Successfully merging a pull request may close this issue. That makes the generated bootstraps slightly more heavyweight, but also more portable. the generated scalafmt file is a JAR containing a tiny Java application, along with a URL list as a resource (the URLs of the JARs of scalafmt, in coursier/bootstrap/launcher/bootstrap-jar-urls). This command automatically fetches and extracts a GraalVM Community edition archive, like the java command of coursier does, then uses it to call native-image. Issue should be resolved. This is the default. The java and java-home commands fetch and install JVMs. The high level API of coursier aims at being as simple to use as its CLI, with sensible defaults in particular, while retaining the purity of the low-level API. Certainly not as frequent, but it's happening. Or at least, a different artifact(s) may fail. That would result in some downloaded files being empty or corrupted. When generating standard bootstraps, some of the JARs may come from local repositories, like ~/.ivy2/local. They're the ones we're the most used to in Scala. All code or documentation that is provided must be licensed with the same license that coursier is licensed with (Apache 2.0, see LICENSE). Learn more. If no JVM is installed on your system, the default one is automatically downloaded and extracted in the JVM cache, and used. Both IvyRepository and MavenRepository are case classes, so that it's straightforward to specify one's own repositories. It may actually acquire both in a stale state, but that doesn't lead to errors. One can use another IO monad by adjusting the cache upfront, like, dep"sh.almond:scala-kernel-api_2.12.8:0.2.2", dep"org.apache.spark:spark-sql_2.12:2.4.0". They are more heavyweight, as they embed the full class path of the application to start. :-) Once this situation arises by the way (which is far more often than not with artifacts resolved from this Nexus), it never seems to fix itself. A slightly more sophisticated solution would involve some retries. New Version: 2.0.0-RC6-25: Maven; Gradle; SBT; Ivy; Grape; Leiningen; Buildr We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. The object returned by Resolve() allows to optionally change a number of parameters, discussed below. Specifically: verizon.inf.delorean:core_2.11:1.1.+. privacy statement. This index is regularly updated, and lists a large variety of JVMs for Linux / macOS / Windows. One can add some extra repositories with addRepositories, that accepts multiple arguments, and can be called several times. Have a question about this project? Checksum errors should now result in the underlying file and its checksum files being deleted from the cache, and attempted to be downloaded again, which should solve that issue (since 1.1.0-M14-5 and 4e45013 for the checksum file, and way before that for the underlying file). If a JVM is already installed on your system, the java command simply calls it, just as if you called it yourself: Likewise, the java-home command prints its base directory, which can look like. This sync has a (sometimes significant!) Is there some workaround to deal with it? For example, one can run the java binary from AdoptOpenJDK 13.0.2 via. Correction to the previous: I've now seen it with both Nexuses. lag, due to the way that Nexus is designed. That application reads the URL list, and ensures all of these are available in the coursier cache (it downloads them if necessary). It parses its arguments until it gets an option it doesn't recognize (see cs java --help for the list of options it accepts). It's still subject to source / binary compatibility breakages, even though its general outline shouldn't change much. If needed, that index could be complemented or replaced by an index of our own at some point. To list the JVM that can be installed from it, run. Version Scala Repository Usages Date; 2.0.x. The full names from the index can be cumbersome to remember and type (adopt:13.0.2, adopt:1.8.0-232, graalvm:19.3.1, etc.). I also have several other artifacts which are non-deterministically exhibiting this problem. This requires the application you want a launcher for to be cross-compiled to Scala Native, and its Scala Native artifacts to be published to Maven or Ivy repositories. I forgot to update here, but shortly after my previous comment, I actually saw this issue with an artifact resolved from Maven Central.

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