hydra-eval-jobs returned exit code 1:
warning: ignoring --gc-roots-dir (just supported for compatibility)
info: evaluation failed
debug: reading nix config from environment
debug: upstream nix daemon socket: /nix/var/nix/daemon-socket/socket
debug: ready for nix client connections
debug: opening FIFO for IPC: /var/lib/cizero/nix-sigstop/188915.pipe
debug: listening to events from build hooks
debug: nix client connected
warning: ignoring untrusted flake configuration setting 'allow-import-from-derivation'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-substituters'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-trusted-public-keys'.
Pass '--accept-flake-config' to trust it
trace: WARNING: No sha256 found for source-repository-package https://github.com/IntersectMBO/cardano-api ref=(unspecified) rev=4378724778a70b74e56ab3d040aae6926f455694 download may fail in restricted mode (hydra)
debug: finished proxying nix client connection: downstream_closed
error:
       … while calling anonymous lambda

         at «string»:68:1:

           67| };
           68| flake: let
             | ^
           69|   job = let

       … from call site

         at «string»:129:20:

          128|
          129|     jobAttrPaths = lib.collectAttrPaths lib.isDerivation jobAttrs;
             |                    ^
          130|   in

       … while calling 'collectAttrPaths'

         at «string»:20:33:

           19|
           20|   collectAttrPaths = predicate: attrs: let
             |                                 ^
           21|     internal = path: attrs: let

       … from call site

         at «string»:53:5:

           52|   in
           53|     internal [] attrs;
             |     ^
           54|

       … while calling 'internal'

         at «string»:21:22:

           20|   collectAttrPaths = predicate: attrs: let
           21|     internal = path: attrs: let
             |                      ^
           22|       inherit

       … from call site

         at «string»:36:11:

           35|         then
           36|           flattenDepth 1 (
             |           ^
           37|             map

       … while calling 'flattenDepth'

         at «string»:6:25:

            5|
            6|   flattenDepth = depth: x:
             |                         ^
            7|     if builtins.isList x && (depth == null || depth >= 0)

       … while calling 'flattenDepth'

         at «string»:6:25:

            5|
            6|   flattenDepth = depth: x:
             |                         ^
            7|     if builtins.isList x && (depth == null || depth >= 0)

       … while calling anonymous lambda

         at «string»:39:15:

           38|             (
           39|               attrName:
             |               ^
           40|                 internal

       … from call site

         at «string»:40:17:

           39|               attrName:
           40|                 internal
             |                 ^
           41|                 (path ++ [attrName])

       … while calling 'internal'

         at «string»:21:22:

           20|   collectAttrPaths = predicate: attrs: let
           21|     internal = path: attrs: let
             |                      ^
           22|       inherit

       … while calling anonymous lambda

         at «string»:25:12:

           24|           builtins.partition
           25|           (attrName: predicate attrs.${attrName})
             |            ^
           26|           (builtins.attrNames attrs)

       … from call site

         at «string»:25:22:

           24|           builtins.partition
           25|           (attrName: predicate attrs.${attrName})
             |                      ^
           26|           (builtins.attrNames attrs)

       … while calling 'isDerivation'

         at «string»:4:18:

            3|   # copied from nixpkgs
            4|   isDerivation = value: value.type or null == "derivation";
             |                  ^
            5|

       … while calling anonymous lambda

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/attrsets.nix:1571:24:

         1570|     let f = attrPath:
         1571|       zipAttrsWith (n: values:
             |                        ^
         1572|         let here = attrPath ++ [n]; in

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:498:16:

          497|       # Run all the tests and code coverage
          498|       checks = removeRecurseForDerivations checks;
             |                ^
          499|       inherit

       … while calling 'removeRecurseForDerivations'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:483:33:

          482|
          483|   removeRecurseForDerivations = x:
             |                                 ^
          484|     let clean = builtins.removeAttrs x ["recurseForDerivations"];

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:522:20:

          521|         , apps ? mkFlakeApps haskellPackages
          522|         , checks ? mkFlakeChecks (collectChecks' haskellPackages)
             |                    ^
          523|         , coverage ? {}

       … while calling 'mkFlakeChecks'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:471:19:

          470|   # Flatten the result of collectChecks or collectChecks' for use in flake `checks`
          471|   mkFlakeChecks = allChecks:
             |                   ^
          472|     foldrAttrVals

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:472:5:

          471|   mkFlakeChecks = allChecks:
          472|     foldrAttrVals
             |     ^
          473|       (package: acc:

       … while calling 'foldrAttrVals'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/lists.nix:121:20:

          120|   */
          121|   foldr = op: nul: list:
             |                    ^
          122|     let

       … from call site

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/lists.nix:128:8:

          127|         else op (elemAt list n) (fold' (n + 1));
          128|     in fold' 0;
             |        ^
          129|

       … while calling 'fold''

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/lists.nix:124:15:

          123|       len = length list;
          124|       fold' = n:
             |               ^
          125|         if n == len

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:481:8:

          480|       { }
          481|       (removeRecurseForDerivations allChecks);
             |        ^
          482|

       … while calling 'removeRecurseForDerivations'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:483:33:

          482|
          483|   removeRecurseForDerivations = x:
             |                                 ^
          484|     let clean = builtins.removeAttrs x ["recurseForDerivations"];

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:522:35:

          521|         , apps ? mkFlakeApps haskellPackages
          522|         , checks ? mkFlakeChecks (collectChecks' haskellPackages)
             |                                   ^
          523|         , coverage ? {}

       … while calling 'collectChecks'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/attrsets.nix:1973:5:

         1972|   recurseIntoAttrs =
         1973|     attrs:
             |     ^
         1974|     attrs // { recurseForDerivations = true; };

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/attrsets.nix:646:5:

          645|     pred:
          646|     set:
             |     ^
          647|     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/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/default.nix:519:29:

          518|           selectPackages ? haskellLib.selectProjectPackages
          519|         , haskellPackages ? selectPackages project.hsPkgs
             |                             ^
          520|         , packages ? mkFlakePackages haskellPackages

       … while calling 'filterAttrs'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/attrsets.nix:646:5:

          645|     pred:
          646|     set:
             |     ^
          647|     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/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-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/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/import-and-filter-project.nix:5:1:

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

       … while evaluating derivation 'cardano-cli-plan-to-nix-pkgs'
         whose name attribute is located at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'buildCommand' of derivation 'cardano-cli-plan-to-nix-pkgs'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/build-support/trivial-builders/default.nix:68:16:

           67|         enableParallelBuilding = true;
           68|         inherit buildCommand name;
             |                ^
           69|         passAsFile = [ "buildCommand" ]

       … while evaluating derivation 'cabal.project'
         whose name attribute is located at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'text' of derivation 'cabal.project'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/build-support/trivial-builders/default.nix:103:16:

          102|       ({
          103|         inherit text executable checkPhase allowSubstitutes preferLocalBuild;
             |                ^
          104|         passAsFile = [ "text" ]

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/call-cabal-project-to-nix.nix:236:9:

          235|         sourceRepoPackageResult.initialText +
          236|         pkgs.lib.strings.concatMapStrings (block:
             |         ^
          237|             if block ? sourceRepo

       … while calling 'concatMapStrings'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/lib/strings.nix:60:25:

           59|   */
           60|   concatMapStrings = f: list: concatStrings (map f list);
             |                         ^
           61|

       … while calling anonymous lambda

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/call-cabal-project-to-nix.nix:236:44:

          235|         sourceRepoPackageResult.initialText +
          236|         pkgs.lib.strings.concatMapStrings (block:
             |                                            ^
          237|             if block ? sourceRepo

       … while evaluating derivation 'source-repository-package'
         whose name attribute is located at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'buildCommand' of derivation 'source-repository-package'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/build-support/trivial-builders/default.nix:68:16:

           67|         enableParallelBuilding = true;
           68|         inherit buildCommand name;
             |                ^
           69|         passAsFile = [ "buildCommand" ]

       … from call site

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/call-cabal-project-to-nix.nix:209:56:

          208|               in __trace "WARNING: No sha256 found for source-repository-package ${repoData.url} ref=${repoData.ref or "(unspecified)"} rev=${repoData.rev or "(unspecified)"} download may fail in restricted mode (hydra)"
          209|                 (__trace "Consider adding `--sha256: ${hashPath drv}` to the ${cabalProjectFileName} file or passing in a sha256map argument"
             |                                                        ^
          210|                  drv);

       … while calling 'hashPath'

         at /nix/store/0wvkjzrr92b5x8gp5al49l96vjxzb3qk-source/lib/call-cabal-project-to-nix.nix:184:14:

          183|
          184|   hashPath = path:
             |              ^
          185|     builtins.readFile (pkgs.runCommand "hash-path" { preferLocalBuild = true; }

       … while evaluating derivation 'hash-path'
         whose name attribute is located at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'buildCommand' of derivation 'hash-path'

         at /nix/store/g2ysyzdx76m4z7lnmyddcwdz25lx7kn1-source/pkgs/build-support/trivial-builders/default.nix:68:16:

           67|         enableParallelBuilding = true;
           68|         inherit buildCommand name;
             |                ^
           69|         passAsFile = [ "buildCommand" ]

       error: fetchTree argument 'ref' is null while a string, Boolean or integer is expected
debug: nix command terminated: Exited 1
info: max RSS: 832684032 bytes / 794.11 MiB / 0.78 GiB
debug: accepting no more nix client connections
debug: waiting for nix daemon proxy threads to finish
debug: all nix daemon proxy threads finished
debug: no longer listening to events from build hooks