Omnisharp-Roslyn not available in the list of installable servers

[mcraveiro]

Thank you for the bug report

• I am using the latest version of lsp-mode related packages.
• I checked FAQ and Troubleshooting sections
• You may also try reproduce the issue using clean environment using the following command

emacs -q -l lsp-start-plain.el

where lsp-start-plain.el can be downloaded here.

Bug description

According to the documentation [1], Omnisharp-Roslyn should be available from the list of installable servers:

Installation

This Server supports automatic install. Install this language server with M-x lsp-install-server RET omnisharp RET.

Supports automatic installation.

[1] https://emacs-lsp.github.io/lsp-mode/page/lsp-csharp-omnisharp/

Steps to reproduce

With latest lsp-mode, omnisharp is not selectable from the list.

Expected behavior

omnisharp should be part of the list.

Which Language Server did you use?

Omnisharp-Roslyn [1]

[1] https://github.com/OmniSharp/omnisharp-roslyn

OS

Linux

Error callstack

No response

Anything else?

No response

[ericdallo]

@mcraveiro could you try with C-u M-x lsp-install-server? we don't show the server to install when it's already installed or lsp-mode find the program in PATH

[mcraveiro]

Hi @ericdallo, many thanks for the prompt reply, I was just about to update the ticket! :-) this is exactly the problem, the server was already installed but for some reason its not kicking in when I open up a C# file. I've uninstalled the server and then it correctly showed up on the list. Perhaps it would be nice to show installed servers with a comment ("already installed")?

[ericdallo]

Yeah, you are not the first one suggesting that, IMO we can show that and lsp-mode just force install if user select that.
WDYT @yyoncho ?

[mcraveiro]

Argh, can you believe it, I was calling (lsp-mode) in my C# hooks instead of (lsp). Typical user error! :-) all working now, thanks!

[mcraveiro]

Yeah, you are not the first one suggesting that, IMO we can show that and lsp-mode just force install if user select that.
WDYT @yyoncho ?

Ah actually that is a very nice idea! I mean you can just show omnisharp in the list of servers, and when the user selects it you could ask: "server is already installed, would you like to reinstall?" This would be very helpful in cases such as mine methinks.