Set JULIA_LANGUAGESERVER=1 for language server processes.

[fredrikekre]

This makes it possible to use direnv with the VSCode extension by setting Julia: Executable Path to the following script:

!#/bin/bash
export DIRENV_BASH=/bin/bash
exec /bin/direnv exec "${JULIA_VSCODE_WORKSPACE}" julia "$@"

[pfitzseb]

This needs to check whether workspaceFolders is defined, as per the docs:

workspaceFolders: ReadonlyArray<WorkspaceFolder> | undefined

List of workspace folders or undefined when no folder is open. Note that the first entry corresponds to the value of rootPath.

I'm also not sure if I like anyone messing with how we start the LS, but there's probably not much we can do about it :) This is also unlikely to be used by anyone who doesn't know what's going on, so whatever.

[fredrikekre]

Thanks, I will fix that. Can it happen that the language server/Julia REPL can be started if it is undefined? Perhaps if you open a single file?

I'm also not sure if I like anyone messing with how we start the LS, but there's probably not much we can do about it :)

I don't need this for the LS startup, but currently there is only a single option for specifying the Julia binary so I don't have much choice.

[pfitzseb]

What do you think about setting a IS_JULIA_LANGUAGESERVER env variable instead? Then your startup script can use pwd for user processes and just pass through for the LS?

[fredrikekre]

Fine with me if you think the system can handle possible different binaries running the user process and the language server.

[fredrikekre]

Updated the PR