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lsp-setup

Enable code intelligence (go-to-definition, find-references, hover, type info) for any programming language by installing and configuring an LSP server for Copilot CLI. Detects the OS, installs the right server, and generates the JSON configuration (user-level or repo-level). Use when you need deeper code understanding and no LSP server is configured, or when the user asks to set up, install, or configure an LSP server.

skills/lsp-setup/SKILL.md

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# LSP Setup for GitHub Copilot CLI

**UTILITY SKILL** — installs and configures Language Server Protocol servers for Copilot CLI.
USE FOR: "setup LSP", "install language server", "configure LSP for Java", "add TypeScript LSP", "enable code intelligence", "I need go-to-definition", "find references not working", "need better code understanding"
DO NOT USE FOR: general coding tasks, IDE/editor LSP configuration, non-Copilot-CLI setups

## Workflow

1. **Ask the language** — use `ask_user` to ask which programming language(s) the user wants LSP support for
2. **Detect the OS** — run `uname -s` (or check for Windows via `$env:OS` / `%OS%`) to determine macOS, Linux, or Windows
3. **Look up the LSP server** — read `references/lsp-servers.md` for known servers, install commands, and config snippets (for Java, also read `references/java-jdtls.md`)
4. **Ask scope** — use `ask_user` to ask whether the config should be user-level (`~/.copilot/lsp-config.json`) or repo-level (`.github/lsp.json`)
5. **Install the server** — run the appropriate install command for the detected OS
6. **Write the config** — merge the new server entry into the chosen config file (`~/.copilot/lsp-config.json` for user-level; `.github/lsp.json` for repo-level). Create the file if missing and preserve existing entries.