Fails to download on Windows with output "Error creating cache directory...Caused by: java.nio.file.AccessDeniedException: C:\Program Files\Microsoft VS Code\null"

[jarhart]

Describe the bug

Fails with message:

Failed to download Metals, make sure you have an internet connection, the Metals version '1.2.0' is correct and the Java Home 
'C:\Program Files\Java\jdk-17' is valid. You can configure the Metals version and Java Home in the settings.See 
https://scalameta.org/metals/docs/editors/vscode/#http-proxy for instructions if you are using an HTTP proxy.

Output

Java home: C:\Program Files\Java\jdk-17
Metals version: 1.2.0
Exception in thread "main" java.lang.RuntimeException: Error creating cache directory
    at coursier.bootstrap.launcher.c.a(Unknown Source)
    at coursier.bootstrap.launcher.Launcher.main(Unknown Source)
Caused by: java.nio.file.AccessDeniedException: C:\Program Files\Microsoft VS Code\null
    at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:89)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
    at java.base/sun.nio.fs.WindowsFileSystemProvider.createDirectory(WindowsFileSystemProvider.java:521)
    at java.base/java.nio.file.Files.createDirectory(Files.java:700)
    at java.base/java.nio.file.Files.createAndCheckIsDirectory(Files.java:807)
    at java.base/java.nio.file.Files.createDirectories(Files.java:793)
    at coursier.bootstrap.launcher.u.a(Unknown Source)
    at coursier.bootstrap.launcher.p.a(Unknown Source)
    at coursier.bootstrap.launcher.o.a(Unknown Source)
    ... 2 more

Installation:

• Operating system: Windows 11
• VSCode version: 1.8.5
• VSCode extension version: v1.27.0
• Metals version: 1.2.0

Additional context

• Scala version 3.3.1
• Sbt version 1.9.8

[tgodzik]

Thanks for reporting! Looks like an issue we already solved for other things in Metals, but this time it's an issue with coursier. I will try and update coursier binary, this might be fixed there, though not 100% sure about it.

[tgodzik]

A workaround could be installing coursier manually locally, we should be able to pick it up and not run the boostrap.

https://get-coursier.io/docs/cli-installation#windows

[tgodzik]

https://github.com/scalameta/metals-vscode/issues/1450 <- should solve it, we want to work on it sometime soon

[jarhart]

A workaround could be installing coursier manually locally, we should be able to pick it up and not run the boostrap.

https://get-coursier.io/docs/cli-installation#windows

That worked great! Thank you!

[tgodzik]

Good to hear that, since this will be solved by https://github.com/scalameta/metals-vscode/issues/1450 I will close this one.