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feat: replace csharp-ls with roslyn-language-server - #14463
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Thanks for updating your PR! It now meets our contributing guidelines. 👍 |
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adam-paterson
commented
Feb 25, 2026
Just spent the afternoon implementing this myself! ➕ |
Hona
commented
Apr 20, 2026
Member
heya @jmbryan4 the rosyln team says their LSP is good now - can you update this PR from dev + remove the flag. |
Bring the branch current with upstream dev (2014 commits). Resolves conflicts in flag.ts, lsp/index.ts, and lsp/server.ts by taking the upstream refactored structure and applying the roslyn swap on top.
Contributor
Thanks for updating your PR! It now meets our contributing guidelines. 👍 |
jmbryan4
commented
Apr 21, 2026
ContributorAuthor
@Hona great! I updated the PR |
Hona
commented
Apr 21, 2026
Member
thanks @jmbryan4 presumably you've tested within a C# project using |
Hona
reviewed
Apr 21, 2026
Comment on lines
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| "--tool-path", | ||
| Global.Path.bin, |
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lets just drop these 2 - global is okay here
jmbryan4
commented
Apr 21, 2026
ContributorAuthor
yes |
Hona
enabled auto-merge (squash)
April 21, 2026 21:53
Hona
approved these changes
Apr 21, 2026
Hona
commented
Apr 21, 2026
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thank you - nice work :) |
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Issue for this PR
Closes#14462
Type of change
What does this PR do?
Replaces
csharp-lswithroslyn-language-serveras the default C# LSP. (@Hona confirmed this on 2026-04-20 with the Roslyn team).The
CSharpexport inlsp/server.tsnow installsroslyn-language-serverviadotnet tool install --global roslyn-language-server --prereleaseand starts it with--stdio --autoLoadProjects. The server id stays"csharp"so existing user configs are unaffected.How did you verify your code works?
Screenshots / recordings
N/A — no UI changes.
Checklist