Set up
Tagged literals are defined by setting a namespaced symbol in data_readers.clj (or data_readers.cljc). At load, Clojure merges all of the maps defined in data_readers.clj(c) files found on the classpath into a single map. At read time, the symbol following a # is checked in the merged data readers map, which determines which var to call with the contents of the following form.
For example, #foo/bar [1 2 3] leads to the reader calling the equivalent of (get *data-readers* 'foo/bar).
Problem statement
The tag of a tagged literal must be determined when it is created. The namespace of the chosen tag is set and cannot be changed by a user. Unlike a fully qualified symbol with an aliased namespace, a tagged literal must what was chosen by the author.
As an author of tagged literals, I want to write tags that will not clash with other tags by giving them complex/deep namespaces. For example, {noahtheduke.lazytest/expect noahtheduke.lazytest/expect}.
As a user of tagged literals, I want to alias the namespace of tags and use it in my code. For example:
;; in src/data_readers.clj
{noahtheduke.lazytest/expect noahtheduke.lazytest/expect}
;; in test/noahtheduke/example_project/main-test.clj
(ns noahtheduke.example-project.main-test
(:require
[noahtheduke.lazytest :as-alias lt]
[noahtheduke.lazytest.core :refer [defdescribe it]]))
(defdescribe some-test
(it "works"
#lt/expect (= 1 2)))
EDN
This is not related to edn at all and any potential change will be to Clojure itself.
