This restores the operation of nix develop to the level of functionality it had when we were building using JDK 21 with Preview enabled. Now that jdk22, Gradle 8.7, and the latest (JDK22-based) jextract are all available in Nixpkgs unstable we have everything working again.
flake.lock is updated to get the current nixos-unstable branch with Gradle 8.7, etc.
Secp256k1-examples-kotlin/build.gradle needs to run with JDK 22 because we only want to require a single JDK (22) for use by javaToolchains. (But we must continue to tell the Kotlin compiler to target JDK 21 for now)
This restores the operation of
nix developto the level of functionality it had when we were building using JDK 21 with Preview enabled. Now thatjdk22, Gradle 8.7, and the latest (JDK22-based)jextractare all available in Nixpkgsunstablewe have everything working again.flake.lockis updated to get the currentnixos-unstablebranch with Gradle 8.7, etc.Secp256k1-examples-kotlin/build.gradleneeds to run with JDK 22 because we only want to require a single JDK (22) for use by javaToolchains. (But we must continue to tell the Kotlin compiler to target JDK 21 for now)