is there a way to just get whatevers at master with git deps?

try to write a quick-try command for a lib

No

By design, we want to use stable versions for caching purposes

But you can use the gitlibs lib to look up what sha master is

you can even one-line it - clj comes with a built-in :deps alias that includes tools.deps (and tools.gitlib):

$ clj -A:deps -e "(require 'clojure.tools.gitlibs)" -e '(println (clojure.tools.gitlibs/resolve "" "master"))'
d86fec647b705b5d01d27c32322c9ccc9f65b77c
$ clj -Sdeps '{:deps {org.clojure/tools.gitlibs {:git/url "" :sha "d86fec647b705b5d01d27c32322c9ccc9f65b77c"}}}'
Checking out:  at d86fec647b705b5d01d27c32322c9ccc9f65b77c
Clojure 1.10.0
user=> (require '[clojure.spec-alpha2 :as s])
nil
user=> (s/conform (s/spec int?) 10)
10

rub some scripting on that and you’ve got something

Could you combine that with the add-lib branch and dynamically load the master version into your REPL? (I can't remember whether add-lib works with git libs)

sure

add-lib works with any dep supported by tools.deps

Yeah, nice

user=> (require '[clojure.tools.deps.alpha.repl])
nil
user=> (require '[clojure.tools.gitlibs])
nil
user=> (defn load-master [lib] (let [git (str "" lib ".git")] (clojure.tools.deps.alpha.repl/add-lib lib {:git/url git :sha (clojure.tools.gitlibs/resolve git "master")})))
#'user/load-master
user=> (load-master 'clojure/tools.trace)
Checking out:  at fbba1a5012bae0ac4ed5cd704babf23e9e3fbc44
Downloading: org/clojure/clojure/1.4.0/clojure-1.4.0.pom from 
Downloading: org/clojure/clojure/1.4.0/clojure-1.4.0.jar from 
true
user=>        

^ @lilactown

Clever! Thanks 😁

I ❤️ Clojure 🙂

(interesting that clojure/tools.trace has a dependency on Clojure 1.4.0!)

a lot of the contribs depend on the oldest version they can support

CI no longer tests anything older than 1.7 iirc

I haven't taken the plunge into using tools.dep yet, but absorbing via osmosis through Sean's code snippets! Thanks!