Missing line numbers for anonymous functions in stacktrace

[joepie91]

There's a bug somewhere in my NixOps deployment specification, and this produced the following stacktrace:

$ nixops info -d osmium-testing --show-trace
error: while evaluating the attribute ‘config.deployment’ at /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/options.nix:117:41, called from /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/attrsets.nix:199:52:
while evaluating ‘scrubOptionValue’ at /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/options.nix:113:22, called from /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/options.nix:117:44:
while evaluating ‘isDerivation’ at /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/attrsets.nix:295:18, called from /nix/store/j1hb3za87443jwkf22nz5yyjy3mg935r-nixos-17.03.1482.1b57bf274a/nixos/lib/options.nix:114:8:
while evaluating the attribute ‘config’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/lib/eval-config.nix:53:5:
while evaluating the attribute ‘config’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:87:25:
while evaluating ‘yieldConfig’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:74:29, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:73:16:
while evaluating ‘mergeModules’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:178:26, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:64:17:
while evaluating ‘mergeModules'’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:182:36, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:179:5:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:218:9:
while evaluating ‘reverseList’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:256:17, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:64:38:
while evaluating ‘closeModules’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:91:27, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:59:16:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:71:28, called from undefined position:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:93:49, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:71:31:
while evaluating the module argument `pkgs' in ":anon-2:anon-1:anon-1":
infinite recursion encountered, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:151:28
warning: evaluation of the deployment specification failed; status info may be incorrect

Unfortunately, it appears the issue lies with the :anon-2:anon-1:anon-1 section (as there are no other local paths in the stacktrace), and no line number is listed for anonymous functions.

This is a UX problem that should probably be fixed; right now, I have no idea where to look for the error, and I don't immediately see a reason why anonymous functions couldn't include line numbers as well.

[stale]

I marked this as stale due to inactivity. → More info

[domenkozar]

I'm closing this as it was most probably fixed by adding a pos to a number of function calls.

Since it's not possible to reproduce the issue we can't ever be sure :)