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(~/clojure/t)-(!2011)-> cat > deps.edn {:aliases {:foo ["some" "data"]}} Tue Apr 30 22:33:28 (~/clojure/t)-(!2012)-> clj Clojure 1.12.0-alpha11 user=> Tue Apr 30 22:33:37 (~/clojure/t)-(!2013)-> clojure -X:deps aliases Execution error (ClassCastException) at clojure.tools.deps.cli.api/aliases$fn$fn (api.clj:170). class java.lang.String cannot be cast to class java.util.Map$Entry (java.lang.String and java.util.Map$Entry are in module java.base of loader 'bootstrap') Full report at: /tmp/clojure-4544942395618193305.edn