Error trying to start shell "error: value is null while a set was expected"

[pfgray]

Hello!

Thank you for this project! I'm trying to build my app with it, but I'm running into an issue, and not sure how to fix it.

I've run:

nix flake init -t github:sagittaros/ruby-nix/main
nix develop
> bundix # which generated gemset.nix
> exit
git add gemset.nix
nix develop

And that's when I get:

error: value is null while a set was expected

Running it with trace shows:

error: value is null while a set was expected

       … while evaluating the attribute 'name'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/development/ruby-modules/gem/default.nix:103:3:

          102|   #name = builtins.trace (attrs.name or "no attr.name" ) "${namePrefix}${gemName}-${version}";
          103|   name = attrs.name or "${namePrefix}${gemName}-${version}";
             |   ^
          104|

       … while evaluating anonymous lambda

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/lib/strings.nix:1094:3:

         1093|   in
         1094|   string:
             |   ^
         1095|   # First detect the common case of already valid strings, to speed those up

       … from call site

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:321:9:

          320|         in
          321|         lib.strings.sanitizeDerivationName (
             |         ^
          322|           if attrs ? name

       … while evaluating the derivation attribute 'name'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

       … while evaluating the attribute 'gemPath' of the derivation 'ruby3.2.2-activesupport-7.0.4'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

       … while evaluating the attribute 'gemPath' of the derivation 'ruby3.2.2-actionview-7.0.4'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

       … while evaluating the attribute 'passAsFile'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/build-support/buildenv/default.nix:77:5:

           76|     # XXX: The size is somewhat arbitrary
           77|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |     ^
           78|   }

       … while evaluating the attribute 'passAsFile' of the derivation 'my-rails-app-ruby-env'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

       … while evaluating the attribute 'passAsFile'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/build-support/buildenv/default.nix:77:5:

           76|     # XXX: The size is somewhat arbitrary
           77|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |     ^
           78|   }

       … while evaluating the attribute 'passAsFile' of the derivation 'my-rails-app'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

       … while evaluating the attribute 'buildInputs' of the derivation 'nix-shell'

       at /nix/store/bkvc2q8pdbn09jb9x7ihs1vvbl6nf6rw-source/pkgs/stdenv/generic/make-derivation.nix:303:7:

          302|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          303|       name =
             |       ^
          304|         let

Following the trace, it seems to be some kind of issue generating the derivation for activesupport? But I'm not sure 🤔 .

Here's my gemset.nix, and nothing looks out of the ordinary:

{
  actionview = {
    dependencies = ["activesupport" "builder" "erubi" "rails-dom-testing" "rails-html-sanitizer"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "06zxdzxgrb0a9p61p41nz5jlrq01cspd6kq621i9hk1h96sj5rj5";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "7.0.4";
  };
  activesupport = {
    dependencies = ["concurrent-ruby" "i18n" "minitest" "tzinfo"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "183az13i4fsm28d0l5xhbjpmcj3l1lxzcxlx8pi8zrbd933jwqd0";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "7.0.4";
  };
  ast = {
    source = null;
    targets = [];
  };
  builder = {
    source = null;
    targets = [];
  };
  byebug = {
    source = null;
    targets = [];
  };
  cli-ui = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1aghiy4qrh6y6q421lcpal81c98zypj8jki4wymqnc8vjvqsyiv4";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.5.1";
  };
  coderay = {
    source = null;
    targets = [];
  };
  concurrent-ruby = {
    source = null;
    targets = [];
  };
  crass = {
    source = null;
    targets = [];
  };
  diff-lcs = {
    source = null;
    targets = [];
  };
  erubi = {
    source = null;
    targets = [];
  };
  ffi = {
    source = null;
    targets = [];
  };
  gem-release = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "108rrfaiayi14zrqbb6z0cbwcxh8n15am5ry2a86v7c8c3niysq9";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.2.2";
  };
  i18n = {
    dependencies = ["concurrent-ruby"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1vdcchz7jli1p0gnc669a7bj3q1fv09y9ppf0y3k0vb1jwdwrqwi";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.12.0";
  };
  inst = {
    dependencies = ["actionview" "activesupport" "cli-ui" "thor" "zeitwerk"];
    groups = ["default"];
    platforms = [];
    source = {
      path = ".";
      type = "path";
    };
    targets = [];
    version = "0.4.0";
  };
  json = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0nalhin1gda4v8ybk6lq8f407cgfrj6qzn234yra4ipkmlbfmal6";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.6.3";
  };
  listen = {
    dependencies = ["rb-fsevent" "rb-inotify"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "13rgkfar8pp31z1aamxf5y7cfq88wv6rxxcwy7cmm177qq508ycn";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.8.0";
  };
  loofah = {
    dependencies = ["crass" "nokogiri"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1fpyk1965py77al7iadkn5dibwgvybknkr7r8bii2dj73wvr29rh";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.19.0";
  };
  method_source = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1pviwzvdqd90gn6y7illcdd9adapw8fczml933p5vl739dkvl3lq";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.9.2";
  };
  minitest = {
    source = null;
    targets = [];
  };
  minitest-documentation = {
    dependencies = ["minitest"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "11zb2di8mw22zvdnq9p6lj9icig3dxz89dkfkcyb7yhijxr56p8n";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.0.0";
  };
  nokogiri = {
    dependencies = ["racc"];
    groups = ["default"];
    platforms = [];
    source = null;
    targets = [{
      remotes = ["https://rubygems.org"];
      sha256 = "0mj9fs2z93lvv2cz2z46hiczny86ifgjhh8m5lmwf0ifgd5vnvp7";
      target = "arm64-darwin";
      targetCPU = "arm64";
      targetOS = "darwin";
      type = "gem";
    } {
      remotes = ["https://rubygems.org"];
      sha256 = "15fpz7azgcq1zpd679fgx1njq220zxlcfjz91wfgjgw08qb0x0q1";
      target = "x86_64-darwin";
      targetCPU = "x86_64";
      targetOS = "darwin";
      type = "gem";
    }];
    version = "1.13.9";
  };
  parallel = {
    source = null;
    targets = [];
  };
  parser = {
    dependencies = ["ast"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "17qfhjvnr9q2gp1gfdl6kndy2mb6qdwsls3vnjhb1h8ddimdm4s5";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.1.3.0";
  };
  pry = {
    dependencies = ["coderay" "method_source"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1mh312k3y94sj0pi160wpia0ps8f4kmzvm505i6bvwynfdh7v30g";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.11.3";
  };
  pry-byebug = {
    dependencies = ["byebug" "pry"];
    source = null;
    targets = [];
  };
  pry-doc = {
    dependencies = ["pry" "yard"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1pp43n69p6bjvc640wgcz295w1q2v9awcqgbwcqn082dbvq5xvnx";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.4.0";
  };
  pry-reload = {
    dependencies = ["listen"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1gld1454sd5xp2v4vihrhcjh4sgkx7m1kc29qx1nr96r4z2gm471";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.3";
  };
  pry-state = {
    dependencies = ["pry"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "12n5zk3bvwwqvmzc20l9n1pdxhkw9l3ayaqrhqlmnwhycv032nsi";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.1.10";
  };
  racc = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0p685i23lr8pl7l09g9l2mcj615fr7g33w3mkcr472lcg34nq8n8";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.6.1";
  };
  rails-dom-testing = {
    dependencies = ["activesupport" "nokogiri"];
    source = null;
    targets = [];
  };
  rails-html-sanitizer = {
    dependencies = ["loofah"];
    source = null;
    targets = [];
  };
  rainbow = {
    source = null;
    targets = [];
  };
  rake = {
    source = null;
    targets = [];
  };
  rb-fsevent = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1zmf31rnpm8553lqwibvv3kkx0v7majm1f341xbxc0bk5sbhp423";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.11.2";
  };
  rb-inotify = {
    dependencies = ["ffi"];
    source = null;
    targets = [];
  };
  regexp_parser = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0rj7xcg7bkfw6y0h4wg8y3s4nmks9qrzdxag4zaw41xjqfanlysf";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.6.1";
  };
  rexml = {
    source = null;
    targets = [];
  };
  rspec = {
    dependencies = ["rspec-core" "rspec-expectations" "rspec-mocks"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "171rc90vcgjl8p1bdrqa92ymrj8a87qf6w20x05xq29mljcigi6c";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.12.0";
  };
  rspec-core = {
    dependencies = ["rspec-support"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1ibb81slc35q5yp276sixp3yrvj9q92wlmi1glbnwlk6g49z8rn4";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.12.0";
  };
  rspec-expectations = {
    dependencies = ["diff-lcs" "rspec-support"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0qldsmjhqr4344zdlamzggr3y98wdk2c4hihkhwx8imk800gkl8v";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.12.0";
  };
  rspec-mocks = {
    dependencies = ["diff-lcs" "rspec-support"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1yvwnb0x5d6d4ff3wlgahk0wcw72ic51gd2snr1xxc5ify41kabv";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.12.0";
  };
  rspec-support = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "12y52zwwb3xr7h91dy9k3ndmyyhr3mjcayk0nnarnrzz8yr48kfx";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "3.12.0";
  };
  rubocop = {
    dependencies = ["json" "parallel" "parser" "rainbow" "regexp_parser" "rexml" "rubocop-ast" "ruby-progressbar" "unicode-display_width"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0ggxkq68ddxmynr2lyrvzr8qbrdvc2irxlx9ihxmvdpkg1vimr3w";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.39.0";
  };
  rubocop-ast = {
    dependencies = ["parser"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0sqkg84npyq9z4d3z46w59zyr1r1rbd1mrrlglws9ksw04wdq5x9";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "1.24.0";
  };
  ruby-progressbar = {
    source = null;
    targets = [];
  };
  thor = {
    source = null;
    targets = [];
  };
  tzinfo = {
    dependencies = ["concurrent-ruby"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0rx114mpqnw2k4h98vc0rs0x0bmf0img84yh8mkkjkal07cjydf5";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.0.5";
  };
  unicode-display_width = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0ra70s8prfacpqwj5v2mqn1rbfz6xds3n9nsr9cwzs3z2c0wm5j7";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "2.3.0";
  };
  webrick = {
    source = null;
    targets = [];
  };
  yard = {
    dependencies = ["webrick"];
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0p1if8g9ww6hlpfkphqv3y1z0rbqnnrvb38c5qhnala0f8qpw6yk";
      target = "ruby";
      type = "gem";
    };
    targets = [];
    version = "0.9.28";
  };
  zeitwerk = {
    source = null;
    targets = [];
  };
}

Sorry for the wall of text, and thanks in advance!

[inscapist]

Thanks for reporting this issue. It seems that there is an issue with bundix, which is why you are getting source = null; and targets = [];. Let me investigate and report back.

[inscapist]

@pfgray could you delete your gemset.nix and regenerate it with nix run github:sagittaros/bundix/ee07328?

Let me know if it works for you!

[pfgray]

Yes, that worked! Thanks a bunch!