coc-settings.json

{
    "languageserver": {
        "golang": {
            "command": "gopls",
            "rootPatterns": ["go.mod", ".vim/", ".git/", ".hg/"],
            "filetypes": ["go"],
            "initializationOptions": {
                "usePlaceholders": true
            }
        },
        "rust": {
            "command": "rust-analyzer",
            "filetypes": ["rust"],
            "rootPatterns": ["Cargo.toml"]
        }
    },
    "list.source.files.defaultOptions": ["--number-select"],
    "coc.preferences.extensionUpdateCheck": "weekly",
    "coc.preferences.formatOnSaveFiletypes": [
        "javascript",
        "javascriptreact",
        "typescript",
        "typescriptreact",
        "dart",
        "rust"
    ],
    "tsserver.formatOnType": true,
    "coc.preferences.formatOnType": true,
    "rust-analyzer.inlayHints.enable": false,
    "rust-analyzer.hoverActions.linksInHover": true, 
    "hover.floatMaxHeight": 20 ,
    "hover.floatMaxWidth": 80
}