A GitHub Action that installs jolt (native Clojure on Chez Scheme, no JVM) on a runner. There's no marketplace action for this today, the way DeLaGuardo/setup-clojure covers babashka and the Clojure CLI, so this is that, for jolt.

Proof of concept. Downloads a prebuilt release from jolt-lang/jolt's own GitHub releases and verifies its published sha256. Every download retries up to five times, so a transient error from GitHub's release CDN doesn't fail the job. Covers Linux x86_64 and macOS x86_64/arm64, the platforms jolt-lang/jolt ships prebuilt binaries for today (x86_64 Windows exists upstream too, not wired here yet).

- uses: jlt-commons/setup-jolt@v1
  with:
    version: '0.8.6'   # or omit for "latest"

- run: jolt --version

lambda-mvp-jlt wanted its docs-site CI step to run via jolt instead of installing babashka separately, since jolt reads a project's bb.edn tasks directly. That specific swap turned out to be blocked on the consuming side (the docs engine's own bb.edn eagerly requires org.httpkit.server, which jolt doesn't bundle, so its tasks don't load under jolt yet, independent of this action), but the "how do you even get jolt onto a runner" half of the problem was real and generally useful, so it's split out here rather than living inline in one project's workflow.

EPL 2.0, see LICENSE.