in src/com/jetbrains/php/tools/quality/psalm/PsalmComposerConfig.java [91:102]
protected boolean applyRulesetFromRoot(@NotNull Project project) {
VirtualFile customRulesetFile = detectCustomRulesetFile(project.getBaseDir(), PSALM_XML);
if(customRulesetFile == null){
customRulesetFile = detectCustomRulesetFile(project.getBaseDir(), PSALM_XML + ".dist");
}
if (customRulesetFile != null) {
final String path = customRulesetFile.getPath();
return modifyRulesetPsalmInspectionSetting(project, tool -> applyRuleset(project, path));
}
return false;
}