Clojurians Log v2

Very late to the party, but this is a perfect use case for Makefile:

.javac: $(wildcard java/foo/*.java)
    clojure -T:build compile-java

repl: .javac
    clojure -M:dev:test:repl

is that what wildcard does? I've never heard of that before

wildcard allows you to depend on multiple files (using glob-like syntax), or files that may be absent (which, if present, would invalidate the 'cache')

that's very cool

have you heard the good word about the repl?

you could run the build in your repl, then restart

care to explain a little? I thought i had to restart the repl to get the latest version of the compiled java class

you do (well, depends on your editor - Cursive can hot reload classes) but the tools.build call is ultimately just running a function

you might (depends on your deps) be able to include the :build alias in your repl (+ "." in :paths) and then just (build/compile {})

b/c tools.build will bring in a lot of deps, these might conflict with your app, but also they might not :)

OR you could do the same in a separate repl that you keep running for hte purpose of rebuilding

this is where "builds as programs" comes home :)

cool, that all makes sense

FWIW, I run a REPL for my build script 24x7 separate from my application so that I can run pipelines of tasks easily. I start my "build REPL" like this:

clj -M:build -i build.clj -e "(in-ns 'build)" -r

build=> (compile-java {})

(->build=>  {} (check-all) (ancient) (cve-check) (cold-start) (test-stable) (build-uberjars))

that's smart

https://meyvn.org will watch a directory of Java source files, and when modification occurs, it will recompile the affected class and its dependent classes. It achieves this by doing static analysis not on source files but on compiled classes. By keeping a dependency graph, it knows which classes need to be reloaded and in what order. This is a seamless experience. Here's a https://www.youtube.com/watch?v=xIuJ0f1Vqek.