coc-settings.json

{
    "languageserver": {
        "erlang": {
            "command": "erlang_ls",
            "filetypes": ["erlang"]
        },
        "haskell": {
            "command": "haskell-language-server-wrapper",
            "args": ["--lsp"],
            "rootPatterns": [
                "*.cabal",
                "stack.yaml",
                "cabal.project",
                "package.yaml"
            ],
            "filetypes": [
                "hs",
                "lhs",
                "haskell"
            ],
            "initializationOptions": {
                "haskell": {
                }
            }
        },
        "purescript": {
            "command": "purescript-language-server",
            "args": ["--stdio"],
            "filetypes": ["purescript"],
            "trace.server": "off",
            "rootPatterns": ["bower.json", "psc-package.json", "spago.dhall"],
            "settings": {
                "purescript": {
                    "addSpagoSources": true,
                    "addNpmPath": true
                }
            }
        }
    },
    "diagnostic.level": "information",
    "coc.preferences.jumpCommand": "tab drop",
    "elixir.pathToElixirLS": "~/elixir-ls/language_server.sh",
    "snippets.ultisnips.directories": ["UltiSnips", "snips"],
    "rust-analyzer.check.command": "clippy",
    "rust-analyzer.checkOnSave": true
}