NixOS/hydra

Issues somebody may already be working on are listed last. List everything by date

• Feature: Download aggregate build logs for evaluation

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  Difficulty 5/5 Over a week Newbie friendliness 40/100

  NixOS/hydra#2029 · Opened Oct 29, 2026

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• [new HQR] Input resolution picks the wrong output path when buildstepoutputs has several rows named 'out' for one derivation

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  NixOS/hydra#2015 · Opened Oct 23, 2026

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• hydra-builder produces "successful" buildEnv outputs with missing contents (silent corruption)

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1999 · Opened Oct 18, 2026

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• Allow hydra to support garbage collect previous versions or unused builds

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  Difficulty 5/5 Over a week Newbie friendliness 30/100

  NixOS/hydra#1909 · Opened Sep 19, 2026

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• Socket activate the manual too

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  Difficulty 3/5 1-2 days Newbie friendliness 58/100

  NixOS/hydra#1905 · 2 comments · Opened Sep 15, 2026

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• Valid FOD hash rejected?

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  NixOS/hydra#1860 · Opened Aug 17, 2026

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• Queue-runner has jobs stuck connecting for hours

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  NixOS/hydra#1815 · Opened Jun 26, 2026

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• evaluation often gets stuck after succeeding (no other evals until restarting the service)

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1812 · 4 comments · Opened Jun 24, 2026

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• Continuous delivery for staging-hydra

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  NixOS/hydra#1808 · 1 comment · 1 reaction · Opened Jun 23, 2026

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• [new HQR] unexplained failures in various builds

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  NixOS/hydra#1806 · 2 comments · Opened Jun 19, 2026

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• [new HQR] queue builder uploaded to a wrong NAR path on S3

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  NixOS/hydra#1804 · 23 comments · 6 reactions · Opened Jun 18, 2026

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• Metrics that expose reached capacity limits of queue-builders

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  queue runner

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  NixOS/hydra#1799 · Opened Jun 17, 2026

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• Queue-builder should allow no supported-features

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  Difficulty 2/5 1-3 hours Newbie friendliness 72/100

  NixOS/hydra#1796 · 1 comment · Opened Jun 17, 2026

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• Intermitant test failures that I noticed

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  Difficulty 4/5 3-5 days Newbie friendliness 32/100

  NixOS/hydra#1649 · 2 comments · Opened Apr 7, 2026

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• hydra-queue-runner busy loops when postgres goes away

  May be free again @Conni2461 claimed this 222 days ago, and no pull request is open. Open

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  NixOS/hydra#1594 · 1 assignee · Opened Mar 24, 2026

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• Incorrect build number given to a dependency in `#tabs-build-deps` page

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1569 · Opened Feb 2, 2026

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• More GitHub notifications

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1563 · 3 reactions · Opened Jan 23, 2026

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• Pretty log and raw log don't match

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1562 · Opened Jan 20, 2026

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• hydra_machine_build_duration_bucket Prometheus labels changed unintentionally

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1561 · 2 comments · Opened Jan 20, 2026

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• S3 bucket is out of sync with Hydra state

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1545 · Opened Dec 8, 2025

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• Support relative paths in hydra-build-products to enable relocatable derivations

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1544 · 1 comment · 2 reactions · Opened Dec 5, 2025

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• README talks about classic-style Nix expressions but provides commands that use flakes

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  Difficulty 1/5 1-3 hours Newbie friendliness 55/100

  NixOS/hydra#1538 · Opened Nov 18, 2025

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• GitLab statuses are not published for new source revisions when the evaluation does not change

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  NixOS/hydra#1519 · 1 reaction · Opened Sep 9, 2025

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• Machine status shows every machine twice

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  NixOS/hydra#1477 · 8 comments · 3 reactions · Opened Apr 13, 2025

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• queue-monitor and dispatcher metrics missing

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  NixOS/hydra#1476 · 6 comments · 3 reactions · Opened Apr 13, 2025

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• Clarify hydra-notify `eval_failed`

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  Difficulty 3/5 1-2 days Newbie friendliness 38/100

  NixOS/hydra#1434 · 1 comment · Opened Jan 30, 2025

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• A route or endpoint to get the state of all jobs in a jobset.

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  NixOS/hydra#1432 · 1 reaction · Opened Jan 7, 2025

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• hydra-api.yaml returns an object when getting evals causing deserialization to fail

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  NixOS/hydra#1430 · 6 comments · Opened Dec 9, 2024

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• Add semantic versioning to hydra-api.yaml

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  NixOS/hydra#1428 · Opened Dec 4, 2024

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• hydra-eval-jobs crashes with SIGSEGV when evaluating a specific nixos toplevel

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  NixOS/hydra#1409 · 2 comments · Opened Sep 19, 2024

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• Patchelf inputs in hydra manual need updating

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  Difficulty 2/5 1-3 hours Newbie friendliness 45/100

  NixOS/hydra#1407 · 1 comment · Opened Sep 6, 2024

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• hydra-notify prometheus metrics with IPv6

  May be free again A pull request for this issue was closed without being merged. Open

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1394 · 1 comment · 1 reaction · Opened Jul 20, 2024

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• transient failure building due to unresolved derivations when building ca-derivations with an s3 store

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  NixOS/hydra#1393 · 1 comment · 1 reaction · Opened Jul 17, 2024

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• dashboard/my-jobs: discover maintained packages also by github ID

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1391 · 1 reaction · Opened Jun 20, 2024

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• "attribute '%s' is %s, which is not supported" error silently discarded, leading to continuous retrying of evaluation

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1390 · Opened Jun 17, 2024

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• The GitLab status plugin should be able to be manually disabled

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  NixOS/hydra#1376 · Opened May 1, 2024

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• Hydra signs with >= 2 sets of keys

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  NixOS/hydra#1366 · 2 comments · 2 reactions · Opened Mar 3, 2024

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• Document how to build a NixOS system toplevel

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  NixOS/hydra#1365 · 5 comments · 2 reactions · Opened Feb 25, 2024

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• Full support for a database connection pooler like pgbouncer

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  NixOS/hydra#1358 · 3 comments · Opened Feb 5, 2024

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• Git submodules not checked out in flake project, even with '?submodules=1' in flake uri.

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1353 · 1 comment · Opened Jan 27, 2024

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• compress_build_logs and upload_logs_to_binary_cache are mutually exclusive and badly conflict with one another

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1338 · 3 reactions · Opened Jan 12, 2024

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• Declarative jobsets plugin is always enabled, causing buildcompleted events to always get fetched from the DB

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1337 · 2 comments · 2 reactions · Opened Jan 12, 2024

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• Remove `NARInfo.pm` autonomous signature

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1331 · 1 comment · Opened Jan 2, 2024

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• Delete generated jobsets that are no longer tracked/generated by `.jobsets`

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  NixOS/hydra#1326 · 1 comment · 6 reactions · Opened Dec 12, 2023

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• Test max output size limit succeeded

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  Difficulty 3/5 1-2 days Newbie friendliness 38/100

  NixOS/hydra#1325 · Opened Dec 10, 2023

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• expose .drv of each build

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  Difficulty 3/5 1-2 days Newbie friendliness 38/100

  NixOS/hydra#1306 · 3 comments · Opened Oct 27, 2023

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• Caught exception in Hydra::Controller::Jobset->jobs_tab "Can't locate object method "jobs" via package "Hydra::Model::DB::Jobsets"

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  NixOS/hydra#1305 · Opened Oct 22, 2023

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• Dashboard: Show failed jobs or sort by job status

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  NixOS/hydra#1299 · Opened Aug 29, 2023

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• IPv6 support

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  NixOS/hydra#1297 · 5 reactions · Opened Aug 8, 2023

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• Repository metadata points to nixos.org/hydra which points to repository

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  Difficulty 1/5 Under an hour Newbie friendliness 35/100

  NixOS/hydra#1289 · Opened Jun 13, 2023

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