nix:309:5:

          308|     # The attribute set to filter
          309|     set:
             |     ^
          310|     listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));

       … from call site

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/overlays/haskell.nix:658:27:

          657|               callProjectResults = callCabalProjectToNix config;
          658|               plan-pkgs = importAndFilterProject {
             |                           ^
          659|                 inherit (callProjectResults) projectNix sourceRepos src;

       … while calling anonymous lambda

         at /nix/store/bdkxqq0n6h0jqxkxzhdnj9dccwvlw6cz-source/lib/import-and-filter-project.nix:5:1:

            4| { pkgs, haskellLib }:
            5| { projectNix, sourceRepos, src }:
             | ^
            6| let

       error: builder for '/nix/store/il7gf3s3kmrs8vrq16z3ic1cq9djd5wh-cardano-cli-plan-to-nix-pkgs.drv' failed with exit code 1;
       last 10 log lines:
       > cardano-api-8.6.0.0, cardano-api-8.5.2.0, cardano-api-8.5.0.0,
       > cardano-api-8.4.0.0, cardano-api-8.3.0.0, cardano-api-8.2.0.0,
       > cardano-api-8.1.1.1, cardano-api-8.1.1.0, cardano-api-8.1.0.1,
       > cardano-api-8.0.0, cardano-api-1.36.0, cardano-api-1.35.4, cardano-api-1.35.3
       > (has the same characteristics that caused the previous version to fail:
       > excluded by constraint '^>=8.33.0.0' from 'cardano-cli')
       > [__1] fail (backjumping, conflict set: cardano-api, cardano-cli)
       > After searching the rest of the dependency tree exhaustively, these were the
       > goals I've had most trouble fulfilling: cardano-cli, cardano-api
       > )
       For full logs, run 'nix log /nix/store/il7gf3s3kmrs8vrq16z3ic1cq9djd5wh-cardano-cli-plan-to-nix-pkgs.drv'.