Error: list index 0 is out of bounds

[chrjabs]

I'm currently trying to update my (quite a bit out of date) nixos setup, and I'm having some issues with Stylix. I first noticed the kitty and tmux styling in my config throwing error: list index 0 is out of bounds from within fromYaml.
I then tried to run the nix run github:nix-community/stylix#testbed:gnome:dark command from the README and the webpage, just as a sanity check, and that also fails with the same error.
Am I doing something wrong here? Shouldn't at least the testbed command evaluate without issues?

[awwpotato]

what's the output of nix-info --markdown? Can you provide any more information? We test all the testbeds on all supported platforms, so it should be working as far as I can tell. Also can you provide the entire error your getting?

[chrjabs]

Here is some more info:

nix-info --markdown:

• system: "x86_64-linux"
• host os: Linux 6.6.58, NixOS, 24.11 (Vicuna), 24.11.20241027.e34f2c0
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.9
• nixpkgs: /nix/store/4qnvii67b4v9nr1fla11q2wnw8m759pd-source

And the full error with --show-trace

Output of `nix run nix-community/stylix#testbed:gnome:dark --show-trace`

~~> nix run github:nix-community/stylix#testbed:gnome:dark --show-trace
error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'testbed-gnome-dark'
         whose name attribute is located at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/pkgs/stdenv/generic/make-derivation.nix:480:13

       … while evaluating attribute 'text' of derivation 'testbed-gnome-dark'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/pkgs/build-support/trivial-builders/default.nix:129:13:
          128|           inherit
          129|             text
             |             ^
          130|             executable

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/stylix/testbed/default.nix:96:15:
           95|           NIX_DISK_IMAGE="$directory/nixos.qcow2" \
           96|             ${lib.getExe system.config.system.build.vm}
             |               ^
           97|         '';

       … while calling 'getExe'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/meta.nix:434:5:
          433|   getExe =
          434|     x:
             |     ^
          435|     getExe' x (

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/meta.nix:435:5:
          434|     x:
          435|     getExe' x (
             |     ^
          436|       x.meta.mainProgram or (

       … while calling 'getExe''
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/meta.nix:480:8:
          479|   getExe' =
          480|     x: y:
             |        ^
          481|     assert assertMsg (isDerivation x)

       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:44:19:
           43|       value = commonAttrs // {
           44|         outPath = builtins.getAttr outputName strict;
             |                   ^
           45|         drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'nixos-vm'
         whose name attribute is located at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/pkgs/stdenv/generic/make-derivation.nix:480:13

       … while evaluating attribute 'buildCommand' of derivation 'nixos-vm'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/pkgs/build-support/trivial-builders/default.nix:80:17:
           79|         enableParallelBuilding = true;
           80|         inherit buildCommand name;
             |                 ^
           81|         passAsFile = [ "buildCommand" ] ++ (derivationArgs.passAsFile or [ ]);

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/nixos/modules/virtualisation/qemu-vm.nix:1389:19:
         1388|           mkdir -p $out/bin
         1389|           ln -s ${config.system.build.toplevel} $out/system
             |                   ^
         1390|           ln -s ${hostPkgs.writeScript "run-nixos-vm" startVM} $out/bin/run-${config.system.name}-vm

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1529:14:
         1528|         zipAttrsWith (
         1529|           n: values:
             |              ^
         1530|           let

       … while calling the 'head' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1534:13:
         1533|           if length values == 1 || pred here (elemAt values 1) (head values) then
         1534|             head values
             |             ^
         1535|           else

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1182:17:
         1181|         mapAttrs (
         1182|           name: value:
             |                 ^
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1183:85:
         1182|           name: value:
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value
             |                                                                                     ^
         1184|         );

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:273:71:
          272|           # For definitions that have an associated option
          273|           declaredConfig = mapAttrsRecursiveCond (v: !isOption v) (_: v: v.value) options;
             |                                                                       ^
          274|

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1084:7:
         1083|     // {
         1084|       value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |       ^
         1085|       inherit (res.defsFinal') highestPrio;

       … while evaluating the option `virtualisation.vmVariant.system.build.toplevel':

       … while evaluating the attribute 'mergedValue'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1131:5:
         1130|     # Type-check the remaining definitions, and merge them. Or throw if no definitions.
         1131|     mergedValue =
             |     ^
         1132|       if isDefined then

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1132:7:
         1131|     mergedValue =
         1132|       if isDefined then
             |       ^
         1133|         if all (def: type.check def.value) defsFinal then

       … while evaluating the attribute 'values'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1125:9:
         1124|       {
         1125|         values = defs''';
             |         ^
         1126|         inherit (defs'') highestPrio;

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1119:11:
         1118|           # Avoid sorting if we don't have to.
         1119|           if any (def: def.value._type or "" == "order") defs''.values then
             |           ^
         1120|             sortProperties defs''.values

       … while calling the 'any' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1119:14:
         1118|           # Avoid sorting if we don't have to.
         1119|           if any (def: def.value._type or "" == "order") defs''.values then
             |              ^
         1120|             sortProperties defs''.values

       … while evaluating the attribute 'values'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1252:7:
         1251|     {
         1252|       values = concatMap (def: if getPrio def == highestPrio then [ (strip def) ] else [ ]) defs;
             |       ^
         1253|       inherit highestPrio;

       … while calling the 'concatMap' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1252:16:
         1251|     {
         1252|       values = concatMap (def: if getPrio def == highestPrio then [ (strip def) ] else [ ]) defs;
             |                ^
         1253|       inherit highestPrio;

       … while calling the 'concatMap' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1099:17:
         1098|         # Process mkMerge and mkIf properties.
         1099|         defs' = concatMap (
             |                 ^
         1100|           m:

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1100:11:
         1099|         defs' = concatMap (
         1100|           m:
             |           ^
         1101|           map (

       … while calling the 'map' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1101:11:
         1100|           m:
         1101|           map (
             |           ^
         1102|             value:

       … while evaluating definitions from `/nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/nixos/modules/system/activation/top-level.nix':

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1110:80:
         1109|               }
         1110|           ) (addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))
             |                                                                                ^
         1111|         ) defs;

       … while calling 'dischargeProperties'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1203:5:
         1202|   dischargeProperties =
         1203|     def:
             |     ^
         1204|     if def._type or "" == "merge" then

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1204:5:
         1203|     def:
         1204|     if def._type or "" == "merge" then
             |     ^
         1205|       concatMap dischargeProperties def.contents

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:770:21:
          769|             inherit (module) file;
          770|             inherit value;
             |                     ^
          771|           }) module.config

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/nixos/modules/system/activation/top-level.nix:80:26:
           79|   # Handle assertions and warnings
           80|   baseSystemAssertWarn = lib.asserts.checkAssertWarn config.assertions config.warnings baseSystem;
             |                          ^
           81|

       … while calling 'checkAssertWarn'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/asserts.nix:193:27:
          192|   checkAssertWarn =
          193|     assertions: warnings: val:
             |                           ^
          194|     let

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/asserts.nix:197:5:
          196|     in
          197|     if failedAssertions != [ ] then
             |     ^
          198|       throw "\nFailed assertions:\n${concatStringsSep "\n" (map (x: "- ${x}") failedAssertions)}"

       … while calling the 'map' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/asserts.nix:195:26:
          194|     let
          195|       failedAssertions = map (x: x.message) (filter (x: !x.assertion) assertions);
             |                          ^
          196|     in

       … while calling the 'filter' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/asserts.nix:195:46:
          194|     let
          195|       failedAssertions = map (x: x.message) (filter (x: !x.assertion) assertions);
             |                                              ^
          196|     in

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/nixos/modules/system/activation/top-level.nix:80:54:
           79|   # Handle assertions and warnings
           80|   baseSystemAssertWarn = lib.asserts.checkAssertWarn config.assertions config.warnings baseSystem;
             |                                                      ^
           81|

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1182:17:
         1181|         mapAttrs (
         1182|           name: value:
             |                 ^
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1183:85:
         1182|           name: value:
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value
             |                                                                                     ^
         1184|         );

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:273:71:
          272|           # For definitions that have an associated option
          273|           declaredConfig = mapAttrsRecursiveCond (v: !isOption v) (_: v: v.value) options;
             |                                                                       ^
          274|

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1084:7:
         1083|     // {
         1084|       value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |       ^
         1085|       inherit (res.defsFinal') highestPrio;

       … while evaluating the option `virtualisation.vmVariant.assertions':

       (10 duplicate frames omitted)

       … while evaluating definitions from `/nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/nixos/common.nix':

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1110:80:
         1109|               }
         1110|           ) (addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))
             |                                                                                ^
         1111|         ) defs;

       … while calling 'dischargeProperties'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1203:5:
         1202|   dischargeProperties =
         1203|     def:
             |     ^
         1204|     if def._type or "" == "merge" then

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1208:31:
         1207|       if isBool def.condition then
         1208|         if def.condition then dischargeProperties def.content else [ ]
             |                               ^
         1209|       else

       … while calling 'dischargeProperties'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1203:5:
         1202|   dischargeProperties =
         1203|     def:
             |     ^
         1204|     if def._type or "" == "merge" then

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1204:5:
         1203|     def:
         1204|     if def._type or "" == "merge" then
             |     ^
         1205|       concatMap dischargeProperties def.contents

       … while evaluating the attribute 'content'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1363:23:
         1362|     _type = "if";
         1363|     inherit condition content;
             |                       ^
         1364|   };

       … from call site
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/nixos/common.nix:136:22:
          135|
          136|         assertions = lib.flatten (
             |                      ^
          137|           flip lib.mapAttrsToList cfg.users (

       … while calling 'flatten'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:13:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |             ^
          438|

       … while calling the 'concatMap' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:33:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |                                 ^
          438|

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:44:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |                                            ^
          438|

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:47:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |                                               ^
          438|

       … while calling 'flatten'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:13:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |             ^
          438|

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:16:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |                ^
          438|

       … while calling the 'isList' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:437:19:
          436|   */
          437|   flatten = x: if isList x then concatMap (y: flatten y) x else [ x ];
             |                   ^
          438|

       … while calling anonymous lambda
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/nixos/common.nix:138:19:
          137|           flip lib.mapAttrsToList cfg.users (
          138|             user: config:
             |                   ^
          139|             flip map config.assertions (assertion: {

       … from call site
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/nixos/common.nix:139:13:
          138|             user: config:
          139|             flip map config.assertions (assertion: {
             |             ^
          140|               inherit (assertion) assertion;

       … while calling 'flip'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/trivial.nix:306:11:
          305|   flip =
          306|     f: a: b:
             |           ^
          307|     f b a;

       … while calling the 'map' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/trivial.nix:307:5:
          306|     f: a: b:
          307|     f b a;
             |     ^
          308|

       … from call site
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/nixos/common.nix:139:22:
          138|             user: config:
          139|             flip map config.assertions (assertion: {
             |                      ^
          140|               inherit (assertion) assertion;

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1182:17:
         1181|         mapAttrs (
         1182|           name: value:
             |                 ^
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1183:85:
         1182|           name: value:
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value
             |                                                                                     ^
         1184|         );

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:273:71:
          272|           # For definitions that have an associated option
          273|           declaredConfig = mapAttrsRecursiveCond (v: !isOption v) (_: v: v.value) options;
             |                                                                       ^
          274|

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1084:7:
         1083|     // {
         1084|       value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |       ^
         1085|       inherit (res.defsFinal') highestPrio;

       … while evaluating the option `virtualisation.vmVariant.home-manager.users.guest.assertions':

       (10 duplicate frames omitted)

       … while evaluating definitions from `/nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/modules/misc/xdg-system-dirs.nix':

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1110:80:
         1109|               }
         1110|           ) (addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))
             |                                                                                ^
         1111|         ) defs;

       … while calling 'dischargeProperties'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1203:5:
         1202|   dischargeProperties =
         1203|     def:
             |     ^
         1204|     if def._type or "" == "merge" then

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1207:7:
         1206|     else if def._type or "" == "if" then
         1207|       if isBool def.condition then
             |       ^
         1208|         if def.condition then dischargeProperties def.content else [ ]

       … while calling the 'isBool' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1207:10:
         1206|     else if def._type or "" == "if" then
         1207|       if isBool def.condition then
             |          ^
         1208|         if def.condition then dischargeProperties def.content else [ ]

       … while evaluating the attribute 'condition'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1363:13:
         1362|     _type = "if";
         1363|     inherit condition content;
             |             ^
         1364|   };

       … while evaluating the attribute 'condition'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1363:13:
         1362|     _type = "if";
         1363|     inherit condition content;
             |             ^
         1364|   };

       … in the left operand of the OR (||) operator
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/modules/misc/xdg-system-dirs.nix:44:34:
           43|   config = lib.mkMerge [
           44|     (lib.mkIf (cfg.config != [ ] || cfg.data != [ ]) {
             |                                  ^
           45|       assertions = [

       … from call site
         at /nix/store/31ml5mp1hpbd2w71wmj76gil8gnz5pp6-source/modules/misc/xdg-system-dirs.nix:44:16:
           43|   config = lib.mkMerge [
           44|     (lib.mkIf (cfg.config != [ ] || cfg.data != [ ]) {
             |                ^
           45|       assertions = [

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1182:17:
         1181|         mapAttrs (
         1182|           name: value:
             |                 ^
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1183:85:
         1182|           name: value:
         1183|           if isAttrs value && cond value then recurse (path ++ [ name ]) value else f (path ++ [ name ]) value
             |                                                                                     ^
         1184|         );

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:273:71:
          272|           # For definitions that have an associated option
          273|           declaredConfig = mapAttrsRecursiveCond (v: !isOption v) (_: v: v.value) options;
             |                                                                       ^
          274|

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1084:7:
         1083|     // {
         1084|       value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |       ^
         1085|       inherit (res.defsFinal') highestPrio;

       … while evaluating the option `virtualisation.vmVariant.home-manager.users.guest.xdg.systemDirs.config':

       … while evaluating the attribute 'mergedValue'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1131:5:
         1130|     # Type-check the remaining definitions, and merge them. Or throw if no definitions.
         1131|     mergedValue =
             |     ^
         1132|       if isDefined then

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1134:11:
         1133|         if all (def: type.check def.value) defsFinal then
         1134|           type.merge loc defsFinal
             |           ^
         1135|         else

       … while calling 'merge'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:709:18:
          708|           merge =
          709|             loc: defs:
             |                  ^
          710|             map (x: x.value) (

       … while calling the 'map' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:710:13:
          709|             loc: defs:
          710|             map (x: x.value) (
             |             ^
          711|               filter (x: x ? value) (

       … while calling the 'filter' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:711:15:
          710|             map (x: x.value) (
          711|               filter (x: x ? value) (
             |               ^
          712|                 concatLists (

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:711:23:
          710|             map (x: x.value) (
          711|               filter (x: x ? value) (
             |                       ^
          712|                 concatLists (

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:711:26:
          710|             map (x: x.value) (
          711|               filter (x: x ? value) (
             |                          ^
          712|                 concatLists (

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:345:29:
          344|   */
          345|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |                             ^
          346|

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:345:32:
          344|   */
          345|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |                                ^
          346|

       … while calling anonymous lambda
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:716:26:
          715|                     imap1 (
          716|                       m: def':
             |                          ^
          717|                       (mergeDefinitions (loc ++ [ "[definition ${toString n}-entry ${toString m}]" ]) elemType [

       … while evaluating the attribute 'optionalValue'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1148:5:
         1147|
         1148|     optionalValue = if isDefined then { value = mergedValue; } else { };
             |     ^
         1149|   };

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1148:21:
         1147|
         1148|     optionalValue = if isDefined then { value = mergedValue; } else { };
             |                     ^
         1149|   };

       (8 duplicate frames omitted)

       … while evaluating definitions from `/nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix':

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1110:80:
         1109|               }
         1110|           ) (addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))
             |                                                                                ^
         1111|         ) defs;

       … while calling 'dischargeProperties'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1203:5:
         1202|   dischargeProperties =
         1203|     def:
             |     ^
         1204|     if def._type or "" == "merge" then

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/modules.nix:1204:5:
         1203|     def:
         1204|     if def._type or "" == "merge" then
             |     ^
         1205|       concatMap dischargeProperties def.contents

       … while evaluating the attribute 'value'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/types.nix:720:27:
          719|                           inherit (def) file;
          720|                           value = def';
             |                           ^
          721|                         }

       … while calling the 'elemAt' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:345:43:
          344|   */
          345|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |                                           ^
          346|

       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:44:19:
           43|       value = commonAttrs // {
           44|         outPath = builtins.getAttr outputName strict;
             |                   ^
           45|         drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'stylix-kde-config'
         whose name attribute is located at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/pkgs/stdenv/generic/make-derivation.nix:480:13

       … while evaluating attribute 'kdeglobals' of derivation 'stylix-kde-config'
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:286:11:
          285|           kded5rc = formatConfig kded5rc;
          286|           kdeglobals = formatConfig kdeglobals;
             |           ^
          287|         }

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:286:24:
          285|           kded5rc = formatConfig kded5rc;
          286|           kdeglobals = formatConfig kdeglobals;
             |                        ^
          287|         }

       … while calling 'formatConfig'
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:66:18:
           65|
           66|   formatConfig = data: lib.concatStringsSep "\n" (formatLines [ ] data);
             |                  ^
           67|

       … while calling the 'concatStringsSep' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:66:24:
           65|
           66|   formatConfig = data: lib.concatStringsSep "\n" (formatLines [ ] data);
             |                        ^
           67|

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:66:51:
           65|
           66|   formatConfig = data: lib.concatStringsSep "\n" (formatLines [ ] data);
             |                                                   ^
           67|

       … while calling 'formatLines'
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:54:11:
           53|   formatLines =
           54|     path: data:
             |           ^
           55|     if lib.isAttrs data then

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:62:9:
           61|       else
           62|         formatSection path data
             |         ^
           63|     else

       … while calling 'formatSection'
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:40:11:
           39|   formatSection =
           40|     path: data:
             |           ^
           41|     let

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:49:5:
           48|     in
           49|     lib.optional (directChildren != [ ]) header
             |     ^
           50|     ++ directChildren

       … while calling 'optional'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:777:20:
          776|   */
          777|   optional = cond: elem: if cond then [ elem ] else [ ];
             |                    ^
          778|

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:777:26:
          776|   */
          777|   optional = cond: elem: if cond then [ elem ] else [ ];
             |                          ^
          778|

       … while calling the 'partition' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:45:21:
           44|       children = lib.mapAttrsToList formatChild data;
           45|       partitioned = lib.partition lib.isString children;
             |                     ^
           46|       directChildren = partitioned.right;

       (8 duplicate frames omitted)

       … while evaluating a branch condition
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:55:5:
           54|     path: data:
           55|     if lib.isAttrs data then
             |     ^
           56|       if data ? _immutable then

       … while calling the 'isAttrs' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:55:8:
           54|     path: data:
           55|     if lib.isAttrs data then
             |        ^
           56|       if data ? _immutable then

       … while calling the 'concatStringsSep' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:78:21:
           77|   # look and feel package.
           78|   colorschemeSlug = lib.concatStrings (
             |                     ^
           79|     lib.filter lib.isString (builtins.split "[^a-zA-Z]" colors.scheme)

       … while calling the 'filter' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:79:5:
           78|   colorschemeSlug = lib.concatStrings (
           79|     lib.filter lib.isString (builtins.split "[^a-zA-Z]" colors.scheme)
             |     ^
           80|   );

       … while calling the 'split' builtin
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/modules/kde/hm.nix:79:30:
           78|   colorschemeSlug = lib.concatStrings (
           79|     lib.filter lib.isString (builtins.split "[^a-zA-Z]" colors.scheme)
             |                              ^
           80|   );

       … while evaluating the second argument passed to builtins.split

       … while evaluating the attribute 'colors'
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/stylix/palette.nix:173:5:
          172|     # See https://github.com/nix-community/stylix/pull/1408
          173|     lib.stylix.colors =
             |     ^
          174|       if cfg.base16Scheme == null then

       … from call site
         at /nix/store/44wqadx5b12d3rb25cirw86bv6lfni1b-source/stylix/palette.nix:177:10:
          176|       else
          177|         (cfg.base16.mkSchemeAttrs cfg.base16Scheme).override cfg.override;
             |          ^
          178|

       … while calling 'mkSchemeAttrs'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:110:5:
          109|     # (see https://github.com/base16-project/home/blob/main/builder.md#schemes-repository).
          110|     scheme:
             |     ^
          111|     let

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:121:24:
          120|       populatedColors = colors inputAttrs;
          121|     in populatedColors // allMeta // {
             |                        ^
          122|       withHashtag = populatedColors.withHashtag // allMeta;

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:120:25:
          119|       allMeta = inputMeta // builderMeta // coercionMeta // checkMeta // overrideMeta;
          120|       populatedColors = colors inputAttrs;
             |                         ^
          121|     in populatedColors // allMeta // {

       … while calling 'colors'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:62:12:
           61|   */
           62|   colors = scheme:
             |            ^
           63|     let

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:123:14:
          122|
          123|     in based // { inherit toList withHashtag; };
             |              ^
          124|

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:113:24:
          112|
          113|       based = base-hex // base-hex-rgb // base-rgb-rgb
             |                        ^
          114|         // base-dec-rgb // base-hex-bgr // base-short

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:89:18:
           88|
           89|       base-hex = lib.mapAttrs' (k: v: lib.nameValuePair "${k}-hex" v) base;
             |                  ^
           90|       base-short = lib.mapAttrs' (k: v: lib.nameValuePair "${k}" v) base;

       … while calling 'mapAttrs''
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1045:18:
         1044|   */
         1045|   mapAttrs' = f: set: listToAttrs (mapAttrsToList f set);
             |                  ^
         1046|

       … while calling the 'listToAttrs' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1045:23:
         1044|   */
         1045|   mapAttrs' = f: set: listToAttrs (mapAttrsToList f set);
             |                       ^
         1046|

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1045:36:
         1044|   */
         1045|   mapAttrs' = f: set: listToAttrs (mapAttrsToList f set);
             |                                    ^
         1046|

       … while calling 'mapAttrsToList'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1079:23:
         1078|   */
         1079|   mapAttrsToList = f: attrs: attrValues (mapAttrs f attrs);
             |                       ^
         1080|

       … while calling the 'attrValues' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1079:30:
         1078|   */
         1079|   mapAttrsToList = f: attrs: attrValues (mapAttrs f attrs);
             |                              ^
         1080|

       … while calling the 'mapAttrs' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:1079:42:
         1078|   */
         1079|   mapAttrsToList = f: attrs: attrValues (mapAttrs f attrs);
             |                                          ^
         1080|

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:65:15:
           64|       # normalize-colors will already be checked or is not in danger anyhow
           65|       base = (normalize-colors "" scheme).value;
             |               ^
           66|       # define local helper functions:

       … while calling 'normalize-colors'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:70:31:
           69|   */
           70|   normalize-colors = err-msg: raw:
             |                               ^
           71|     let

       … while calling a functor (an attribute set with a '__functor' attribute)
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:74:8:
           73|       check-color = color: builtins.isString color && builtins.stringLength (lib.removePrefix "#" color) == 6;
           74|     in success-monad baseXXs {
             |        ^
           75|       f = baseXXs:

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:7:9:
            6|         inherit success value;
            7|         __functor = self: { f, err-msg ? "" }:
             |         ^
            8|           let

       … while calling '__functor'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:7:27:
            6|         inherit success value;
            7|         __functor = self: { f, err-msg ? "" }:
             |                           ^
            8|           let

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:14:14:
           13|                   else trace-err { success = false; inherit (self) value; };
           14|           in res new;
             |              ^
           15|       };

       … while evaluating a branch condition
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:12:19:
           11|             trace-err = if err-msg == "" then (x: x) else builtins.trace err-msg;
           12|             new = if evaled'.success then evaled'
             |                   ^
           13|                   else trace-err { success = false; inherit (self) value; };

       … while evaluating the attribute 'success'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:79:11:
           78|         in {
           79|           success = builtins.length are-colors >= 1 && builtins.all (x: x) are-colors;
             |           ^
           80|           value = builtins.mapAttrs (_: value: lib.toLower (lib.removePrefix "#" value)) baseXXs;

       … in the left operand of the AND (&&) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:79:53:
           78|         in {
           79|           success = builtins.length are-colors >= 1 && builtins.all (x: x) are-colors;
             |                                                     ^
           80|           value = builtins.mapAttrs (_: value: lib.toLower (lib.removePrefix "#" value)) baseXXs;

       … in the argument of the not operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:79:48:
           78|         in {
           79|           success = builtins.length are-colors >= 1 && builtins.all (x: x) are-colors;
             |                                                ^
           80|           value = builtins.mapAttrs (_: value: lib.toLower (lib.removePrefix "#" value)) baseXXs;

       … while calling the 'lessThan' builtin
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:79:48:
           78|         in {
           79|           success = builtins.length are-colors >= 1 && builtins.all (x: x) are-colors;
             |                                                ^
           80|           value = builtins.mapAttrs (_: value: lib.toLower (lib.removePrefix "#" value)) baseXXs;

       … while calling the 'length' builtin
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:79:21:
           78|         in {
           79|           success = builtins.length are-colors >= 1 && builtins.all (x: x) are-colors;
             |                     ^
           80|           value = builtins.mapAttrs (_: value: lib.toLower (lib.removePrefix "#" value)) baseXXs;

       … while calling the 'attrValues' builtin
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:77:24:
           76|         let
           77|           are-colors = builtins.attrValues (builtins.mapAttrs (_: check-color) baseXXs);
             |                        ^
           78|         in {

       … while calling the 'mapAttrs' builtin
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:77:45:
           76|         let
           77|           are-colors = builtins.attrValues (builtins.mapAttrs (_: check-color) baseXXs);
             |                                             ^
           78|         in {

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:72:17:
           71|     let
           72|       baseXXs = lib.filterAttrs (name: _: lib.hasPrefix "base" name && builtins.stringLength name == 6) raw;
             |                 ^
           73|       check-color = color: builtins.isString color && builtins.stringLength (lib.removePrefix "#" color) == 6;

       … while calling 'filterAttrs'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:657:23:
          656|   */
          657|   filterAttrs = pred: set: removeAttrs set (filter (name: !pred name set.${name}) (attrNames set));
             |                       ^
          658|

       … while calling the 'removeAttrs' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/attrsets.nix:657:28:
          656|   */
          657|   filterAttrs = pred: set: removeAttrs set (filter (name: !pred name set.${name}) (attrNames set));
             |                            ^
          658|

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:113:20:
          112|       inherit (yaml-scheme2attrs scheme) parsedInput check;
          113|       inputAttrs = mkBase24 parsedInput;
             |                    ^
          114|       inputMeta = input-meta inputAttrs;

       … while calling 'mkBase24'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:25:14:
           24|   */
           25|   mkBase24 = scheme: scheme // {
             |              ^
           26|     base10 = scheme.base10 or scheme.base00;

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/colors.nix:25:29:
           24|   */
           25|   mkBase24 = scheme: scheme // {
             |                             ^
           26|     base10 = scheme.base10 or scheme.base00;

       … while evaluating the attribute 'parsedInput'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:47:24:
           46|       parsedInput = if is-not-parsed then parsedInput' else { inherit (parsed) slug; } // parsedInput';
           47|     in { inherit check parsedInput; };
             |                        ^
           48|

       … in the right operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:46:88:
           45|         else pkgs.emptyDirectory;
           46|       parsedInput = if is-not-parsed then parsedInput' else { inherit (parsed) slug; } // parsedInput';
             |                                                                                        ^
           47|     in { inherit check parsedInput; };

       … while evaluating a branch condition
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:35:12:
           34|           checked = normalize-colors msg.scheme-check-failed unchecked;
           35|         in if checked.success then unchecked else throw ''
             |            ^
           36|           ${msg.bad-mkSchemeAttrs-input}

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:34:21:
           33|           unchecked = convert-scheme-to-common-format raw;
           34|           checked = normalize-colors msg.scheme-check-failed unchecked;
             |                     ^
           35|         in if checked.success then unchecked else throw ''

       (16 duplicate frames omitted)

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:33:23:
           32|           raw = if is-not-parsed then scheme else parsed.scheme;
           33|           unchecked = convert-scheme-to-common-format raw;
             |                       ^
           34|           checked = normalize-colors msg.scheme-check-failed unchecked;

       … while calling 'convert-scheme-to-common-format'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:57:37:
           56|   */
           57|   convert-scheme-to-common-format = raw:
             |                                     ^
           58|     (raw.palette or {})

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:59:5:
           58|     (raw.palette or {})
           59|     // {
             |     ^
           60|       scheme = raw.name or "untitled";

       … while evaluating the attribute 'scheme'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:14:5:
           13|     ));
           14|     scheme = yaml2attrs yaml2attrs-args;
             |     ^
           15|   };

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/mk-scheme-attrs.nix:14:14:
           13|     ));
           14|     scheme = yaml2attrs yaml2attrs-args;
             |              ^
           15|   };

       … while calling 'yaml2attrs'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:87:16:
           86|   */
           87|   yaml2attrs = {
             |                ^
           88|     # The file to parse.

       … while evaluating a branch condition
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:104:9:
          103|       else if use-ifd == "never" then
          104|         if (check without-ifd).success then without-ifd
             |         ^
          105|         else builtins.trace msg.no-ifd-failed without-ifd

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:104:13:
          103|       else if use-ifd == "never" then
          104|         if (check without-ifd).success then without-ifd
             |             ^
          105|         else builtins.trace msg.no-ifd-failed without-ifd

       … while calling anonymous lambda
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:96:14:
           95|     # The default checks as if we are trying to parse a scheme.
           96|     check ? (raw: normalize-colors msg.scheme-check-failed (convert-scheme-to-common-format raw)),
             |              ^
           97|   }:

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:96:19:
           95|     # The default checks as if we are trying to parse a scheme.
           96|     check ? (raw: normalize-colors msg.scheme-check-failed (convert-scheme-to-common-format raw)),
             |                   ^
           97|   }:

       (16 duplicate frames omitted)

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:96:61:
           95|     # The default checks as if we are trying to parse a scheme.
           96|     check ? (raw: normalize-colors msg.scheme-check-failed (convert-scheme-to-common-format raw)),
             |                                                             ^
           97|   }:

       … while calling 'convert-scheme-to-common-format'
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:57:37:
           56|   */
           57|   convert-scheme-to-common-format = raw:
             |                                     ^
           58|     (raw.palette or {})

       … in the left operand of the update (//) operator
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:59:5:
           58|     (raw.palette or {})
           59|     // {
             |     ^
           60|       scheme = raw.name or "untitled";

       … from call site
         at /nix/store/2b3nkyn7grjkixvmflcx2nr41i9mblln-source/lib/util.nix:99:21:
           98|     let
           99|       without-ifd = fromYaml (builtins.readFile yaml);
             |                     ^
          100|       with-ifd = builtins.fromJSON (builtins.readFile (yaml2json yaml));

       … while calling 'parse'
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:34:11:
           33|
           34|   parse = text: let
             |           ^
           35|     lines = l.splitString "\n" text;

       … from call site
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:182:5:
          181|   in
          182|     make filtered (-1);
             |     ^
          183| in

       … while calling 'make'
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:108:19:
          107|     */
          108|     make = lines: i: let
             |                   ^
          109|       mNext = l.elemAt matched (i + 1);

       … from call site
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:143:9:
          142|       childrenMerged =
          143|         l.foldl
             |         ^
          144|         (all: cObj: (

       … while calling 'foldl'
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:194:14:
          193|   foldl =
          194|     op: nul: list:
             |              ^
          195|     let

       … from call site
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:198:5:
          197|     in
          198|     foldl' (length list - 1);
             |     ^
          199|

       … while calling 'foldl''
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:196:16:
          195|     let
          196|       foldl' = n: if n == -1 then nul else op (foldl' (n - 1)) (elemAt list n);
             |                ^
          197|     in

       … while evaluating a branch condition
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:196:19:
          195|     let
          196|       foldl' = n: if n == -1 then nul else op (foldl' (n - 1)) (elemAt list n);
             |                   ^
          197|     in

       … while calling the 'sub' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:198:25:
          197|     in
          198|     foldl' (length list - 1);
             |                         ^
          199|

       … while calling the 'length' builtin
         at /nix/store/wkjmkjrfr9ik1blw8zmv9g5xjl412py8-source/lib/lists.nix:198:13:
          197|     in
          198|     foldl' (length list - 1);
             |             ^
          199|

       … while calling the 'map' builtin
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:138:9:
          137|       childObjects =
          138|         l.map
             |         ^
          139|         (sIdx: make lines sIdx)

       … while evaluating a branch condition
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:135:9:
          134|       childIdxs =
          135|         if childIndent == null then [] else findChildIdxs (i+1);
             |         ^
          136|

       … while evaluating a branch condition
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:130:9:
          129|       childIndent =
          130|         if mNext.indent > currIndent
             |         ^
          131|         then mNext.indent

       … while calling the 'lessThan' builtin
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:130:25:
          129|       childIndent =
          130|         if mNext.indent > currIndent
             |                         ^
          131|         then mNext.indent

       … while calling the 'elemAt' builtin
         at /nix/store/kbjvsxnz3w9j29m2lmxv6psbcgn4mkdr-source/fromYaml.nix:109:15:
          108|     make = lines: i: let
          109|       mNext = l.elemAt matched (i + 1);
             |               ^
          110|       m = l.elemAt matched i;

       error: list index 0 is out of bounds

[danth]

What did you set base16Scheme to in your config?

Also, some things to try:

• Clear your eval cache:

  rm -r "${XDG_CACHE_HOME:-$HOME/.cache}/nix"

• Remove your flake.lock and build again (this will reset all inputs to their latest version)

[chrjabs]

When running the testbed via the nix run command I mentioned above, my config or flake.lock shouldn't affect anything, am I wrong?

And I've tried clearing the eval cache before, but I can check that later again.

[danth]

No, they should not affect it.

[chrjabs]

So, when trying to update my configuration I'm now also struggling with narHash mismatch issues for the non-flake inputs for stylix, so maybe there is indeed some corruption in my nix store, or something like that. I'll see if I can work this out, but I was potentially thinking of setting up this machine from scratch anyway, so that might make things easier.

[chrjabs]

I set up my system from scratch and didn't have issues then, so this must have indeed been some weird corruption, or something like that.