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functional-ca-repl flakey test? #690

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opened 2025-02-22 01:44:46 +00:00 by jade · 2 comments
jade commented 2025-02-22 01:44:46 +00:00
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Have not closely inspected this, but it did fail in CI for seemingly no reason on https://gerrit.lix.systems/c/lix/+/2613: https://buildbot.lix.systems/#/builders/457/builds/2422/steps/1/logs/stdio

Leads me to believe it is probably flakey given the change had nothing to do with it:

lix> Listing only the last 100 lines from a long log.
lix> ++(repl.sh:63) shift
lix> ++(repl.sh:64) local 'commands=
lix> drvPath
lix> '
lix> ++(repl.sh:64) shift
lix> +++(repl.sh:69) printf %s '".*-simple.drv"'
lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE
lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//'
lix> ++(repl.sh:69) local 'expectedResponse=".*-simple.drv"'
lix> ++(repl.sh:69) shift
lix> +++(repl.sh:71) nix repl --file /build/source/build/tests/functional/simple.nix --experimental-features ca-derivations
lix> +++(repl.sh:71) stripColors
lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g'
lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE
lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(repl.sh:72) grepQuiet --basic-regexp -s '".*-simple.drv"'
lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s '".*-simple.drv"'
lix> ++(repl.sh:127) testReplResponse '
lix> drvPath
lix> ' '".*-simple.drv"' --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations'
lix> ++(repl.sh:93) testReplResponseGeneral --basic-regexp '
lix> drvPath
lix> ' '".*-simple.drv"' --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations'
lix> ++(repl.sh:63) local grepMode=--basic-regexp
lix> ++(repl.sh:63) shift
lix> ++(repl.sh:64) local 'commands=
lix> drvPath
lix> '
lix> ++(repl.sh:64) shift
lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//'
lix> +++(repl.sh:69) printf %s '".*-simple.drv"'
lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE
lix> ++(repl.sh:69) local 'expectedResponse=".*-simple.drv"'
lix> ++(repl.sh:69) shift
lix> +++(repl.sh:71) nix repl --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations'
lix> +++(repl.sh:71) stripColors
lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g'
lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE
lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(repl.sh:72) grepQuiet --basic-regexp -s '".*-simple.drv"'
lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s '".*-simple.drv"'
lix> ++(repl.sh:130) mkdir -p flake
lix> ++(repl.sh:130) cat
lix> ++(repl.sh:142) testReplResponse '
lix> foo + baz
lix> ' 3 ./flake ./flake#bar --experimental-features 'flakes repl-flake'
lix> ++(repl.sh:93) testReplResponseGeneral --basic-regexp '
lix> foo + baz
lix> ' 3 ./flake ./flake#bar --experimental-features 'flakes repl-flake'
lix> ++(repl.sh:63) local grepMode=--basic-regexp
lix> ++(repl.sh:63) shift
lix> ++(repl.sh:64) local 'commands=
lix> foo + baz
lix> '
lix> ++(repl.sh:64) shift
lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE
lix> +++(repl.sh:69) printf %s 3
lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//'
lix> ++(repl.sh:69) local expectedResponse=3
lix> ++(repl.sh:69) shift
lix> +++(repl.sh:71) nix repl ./flake ./flake#bar --experimental-features 'flakes repl-flake'
lix> +++(repl.sh:71) stripColors
lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g'
lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE
lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#'\''...TEST_NEWLINEAdded 3 variables.TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#bar'\''...TEST_NEWLINEAdded 1 variables.TEST_NEWLINETEST_NEWLINE3TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(repl.sh:72) grepQuiet --basic-regexp -s 3
lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#'\''...TEST_NEWLINEAdded 3 variables.TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#bar'\''...TEST_NEWLINEAdded 1 variables.TEST_NEWLINETEST_NEWLINE3TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE'
lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s 3
lix> +++(repl.sh:160) nix repl ./flake --experimental-features 'flakes repl-flake'
lix> +++(repl.sh:156) echo changingThing
lix> +++(repl.sh:157) sleep 1
lix> +++(repl.sh:158) sed -i s/beforeChange/afterChange/ flake/flake.nix
lix> +++(repl.sh:159) echo :reload
lix> +++(repl.sh:160) echo changingThing
lix> warning: you don't have Internet access; disabling some network-dependent features
lix> Lix 2.93.0-dev
lix> Type :? for help.
lix> fetching path input 'path:/build/nix-test/ca/repl/flake'
lix> Loading installable 'path:/build/nix-test/ca/repl/flake#'...
lix> Added 3 variables.
lix> fetching path input 'path:/build/nix-test/ca/repl/flake'
lix> Loading installable 'path:/build/nix-test/ca/repl/flake#'...
lix> Added 3 variables.
lix> ++(repl.sh:156) replResult='"afterChange"
lix> "afterChange"'
lix> ++(repl.sh:157) echo '"afterChange"
lix> "afterChange"'
lix> ++(repl.sh:157) grepQuiet -s beforeChange
lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep -s beforeChange
lix> +++(repl.sh:157) onError
lix> +++(/build/source/build/tests/functional/common/vars-and-functions.sh:244) set +x
lix> repl.sh: test failed at:
lix>   source in repl.sh:157
lix>   main in repl.sh:5
Have not closely inspected this, but it did fail in CI for seemingly no reason on https://gerrit.lix.systems/c/lix/+/2613: https://buildbot.lix.systems/#/builders/457/builds/2422/steps/1/logs/stdio Leads me to believe it is probably flakey given the change had nothing to do with it: ``` lix> Listing only the last 100 lines from a long log. lix> ++(repl.sh:63) shift lix> ++(repl.sh:64) local 'commands= lix> drvPath lix> ' lix> ++(repl.sh:64) shift lix> +++(repl.sh:69) printf %s '".*-simple.drv"' lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//' lix> ++(repl.sh:69) local 'expectedResponse=".*-simple.drv"' lix> ++(repl.sh:69) shift lix> +++(repl.sh:71) nix repl --file /build/source/build/tests/functional/simple.nix --experimental-features ca-derivations lix> +++(repl.sh:71) stripColors lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g' lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(repl.sh:72) grepQuiet --basic-regexp -s '".*-simple.drv"' lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s '".*-simple.drv"' lix> ++(repl.sh:127) testReplResponse ' lix> drvPath lix> ' '".*-simple.drv"' --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations' lix> ++(repl.sh:93) testReplResponseGeneral --basic-regexp ' lix> drvPath lix> ' '".*-simple.drv"' --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations' lix> ++(repl.sh:63) local grepMode=--basic-regexp lix> ++(repl.sh:63) shift lix> ++(repl.sh:64) local 'commands= lix> drvPath lix> ' lix> ++(repl.sh:64) shift lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//' lix> +++(repl.sh:69) printf %s '".*-simple.drv"' lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE lix> ++(repl.sh:69) local 'expectedResponse=".*-simple.drv"' lix> ++(repl.sh:69) shift lix> +++(repl.sh:71) nix repl --file /build/source/build/tests/functional/simple.nix --extra-experimental-features 'repl-flake ca-derivations' lix> +++(repl.sh:71) stripColors lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g' lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(repl.sh:72) grepQuiet --basic-regexp -s '".*-simple.drv"' lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINELoading installable '\'''\''...TEST_NEWLINEAdded 17 variables.TEST_NEWLINETEST_NEWLINE"/build/nix-test/ca/repl/store/n2fbzncxhgp5w14jamvdhdh173x5pbfc-simple.drv"TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s '".*-simple.drv"' lix> ++(repl.sh:130) mkdir -p flake lix> ++(repl.sh:130) cat lix> ++(repl.sh:142) testReplResponse ' lix> foo + baz lix> ' 3 ./flake ./flake#bar --experimental-features 'flakes repl-flake' lix> ++(repl.sh:93) testReplResponseGeneral --basic-regexp ' lix> foo + baz lix> ' 3 ./flake ./flake#bar --experimental-features 'flakes repl-flake' lix> ++(repl.sh:63) local grepMode=--basic-regexp lix> ++(repl.sh:63) shift lix> ++(repl.sh:64) local 'commands= lix> foo + baz lix> ' lix> ++(repl.sh:64) shift lix> +++(repl.sh:69) awk 1 ORS=TEST_NEWLINE lix> +++(repl.sh:69) printf %s 3 lix> +++(repl.sh:69) sed 's/TEST_NEWLINE$//' lix> ++(repl.sh:69) local expectedResponse=3 lix> ++(repl.sh:69) shift lix> +++(repl.sh:71) nix repl ./flake ./flake#bar --experimental-features 'flakes repl-flake' lix> +++(repl.sh:71) stripColors lix> +++(repl.sh:59) sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g' lix> +++(repl.sh:71) awk 1 ORS=TEST_NEWLINE lix> ++(repl.sh:71) local 'response=warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#'\''...TEST_NEWLINEAdded 3 variables.TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#bar'\''...TEST_NEWLINEAdded 1 variables.TEST_NEWLINETEST_NEWLINE3TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(repl.sh:72) grepQuiet --basic-regexp -s 3 lix> ++(repl.sh:72) printf %s 'warning: you don'\''t have Internet access; disabling some network-dependent featuresTEST_NEWLINELix 2.93.0-devTEST_NEWLINEType :? for help.TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINEfetching path input '\''path:/build/nix-test/ca/repl/flake'\''TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#'\''...TEST_NEWLINEAdded 3 variables.TEST_NEWLINELoading installable '\''path:/build/nix-test/ca/repl/flake#bar'\''...TEST_NEWLINEAdded 1 variables.TEST_NEWLINETEST_NEWLINE3TEST_NEWLINETEST_NEWLINETEST_NEWLINETEST_NEWLINE' lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep --basic-regexp -s 3 lix> +++(repl.sh:160) nix repl ./flake --experimental-features 'flakes repl-flake' lix> +++(repl.sh:156) echo changingThing lix> +++(repl.sh:157) sleep 1 lix> +++(repl.sh:158) sed -i s/beforeChange/afterChange/ flake/flake.nix lix> +++(repl.sh:159) echo :reload lix> +++(repl.sh:160) echo changingThing lix> warning: you don't have Internet access; disabling some network-dependent features lix> Lix 2.93.0-dev lix> Type :? for help. lix> fetching path input 'path:/build/nix-test/ca/repl/flake' lix> Loading installable 'path:/build/nix-test/ca/repl/flake#'... lix> Added 3 variables. lix> fetching path input 'path:/build/nix-test/ca/repl/flake' lix> Loading installable 'path:/build/nix-test/ca/repl/flake#'... lix> Added 3 variables. lix> ++(repl.sh:156) replResult='"afterChange" lix> "afterChange"' lix> ++(repl.sh:157) echo '"afterChange" lix> "afterChange"' lix> ++(repl.sh:157) grepQuiet -s beforeChange lix> ++(/build/source/build/tests/functional/common/vars-and-functions.sh:273) grep -s beforeChange lix> +++(repl.sh:157) onError lix> +++(/build/source/build/tests/functional/common/vars-and-functions.sh:244) set +x lix> repl.sh: test failed at: lix> source in repl.sh:157 lix> main in repl.sh:5 ```
lix-bot commented 2025-02-22 01:47:06 +00:00
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This issue was mentioned on Gerrit on the following CLs:

  • comment in cl/2613 ("deps: backport capnproto promise nodiscard PR")
<!-- GERRIT_LINKBOT: {"cls": [{"backlink": "https://gerrit.lix.systems/c/lix/+/2613", "number": 2613, "kind": "comment"}], "cl_meta": {"2613": {"change_title": "deps: backport capnproto promise nodiscard PR"}}} --> This issue was mentioned on Gerrit on the following CLs: * comment in [cl/2613](https://gerrit.lix.systems/c/lix/+/2613) ("deps: backport capnproto promise nodiscard PR")
pennae commented 2025-03-03 19:48:13 +00:00
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we looked at this and it's almost certainly a load-induced race. the test checks whether the repl actually reloads files when commanded by writing one thing to a file, loading it, printing it, sleeping a while, writing something else, reloading, and printing again. that's clearly jank and should be done with the repl testing framework instead of relying on sleep-based synchronization

we looked at this and it's almost certainly a load-induced race. the test checks whether the repl actually reloads files when commanded by writing one thing to a file, loading it, printing it, sleeping a while, writing something else, reloading, and printing again. that's clearly jank and should be done with the repl testing framework instead of relying on sleep-based synchronization
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regression

This is a regression since some previous version of Lix

  
release-blocker

Blocks public release

  
stability

Fixing this makes the software more stable

  
Status
blocked
Blocked on something

  
Status
invalid
not our bug, duplicate, similar

  
Status
postponed
closed but should maybe look at later (generally with S-wontfix)

  
Status
wontfix
We chose not to change this (see issue comments for more detail).

  
testing

Tests that should be added

  
testing/flakey

Tests that are unreliable/flakey (not to be confused with flakes that test)

  
Topic/Large Scale Installations

Large scale installations of Lix, e.g. NixOS Hydra, Lix CI, big corporate installations etc.

  
ux

makes the user experience better :)

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Affects/CppNix
Affects/Nightly
Affects/Only nightly
Affects/Stable
Area/build-packaging
Area/cli
Area/evaluator
Area/fetching
Area/flakes
Area/language
Area/lix ci
Area/nix-eval-jobs
Area/profiles
Area/protocol
Area/releng
Area/remote-builds
Area/repl
Area/repl/debugger
Area/store
bug
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contributors
Context
drive-by
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maintainers
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RFD
crash 💥
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devx
docs
Downstream Dependents
E/easy
E/hard
E/help wanted
E/reproducible
E/requires rearchitecture
imported
Language/Bash
Language/C++
Language/NixLang
Language/Python
Language/Rust
Needs Langver
OS/Linux
OS/macOS
performance
regression
release-blocker
stability
Status
blocked
Status
invalid
Status
postponed
Status
wontfix
testing
testing/flakey
Topic/Large Scale Installations
ux
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Reference: lix-project/lix#690
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