"error: attribute 'alex' missing" when building for aarch64 (via emulation)

[funketh]

I'm using flakes and am building on x86_64. The build for x86_64 works fine but when I try to build for aarch64 (which would use qemu afaik) I get an error.

{
  description = "A discord bot";
  inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
  inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils, haskellNix }:
    flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
      let
        overlays = [ haskellNix.overlay (final: prev: {
          # This overlay adds our project to pkgs
          shinobu-bot = final.haskell-nix.project {
            src = ./.;
            compiler-nix-name = "ghc901";
            projectFileName = "stack.yaml";
            # https://github.com/input-output-hk/haskell.nix/issues/1177
            modules = [{
              nonReinstallablePkgs = [
                "rts" "ghc-heap" "ghc-prim" "integer-gmp" "integer-simple" "base"
                "deepseq" "array" "ghc-boot-th" "pretty" "template-haskell"
                # ghcjs custom packages
                "ghcjs-prim" "ghcjs-th"
                "ghc-bignum" "exceptions" "stm"
                "ghc-boot"
                "ghc" "Cabal" "Win32" "array" "binary" "bytestring" "containers"
                "directory" "filepath" "ghc-boot" "ghc-compact" "ghc-prim"
                # "ghci" "haskeline"
                "hpc"
                "mtl" "parsec" "process" "text" "time" "transformers"
                "unix" "xhtml" "terminfo"
              ];
            }];
          };
        })];
        pkgs = import nixpkgs { inherit system overlays; };
        flake = pkgs.shinobu-bot.flake {};
      in flake // {
        defaultPackage = flake.packages."shinobu-bot:exe:shinobu-bot";
      }
    );
}

Full stack trace (the new nix traces are quite verbose...):

trace: To make project.stack-nix for haskell-project a fixed-output derivation but not materialized, set `stack-sha256` to the output of the 'calculateMaterializedSha' script in 'passthru'.
trace: To materialize project.stack-nix for haskell-project entirely, pass a writable path as the `materialized` argument and run the 'updateMaterialized' script in 'passthru'.
trace: WARNING: `cleanSourceWith` called on /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source without a `name`. Consider adding `name = "3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source";`
trace: To make project.stack-nix for haskell-project a fixed-output derivation but not materialized, set `stack-sha256` to the output of the 'calculateMaterializedSha' script in 'passthru'.
trace: To materialize project.stack-nix for haskell-project entirely, pass a writable path as the `materialized` argument and run the 'updateMaterialized' script in 'passthru'.
trace: WARNING: `cleanSourceWith` called on /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source without a `name`. Consider adding `name = "3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source";`
trace: WARNING: 8.8.2 is out of date, consider using 8.8.4.
error: attribute 'alex' missing

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:570:34:

          569|                             then components.library
          570|                             else components.${haskellLib.prefixComponent.${builtins.elemAt m 0}}.${builtins.elemAt m 1};
             |                                  ^
          571|

       … while evaluating the attribute 'exes.alex'

       … while evaluating 'getComponent'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:563:38:

          562|                       # Look up a component in the package based on ctype:name
          563|                       getComponent = componentName:
             |                                      ^
          564|                         let m = builtins.match "(lib|flib|exe|test|bench):([^:]*)" componentName;

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/tools.nix:64:7:

           63|     in
           64|       (final.haskell-nix.hackage-package
             |       ^
           65|         ( # Disable benchmarks and tests by default (since we only want the exe component)

       … while evaluating 'hackage-tool'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/tools.nix:60:18:

           59|
           60|   hackage-tool = { name, ... }@args':
             |                  ^
           61|     let

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/tools.nix:76:7:

           75|     in
           76|       (if final.haskell-nix.custom-tools ? "${name}"
             |       ^
           77|           && final.haskell-nix.custom-tools."${name}" ? "${args.version}"

       … while evaluating 'tool'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/tools.nix:71:35:

           70|
           71|   tool = compiler-nix-name: name: versionOrArgs:
             |                                   ^
           72|     let

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/bootstrap.nix:838:31:

          837|             # infinite recursion).
          838|             alex-tool = args: tool buildBootstrapper.compilerNixName "alex" ({
             |                               ^
          839|                 version = "3.2.4";

       … while evaluating 'alex-tool'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/bootstrap.nix:838:25:

          837|             # infinite recursion).
          838|             alex-tool = args: tool buildBootstrapper.compilerNixName "alex" ({
             |                         ^
          839|                 version = "3.2.4";

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/bootstrap.nix:844:30:

          843|             alex = bootstrap.packages.alex-tool {};
          844|             alex-unchecked = bootstrap.packages.alex-tool { checkMaterialization = false; };
             |                              ^
          845|             happy-tool = { version ? "1.19.12", ... }@args: tool buildBootstrapper.compilerNixName "happy" ({

       … while evaluating the attribute 'haskell-nix.bootstrap.packages.alex-unchecked'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/bootstrap.nix:844:13:

          843|             alex = bootstrap.packages.alex-tool {};
          844|             alex-unchecked = bootstrap.packages.alex-tool { checkMaterialization = false; };
             |             ^
          845|             happy-tool = { version ? "1.19.12", ... }@args: tool buildBootstrapper.compilerNixName "happy" ({

       … while evaluating the attribute 'alex'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/bootstrap.nix:58:17:

           57|                 ghc = final.buildPackages.buildPackages.haskell-nix.bootstrap.compiler."${buildBootstrapper.compilerNixName}";
           58|                 alex = final.haskell-nix.bootstrap.packages.alex-unchecked;
             |                 ^
           59|                 happy = final.haskell-nix.bootstrap.packages.happy-unchecked;

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:143:17:

          142|           (map (drv: drv.__spliced.buildBuild or drv) depsBuildBuild)
          143|           (map (drv: drv.nativeDrv or drv) nativeBuildInputs
             |                 ^
          144|              ++ lib.optional separateDebugInfo' ../../build-support/setup-hooks/separate-debug-info.sh

       … from call site

       … while evaluating 'getOutput'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:486:23:

          485|   */
          486|   getOutput = output: pkg:
             |                       ^
          487|     if pkg.outputUnspecified or false

       … from call site

       … while evaluating the attribute 'nativeBuildInputs' of the derivation 'ghc-8.6.5'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:447:38:

          446|   recursiveUpdate = lhs: rhs:
          447|     recursiveUpdateUntil (path: lhs: rhs:
             |                                      ^
          448|       !(isAttrs lhs && isAttrs rhs)

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:420:12:

          419|         if tail values == []
          420|         || pred here (head (tail values)) (head values) then
             |            ^
          421|           head values

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:417:24:

          416|     let f = attrPath:
          417|       zipAttrsWith (n: values:
             |                        ^
          418|         let here = attrPath ++ [n]; in

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:366:15:

          365|       inherit name;
          366|       value = f name (catAttrs name sets);
             |               ^
          367|     }) names);

       … while evaluating the attribute 'nativeBuildInputs' of the derivation 'ghc-8.10.5'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:447:38:

          446|   recursiveUpdate = lhs: rhs:
          447|     recursiveUpdateUntil (path: lhs: rhs:
             |                                      ^
          448|       !(isAttrs lhs && isAttrs rhs)

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:420:12:

          419|         if tail values == []
          420|         || pred here (head (tail values)) (head values) then
             |            ^
          421|           head values

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:417:24:

          416|     let f = attrPath:
          417|       zipAttrsWith (n: values:
             |                        ^
          418|         let here = attrPath ++ [n]; in

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:366:15:

          365|       inherit name;
          366|       value = f name (catAttrs name sets);
             |               ^
          367|     }) names);

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:447:38:

          446|   recursiveUpdate = lhs: rhs:
          447|     recursiveUpdateUntil (path: lhs: rhs:
             |                                      ^
          448|       !(isAttrs lhs && isAttrs rhs)

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:420:12:

          419|         if tail values == []
          420|         || pred here (head (tail values)) (head values) then
             |            ^
          421|           head values

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:417:24:

          416|     let f = attrPath:
          417|       zipAttrsWith (n: values:
             |                        ^
          418|         let here = attrPath ++ [n]; in

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:366:15:

          365|       inherit name;
          366|       value = f name (catAttrs name sets);
             |               ^
          367|     }) names);

       … while evaluating the attribute 'buildCommand' of the derivation 'default-Setup-setup-config'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating the attribute 'buildPhase' of the derivation 'default-Setup-setup'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating the attribute 'SETUP_HS' of the derivation 'nix-tools-exe-cabal-to-nix-0.1.0.0'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating the attribute 'paths' of the derivation 'nix-tools'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating the attribute 'buildInputs' of the derivation 'stack-repos'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating anonymous lambda

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/lib/stack-cache-generator.nix:4:1:

            3| { pkgs, haskellLib }:
            4| { src
             | ^
            5| , stackYaml    ? "stack.yaml"

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:776:34:

          775|                   // final.lib.optionalAttrs (args.cache == null) { inherit cache; });
          776|                 generatedCache = genStackCache args;
             |                                  ^
          777|                 cache = if args.cache != null then args.cache else generatedCache;

       … while evaluating 'optionalString'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/strings.nix:202:5:

          201|     # String to return if condition is true
          202|     string: if cond then string else "";
             |     ^
          203|

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/lib/call-stack-to-nix.nix:81:7:

           80|     ''}
           81|     ${pkgs.lib.optionalString (cache != null) ''
             |       ^
           82|       cp ${mkCacheFile cache}/.stack-to-nix.cache* $out${subDir'}

       … while evaluating the attribute 'buildCommand' of the derivation 'haskell-project-stack-to-nix-pkgs'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/pkgs/stdenv/generic/make-derivation.nix:201:11:

          200|         // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          201|           name =
             |           ^
          202|             let

       … while evaluating anonymous lambda

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/lib/import-and-filter-project.nix:5:1:

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

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:779:32:

          778|             in let pkg-set = mkStackPkgSet
          779|                 { stack-pkgs = importAndFilterProject callProjectResults;
             |                                ^
          780|                   pkg-def-extras = (args.pkg-def-extras or []);

       … while evaluating 'imap1'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/lists.nix:116:14:

          115|   */
          116|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |              ^
          117|

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:228:73:

          227|           };
          228|         in parentFile: parentKey: initialModules: args: collectResults (imap1 (n: x:
             |                                                                         ^
          229|           let

       … while evaluating 'filterModules'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:243:36:

          242|       # modules recursively. It returns the final list of unique-by-key modules
          243|       filterModules = modulesPath: { disabled, modules }:
             |                                    ^
          244|         let

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:254:7:

          253|     in modulesPath: initialModules: args:
          254|       filterModules modulesPath (collectStructuredModules unknownModule "" initialModules args);
             |       ^
          255|

       … while evaluating anonymous lambda

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:253:37:

          252|
          253|     in modulesPath: initialModules: args:
             |                                     ^
          254|       filterModules modulesPath (collectStructuredModules unknownModule "" initialModules args);

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:128:25:

          127|       merged =
          128|         let collected = collectModules
             |                         ^
          129|           (specialArgs.modulesPath or "")

       … while evaluating 'reverseList'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/lists.nix:393:17:

          392|   */
          393|   reverseList = xs:
             |                 ^
          394|     let l = length xs; in genList (n: elemAt xs (l - n - 1)) l;

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:132:33:

          131|           ({ inherit lib options config specialArgs; } // specialArgs);
          132|         in mergeModules prefix (reverseList collected);
             |                                 ^
          133|

       … while evaluating 'byName'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:364:25:

          363|       */
          364|       byName = attr: f: modules:
             |                         ^
          365|         foldl' (acc: module:

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:383:21:

          382|       # an attrset 'name' => list of submodules that declare ‘name’.
          383|       declsByName = byName "options" (module: option:
             |                     ^
          384|           [{ inherit (module) _file; options = option; }]

       … while evaluating 'flip'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/trivial.nix:138:16:

          137|   */
          138|   flip = f: a: b: f b a;
             |                ^
          139|

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:395:23:

          394|
          395|       resultsByName = flip mapAttrs declsByName (name: decls:
             |                       ^
          396|         # We're descending into attribute ‘name’.

       … while evaluating the attribute 'matchedOptions'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:427:14:

          426|     in {
          427|       inherit matchedOptions;
             |              ^
          428|

       … while evaluating 'recurse'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:295:23:

          294|     let
          295|       recurse = path: set:
             |                       ^
          296|         let

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:303:8:

          302|         in mapAttrs g set;
          303|     in recurse [] set;
             |        ^
          304|

       … while evaluating 'mapAttrsRecursiveCond'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/attrsets.nix:293:36:

          292|   */
          293|   mapAttrsRecursiveCond = cond: f: set:
             |                                    ^
          294|     let

       … from call site

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:140:28:

          139|           # For definitions that have an associated option
          140|           declaredConfig = mapAttrsRecursiveCond (v: ! isOption v) (_: v: v.value) options;
             |                            ^
          141|

       … while evaluating 'evalModules'

       at /nix/store/vdh6zx2ri3sl6xb5cv2crg90s8821ysf-source/lib/modules.nix:63:17:

           62|      evalModules) and the less declarative the module set is. */
           63|   evalModules = { modules
             |                 ^
           64|                 , prefix ? []

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/package-set.nix:3:4:

            2|   buildModules = f { inherit hackage pkg-def pkg-def-extras modules; pkgs = pkgs.buildPackages; };
            3| in pkgs.lib.evalModules {
             |    ^
            4|   modules = modules ++ [

       … while evaluating 'f'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/package-set.nix:1:9:

            1| let f = { hackage, pkgs, pkg-def, pkg-def-extras ? [], modules ? [] }: let
             |         ^
            2|   buildModules = f { inherit hackage pkg-def pkg-def-extras modules; pkgs = pkgs.buildPackages; };

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:93:13:

           92|
           93|             import ../package-set.nix {
             |             ^
           94|                 inherit (args) pkg-def pkg-def-extras;

       … while evaluating 'mkPkgSet'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:83:13:

           82|         mkPkgSet =
           83|             { pkg-def  # Base package set. Either from stackage (via stack-to-nix) or from a cabal projects plan file (via plan-to-nix)
             |             ^
           84|             , pkg-def-extras ? [] # Additional packages to augment the Base package set `pkg-def` with.

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:137:16:

          136|                 removeSpecialPackages = ps: removeAttrs ps [ "$locals" "$targets" "$everything" ];
          137|             in mkPkgSet {
             |                ^
          138|                 pkg-def = excludeBootPackages null pkg-def;

       … while evaluating 'mkStackPkgSet'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:119:13:

          118|         mkStackPkgSet =
          119|             { stack-pkgs  # Path to the output of stack-to-nix
             |             ^
          120|             , pkg-def-extras ? []

       … from call site

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:778:30:

          777|                 cache = if args.cache != null then args.cache else generatedCache;
          778|             in let pkg-set = mkStackPkgSet
             |                              ^
          779|                 { stack-pkgs = importAndFilterProject callProjectResults;

       … while evaluating the attribute 'hsPkgs'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:789:43:

          788|                 project = addProjectAndPackageAttrs {
          789|                   inherit (pkg-set.config) hsPkgs;
             |                                           ^
          790|                   inherit pkg-set;

       … while evaluating the attribute 'hsPkgs'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:549:15:

          548|               # Haskell packages
          549|               hsPkgs = final.lib.mapAttrs (packageName: package':
             |               ^
          550|                 if package' == null

       … while evaluating 'project'

       at /nix/store/lax26q1iblp3bdz9f0dznmkp3rickc92-source/overlays/haskell.nix:852:19:

          851|         # for `cabalPackage` and `stackPackage`.
          852|         project = args: let p = project' args;
             |                   ^
          853|           in p.hsPkgs // p;

       … from call site

       at /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source/flake.nix:12:25:

           11|           # This overlay adds our project to pkgs
           12|           shinobu-bot = final.haskell-nix.project {
             |                         ^
           13|             src = ./.;

       … while evaluating the attribute 'shinobu-bot.flake'

       at /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source/flake.nix:12:11:

           11|           # This overlay adds our project to pkgs
           12|           shinobu-bot = final.haskell-nix.project {
             |           ^
           13|             src = ./.;

       … while evaluating anonymous lambda

       at /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source/flake.nix:8:68:

            7|   outputs = { self, nixpkgs, flake-utils, haskellNix }:
            8|     flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
             |                                                                    ^
            9|       let

       … from call site

       at /nix/store/spivsakbmq8vb5mn9sj1n6m77y6yc5ky-source/default.nix:69:17:

           68|         let
           69|           ret = f system;
             |                 ^
           70|           op = attrs: key:

       … while evaluating 'op'

       at /nix/store/spivsakbmq8vb5mn9sj1n6m77y6yc5ky-source/default.nix:67:19:

           66|     let
           67|       op = attrs: system:
             |                   ^
           68|         let

       … from call site

       at /nix/store/spivsakbmq8vb5mn9sj1n6m77y6yc5ky-source/default.nix:79:5:

           78|     in
           79|     builtins.foldl' op { } systems
             |     ^
           80|   ;

       … while evaluating 'eachSystem'

       at /nix/store/spivsakbmq8vb5mn9sj1n6m77y6yc5ky-source/default.nix:65:25:

           64|   #
           65|   eachSystem = systems: f:
             |                         ^
           66|     let

       … from call site

       at /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source/flake.nix:8:5:

            7|   outputs = { self, nixpkgs, flake-utils, haskellNix }:
            8|     flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
             |     ^
            9|       let

       … while evaluating 'outputs'

       at /nix/store/3f86zll1s0a2mjwa5m0b6rr4qp6zknj5-source/flake.nix:7:13:

            6|
            7|   outputs = { self, nixpkgs, flake-utils, haskellNix }:
             |             ^
            8|     flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:

       … from call site

       at «string»:45:21:

           44|
           45|           outputs = flake.outputs (inputs // { self = result; });
             |                     ^
           46|

       … while evaluating anonymous lambda

       at «string»:10:13:

            9|     builtins.mapAttrs
           10|       (key: node:
             |             ^
           11|         let

       … from call site

       … while evaluating the attribute 'root'

       … while evaluating anonymous lambda

       at «string»:2:23:

            1|
            2| lockFileStr: rootSrc: rootSubdir:
             |                       ^
            3|

       … from call site

[funketh]

A more minimal example with the same error on aarch64:

{
  inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
  inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils, haskellNix }:
    flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
      let
        overlays = [ haskellNix.overlay (final: prev: {
          myalex = final.haskell-nix.tool "ghc901" "alex" "3.2.6";
        })];
        pkgs = import nixpkgs { inherit system overlays; };
      in { defaultPackage = pkgs.myalex; }
    );
}

[funketh]

I get the same error using ghc8104 so this seems unrelated to ghc 9?

[TravisWhitaker]

Give this patch a spin: https://github.com/input-output-hk/haskell.nix/pull/1168

[funketh]

I'm getting a network error. Am I doing something wrong? I just changed the haskellNix input url to your branch.

error checking the existence of http://tarballs.nixos.org/sha256/1x2pfj9mnxac9rfki96bwwlmgi8ns0s7mhp99jmxkdm8726npdml:
curl: (6) Could not resolve host: tarballs.nixos.org

trying https://haskell.org/ghc/dist/8.8.2/ghc-8.8.2-aarch64-deb9-linux.tar.xz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
^M  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: haskell.org
Warning: Problem : timeout. Will retry in 1 seconds. 3 retries left.
^M  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: haskell.org
Warning: Problem : timeout. Will retry in 2 seconds. 2 retries left.
^M  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: haskell.org
Warning: Problem : timeout. Will retry in 4 seconds. 1 retries left.
^M  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: haskell.org
error: cannot download ghc-8.8.2-aarch64-deb9-linux.tar.xz from any mirror

[TravisWhitaker]

curl: (6) Could not resolve host: haskell.org

Looks like it might be flakiness from wherever you're getting DNS?

[TravisWhitaker]

This is a separate issue from the one addressed in #1168 anyway, and was actually caused by #1166 (https://github.com/input-output-hk/haskell.nix/issues/1207)

[stale[bot]]

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.