Error message from output dependency cycles is unhelpful #551

New issue

Closed

opened 2024-10-15 22:27:56 +00:00 by jade · 2 comments

jade commented

2024-10-15 22:27:56 +00:00

Owner

The error:

error: cycle detected in build of '/nix/store/aksg7yap79slndh0s0bx5vr422vbzcr1-capnproto-1.0.2.drv' in the references of output 'bin' from output 'dev'

It is unhelpful since it does not list the file that contains the cycle or instructions for how to keep the failed outputs to diagnose them or other similarly helpful information.

The error: `error: cycle detected in build of '/nix/store/aksg7yap79slndh0s0bx5vr422vbzcr1-capnproto-1.0.2.drv' in the references of output 'bin' from output 'dev'` It is unhelpful since it does not list the file that contains the cycle or instructions for how to keep the failed outputs to diagnose them or other similarly helpful information.

jade added the

label

2024-10-15 22:27:56 +00:00

jade added this to the Error reporting project

2024-10-15 22:27:56 +00:00

lix-bot commented

2024-10-15 22:49:58 +00:00

Member

This issue was mentioned on Gerrit on the following CLs:

commit message in cl/2074 ("packaging: use in-tree capnproto derivation")
commit message in cl/3892 ("libstore/local-derivation-goal: show tree with references that lead to an output cycle")
commit message in cl/3888 ("libutil/topo-sort: return std::variant<std::vector, Cycle>")

This issue was mentioned on Gerrit on the following CLs: * commit message in [cl/2074](https://gerrit.lix.systems/c/lix/+/2074) ("packaging: use in-tree capnproto derivation") * commit message in [cl/3892](https://gerrit.lix.systems/c/lix/+/3892) ("libstore/local-derivation-goal: show tree with references that lead to an output cycle") * commit message in [cl/3888](https://gerrit.lix.systems/c/lix/+/3888) ("libutil/topo-sort: return std::variant<std::vector<T>, Cycle>")

lix-project referenced this issue from a commit

2024-10-18 23:51:11 +00:00

packaging: use in-tree capnproto derivation

ma27 self-assigned this

2025-08-03 12:53:35 +00:00

ma27 commented

2025-08-03 13:18:12 +00:00

Member

I have a shitty proof of concept locally that uses genGraphString, but that requires a bit more rework on some parts to make actually reasonable. Will try to submit a CL for this soonish.

❤️ 1 🎉 1

lix-project referenced this issue from a commit

2025-08-23 23:37:21 +00:00

libutil/topo-sort: return std::variant<std::vector<T>, Cycle>

lix-project referenced this issue from a commit

2025-08-23 23:37:21 +00:00

libstore/local-derivation-goal: show tree with references that lead to an output cycle

lix-project closed this issue

2025-08-23 23:37:21 +00:00