Updating a flake will fail to load if it is in a subdirectory of a repository and depends on stuff above the flake.nix

[lf-]

This is due to NixOS/nix#6767, where builtins.getFlake doesn't work on subdirectories.

The solution here, I think, is to use the top level of the repository with ?dir=blah/blah.

Output:

configs/nix » nix-update -F packages.x86_64-linux.jellyfin-plugin-sso                                                                                                                                                       main
$ nix eval --json --impure --expr
let

  inherit (builtins) getFlake stringLength substring;
  currentSystem = builtins.currentSystem;
  flake = getFlake "/home/jade/.dotfiles/configs/nix";
  pkg = flake.packages.${currentSystem}."packages"."x86_64-linux"."jellyfin-plugin-sso" or flake."packages"."x86_64-linux"."jellyfin-plugin-sso";
  inherit (flake) outPath;
  outPathLen = stringLength outPath;
  sanitizePosition = { file, ... }@pos:
    assert substring 0 outPathLen file != outPath
      -> throw "${file} is not in ${outPath}";
    pos // { file = "/home/jade/.dotfiles/configs/nix" + substring outPathLen (stringLength file - outPathLen) file; };

  raw_version_position = sanitizePosition (builtins.unsafeGetAttrPos "version" pkg);

  position = if pkg ? isRubyGem then
    raw_version_position
  else if pkg ? isPhpExtension then
    raw_version_position
   else
    sanitizePosition (builtins.unsafeGetAttrPos "src" pkg);
in {
  name = pkg.name;
  old_version = pkg.version or (builtins.parseDrvName pkg.name).version;
  inherit raw_version_position;
  filename = position.file;
  line = position.line;
  urls = pkg.src.urls or null;
  url = pkg.src.url or null;
  rev = pkg.src.rev or null;
  hash = pkg.src.outputHash or null;
  go_modules = pkg.goModules.outputHash or null;
  go_modules_old = pkg.go-modules.outputHash or null;
  cargo_deps = pkg.cargoDeps.outputHash or null;
  raw_cargo_lock =
    if pkg ? cargoDeps.lockFile then
      let
        inherit (pkg.cargoDeps) lockFile;
        res = builtins.tryEval (sanitizePosition {
          file = toString lockFile;
        });
      in
      if res.success then res.value.file else false
    else
      null;
  npm_deps = pkg.npmDeps.outputHash or null;
  yarn_deps = pkg.offlineCache.outputHash or null;
  tests = builtins.attrNames (pkg.passthru.tests or {});
  has_update_script = false;
  src_homepage = pkg.src.meta.homepage or null;
  changelog = pkg.meta.changelog or null;
} --extra-experimental-features flakes nix-command
error:
       … while evaluating attribute 'cargo_deps'

         at «string»:35:3:

           34|   go_modules_old = pkg.go-modules.outputHash or null;
           35|   cargo_deps = pkg.cargoDeps.outputHash or null;
             |   ^
           36|   raw_cargo_lock =

       … while evaluating the attribute 'packages.x86_64-linux.packages.x86_64-linux.jellyfin-plugin-sso'

         at /nix/store/kv5iqddpycxr6ydknp30qfdsl4a8zsr5-source/flake.nix:129:7:

          128|
          129|       packages.x86_64-linux =
             |       ^
          130|         let

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: getting status of '/nix/programs/hsutils/overlay.nix': No such file or directory
Traceback (most recent call last):
  File "/nix/store/yq22dg22s0f21jfqzi26937z96w749pr-nix-update-1.0.0/bin/.nix-update-wrapped", line 9, in <module>
    sys.exit(main())
             ^^^^^^
  File "/nix/store/yq22dg22s0f21jfqzi26937z96w749pr-nix-update-1.0.0/lib/python3.11/site-packages/nix_update/__init__.py", line 287, in main
    package = update(options)
              ^^^^^^^^^^^^^^^
  File "/nix/store/yq22dg22s0f21jfqzi26937z96w749pr-nix-update-1.0.0/lib/python3.11/site-packages/nix_update/update.py", line 322, in update
    package = eval_attr(opts)
              ^^^^^^^^^^^^^^^
  File "/nix/store/yq22dg22s0f21jfqzi26937z96w749pr-nix-update-1.0.0/lib/python3.11/site-packages/nix_update/eval.py", line 181, in eval_attr
    res = run(cmd)
          ^^^^^^^^
  File "/nix/store/yq22dg22s0f21jfqzi26937z96w749pr-nix-update-1.0.0/lib/python3.11/site-packages/nix_update/utils.py", line 37, in run
    return subprocess.run(
           ^^^^^^^^^^^^^^^
  File "/nix/store/y027d3bvlaizbri04c1bzh28hqd6lj01-python3-3.11.7/lib/python3.11/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['nix', 'eval', '--json', '--impure', '--expr', '\nlet\n  \n  inherit (builtins) getFlake stringLength substring;\n  currentSystem = builtins.currentSystem;\n  flake = getFlake "/home/jade/.dotfiles/configs/nix";\n  pkg = flake.packages.${currentSystem}."packages"."x86_64-linux"."jellyfin-plugin-sso" or flake."packages"."x86_64-linux"."jellyfin-plugin-sso";\n  inherit (flake) outPath;\n  outPathLen = stringLength outPath;\n  sanitizePosition = { file, ... }@pos:\n    assert substring 0 outPathLen file != outPath\n      -> throw "${file} is not in ${outPath}";\n    pos // { file = "/home/jade/.dotfiles/configs/nix" + substring outPathLen (stringLength file - outPathLen) file; };\n\n  raw_version_position = sanitizePosition (builtins.unsafeGetAttrPos "version" pkg);\n\n  position = if pkg ? isRubyGem then\n    raw_version_position\n  else if pkg ? isPhpExtension then\n    raw_version_position\n   else\n    sanitizePosition (builtins.unsafeGetAttrPos "src" pkg);\nin {\n  name = pkg.name;\n  old_version = pkg.version or (builtins.parseDrvName pkg.name).version;\n  inherit raw_version_position;\n  filename = position.file;\n  line = position.line;\n  urls = pkg.src.urls or null;\n  url = pkg.src.url or null;\n  rev = pkg.src.rev or null;\n  hash = pkg.src.outputHash or null;\n  go_modules = pkg.goModules.outputHash or null;\n  go_modules_old = pkg.go-modules.outputHash or null;\n  cargo_deps = pkg.cargoDeps.outputHash or null;\n  raw_cargo_lock =\n    if pkg ? cargoDeps.lockFile then\n      let\n        inherit (pkg.cargoDeps) lockFile;\n        res = builtins.tryEval (sanitizePosition {\n          file = toString lockFile;\n        });\n      in\n      if res.success then res.value.file else false\n    else\n      null;\n  npm_deps = pkg.npmDeps.outputHash or null;\n  yarn_deps = pkg.offlineCache.outputHash or null;\n  tests = builtins.attrNames (pkg.passthru.tests or {});\n  has_update_script = false;\n  src_homepage = pkg.src.meta.homepage or null;\n  changelog = pkg.meta.changelog or null;\n}', '--extra-experimental-features', 'flakes nix-command']' returned non-zero exit status 1.