If any change is made to composer.json, 'arc lint' fails with RuntimeException: Undefined array key "hash"
Trace:
EXCEPTION: (PhutilAggregateException) Some linters failed:
- RuntimeException: Undefined array key "hash" at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:264]
arcanist(head=master, ref.master=df6c315ace5f, custom=4)
#0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer) called at [<arcanist>/src/lint/linter/ArcanistComposerLinter.php:44]
#1 <#2> ArcanistComposerLinter::lintComposerJson(string) called at [<arcanist>/src/lint/linter/ArcanistComposerLinter.php:32]
#2 <#2> ArcanistComposerLinter::lintPath(string) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:578]
#3 <#2> ArcanistLintEngine::executeLinterOnPaths(ArcanistComposerLinter, array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:536]
#4 <#2> ArcanistLintEngine::executeLintersOnChunk(array, array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:474]
#5 <#2> ArcanistLintEngine::executeLinters(array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:206]
#6 ArcanistLintEngine::run() called at [<arcanist>/src/workflow/ArcanistLintWorkflow.php:219]
#7 ArcanistLintWorkflow::run() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:1170]
#8 ArcanistDiffWorkflow::runLint() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:1132]
#9 ArcanistDiffWorkflow::runLintUnit() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:363]
#10 ArcanistDiffWorkflow::run() called at [<arcanist>/scripts/arcanist.php:427]This is because the hash key was removed from the composer.lock file in composer version 1.3.0 released in 2016. See https://github.com/composer/composer/blob/main/CHANGELOG.md
1.3.0-RC - 2016-12-11
<snip>
- Removed hash from composer.lock, only content-hash is now used which should reduce conflicts