lix: lix requires nix to build

[eclairevoyant]

Nixpkgs version

• Unstable (25.05)

Describe the bug

lix depends on nix. More specifically, an overlay that attempts to replace nix with lix fails due to infrec.

Steps to reproduce

Run the following in a local clone of nixpkgs:

$ nix-build --expr 'let pkgs = (import ./. { overlays = [(f: _: { nix = f.lix; })]; }); in pkgs.lix.out'
trace: evaluation warning: undeclared Nixpkgs option set: config.allowUnfreePredicate
error:
       … while evaluating 'strict' to select 'drvPath' on it
         at /builtin/derivation.nix:1:552:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       (stack trace truncated; use '--show-trace' to show the full trace)

       error: infinite recursion encountered

Alternatively, replace ./. with <nixpkgs>, assuming you're on the current nixos-unstable (3a22805).

Expected behaviour

lix should be, IMO, buildable independently of nix.

Additional context

The path of dependencies is essentially lix → lix.doc → fetchCargoVendor → nix-prefetch-git → nix

See full trace below ⤵

trace: evaluation warning: undeclared Nixpkgs option set: config.allowUnfreePredicate
error:
       … while evaluating 'strict' to select 'drvPath' on it
         at /builtin/derivation.nix:1:552:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       … while evaluating derivation 'lix-2.91.1'
         whose name attribute is located at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'buildInputs' of derivation 'lix-2.91.1'
         at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:422:7:
          421|       depsHostHost                = elemAt (elemAt dependencies 1) 0;
          422|       buildInputs                 = elemAt (elemAt dependencies 1) 1;
             |       ^
          423|       depsTargetTarget            = elemAt (elemAt dependencies 2) 0;

       … while calling the 'getAttr' builtin
         at /builtin/derivation.nix:1:500:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       … while evaluating derivation 'lix-doc-2.91.1'
         whose name attribute is located at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'cargoDeps' of derivation 'lix-doc-2.91.1'
         at /mnt/scratch/nixpkgs/pkgs/build-support/rust/build-rust-package/default.nix:138:5:
          137|   // {
          138|     cargoDeps = cargoDeps';
             |     ^
          139|     inherit buildAndTestSubdir;

       … while calling the 'getAttr' builtin
         at /builtin/derivation.nix:1:500:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       … while evaluating derivation 'lix-doc-2.91.1-vendor'
         whose name attribute is located at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'vendorStaging' of derivation 'lix-doc-2.91.1-vendor'
         at /mnt/scratch/nixpkgs/pkgs/build-support/rust/fetch-cargo-vendor.nix:94:13:
           93|   {
           94|     inherit vendorStaging;
             |             ^
           95|     nativeBuildInputs = [

       … while calling the 'getAttr' builtin
         at /builtin/derivation.nix:1:500:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       … while evaluating derivation 'lix-doc-2.91.1-vendor-staging'
         whose name attribute is located at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'nativeBuildInputs' of derivation 'lix-doc-2.91.1-vendor-staging'
         at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:419:7:
          418|       depsBuildBuild              = elemAt (elemAt dependencies 0) 0;
          419|       nativeBuildInputs           = elemAt (elemAt dependencies 0) 1;
             |       ^
          420|       depsBuildTarget             = elemAt (elemAt dependencies 0) 2;

       … while calling the 'getAttr' builtin
         at /builtin/derivation.nix:1:500:
       … while calling the 'derivationStrict' builtin
         at /builtin/derivation.nix:1:208:
       … while evaluating derivation 'nix-prefetch-git'
         whose name attribute is located at /mnt/scratch/nixpkgs/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'installPhase' of derivation 'nix-prefetch-git'
         at /mnt/scratch/nixpkgs/pkgs/tools/package-management/nix-prefetch-scripts/default.nix:15:5:
           14|
           15|     installPhase = ''
             |     ^
           16|       install -vD ${src} $out/bin/$name;

       … from call site
         at /mnt/scratch/nixpkgs/pkgs/tools/package-management/nix-prefetch-scripts/default.nix:18:27:
           17|       wrapProgram $out/bin/$name \
           18|         --prefix PATH : ${lib.makeBinPath (deps ++ [ coreutils gnused nix ])} \
             |                           ^
           19|         --set HOME /homeless-shelter

       … while calling 'makeSearchPathOutput'
         at /mnt/scratch/nixpkgs/lib/strings.nix:548:5:
          547|     subDir:
          548|     pkgs: makeSearchPath subDir (map (lib.getOutput output) pkgs);
             |     ^
          549|

       … from call site
         at /mnt/scratch/nixpkgs/lib/strings.nix:548:11:
          547|     subDir:
          548|     pkgs: makeSearchPath subDir (map (lib.getOutput output) pkgs);
             |           ^
          549|

       … while calling 'makeSearchPath'
         at /mnt/scratch/nixpkgs/lib/strings.nix:506:5:
          505|     subDir:
          506|     paths:
             |     ^
          507|     concatStringsSep ":" (map (path: path + "/" + subDir) (filter (x: x != null) paths));

       … while calling the 'concatStringsSep' builtin
         at /mnt/scratch/nixpkgs/lib/strings.nix:507:5:
          506|     paths:
          507|     concatStringsSep ":" (map (path: path + "/" + subDir) (filter (x: x != null) paths));
             |     ^
          508|

       … while calling anonymous lambda
         at /mnt/scratch/nixpkgs/lib/strings.nix:507:32:
          506|     paths:
          507|     concatStringsSep ":" (map (path: path + "/" + subDir) (filter (x: x != null) paths));
             |                                ^
          508|

       … while calling the 'getAttr' builtin
         at /builtin/derivation.nix:1:500:
       error: infinite recursion encountered

System metadata

Attempted to build on current master (b29c6f5)

Notify maintainers

@alyssais re: #377518
@RaitoBezarius @Qyriad as maintainers

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