Once a project is converted to a flake, you can't go back to legacy?

We've been slowly converting our Hydra "legacy" jobsets to flakes, via declarative job specs. Tonight I updated 2 repos to flakes, but had to revert the change due to their use of a dependency that doesn't evaluate properly as a flake. Now whenever our Hydra evaluates the declarative job spec, this happens:

Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-462, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  new row for relation "jobsets" violates check constraint "jobsets_flake_paths_check"
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: DETAIL:  Failing row contains (vonnegut-pr-462, 525, hackworthltd, PR 462: [github] Add a feature request template, vonnegut, release.nix, in job ‘source-code-checks’:
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: error: attribute 'currentSystem..., 1619402208, 1619403618, null, 1, 0, 0, , 5, 60, 25, null, null, null, 1, git+ssh://git@github.com/hackworthltd/vonnegut?ref=refs/pull/462...). [for Statement "UPDATE jobsets SET nixexprinput = ?, nixexprpath = ? WHERE ( ( name = ? AND project = ? ) )" with ParamValues: 1='vonnegut', 2='release.nix', 3='vonnegut-pr-462', 4='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:haskell-template, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='haskell-template', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:tc-inference-pr-6, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='tc-inference-pr-6', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:hacknix-lib, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='hacknix-lib', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:hacknix, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='hacknix', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-459, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-459', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:haskell-template-test-flake, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='haskell-template-test-flake', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:haskell-hacknix, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='haskell-hacknix', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-450, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-450', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:haskell-hacknix-pr-198, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='haskell-hacknix-pr-198', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-460, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-460', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-396, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-396', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-354, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-354', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:tc-inference-pr-7, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='tc-inference-pr-7', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:tc-inference, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='tc-inference', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:haskell-hacknix-pr-186, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='haskell-hacknix-pr-186', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-323, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-323', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:compendium, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='compendium', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:hackworth-ops, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='hackworth-ops', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-pr-384, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-pr-384', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:viz, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='viz', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-ghc865, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-ghc865', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:vonnegut-ghc884, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='vonnegut-ghc884', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65
Apr 26 02:20:31 hydra-b hydra-notify[1382764]: ERROR: failed to process declarative jobset hackworthltd:hackworth-nix-darwin, DBIx::Class::Storage::DBI::_dbh_execute(): DBI Exception: DBD::Pg::st execute failed: ERROR:  current transaction is aborted, commands ignored until end of transaction block [for Statement "SELECT me.name, me.id, me.project, me.description, me.nixexprinput, me.nixexprpath, me.errormsg, me.errortime, me.lastcheckedtime, me.triggertime, me.enabled, me.enableemail, me.hidden, me.emailoverride, me.keepnr, me.checkinterval, me.schedulingshares, me.fetcherrormsg, me.forceeval, me.starttime, me.type, me.flake FROM jobsets me WHERE ( ( me.name = ? AND me.project = ? ) )" with ParamValues: 1='hackworth-nix-darwin', 2='hackworthltd'] at /nix/store/dnkb3ld53d7n3p4wwzxbr3kv4x43559d-hydra-0.1.20210426.523d6df/libexec/hydra/lib/Hydra/Helper/AddBuilds.pm line 65

What's odd is that a few of those are still legacy projects and always have been, so I'm not sure why they're failing.

We're running https://github.com/NixOS/hydra/commit/85e299d3d7883f5b8a0394784f918e30f91bf8d7, by the way.

Start with Hydra/Helper/AddBuilds.pm at line 65 and the jobsets_flake_paths_check constraint mentioned in the database error. Trace how declarative jobsets update nixexprpath and flake when a project is changed back from flakes. Done means the legacy configuration can be processed without the constraint violation or transaction-aborted errors.