metals

Scala language server with rich IDE features.

See full instructions in the Metals documentation:

https://scalameta.org/metals/docs/editors/vim.html#using-an-alternative-lsp-client

Note: that if you're using nvim-metals, that plugin fully handles the setup and installation of Metals, and you shouldn't set up Metals both with it and this plugin.

To install Metals, make sure to have coursier installed, and once you do you can install the latest Metals with cs install metals. You can also manually bootstrap Metals with the following command.

cs bootstrap \
  --java-opt -Xss4m \
  --java-opt -Xms100m \
  org.scalameta:metals_2.12:<enter-version-here> \
  -r bintray:scalacenter/releases \
  -r sonatype:snapshots \
  -o /usr/local/bin/metals -f

Setup

require'lspconfig'.metals.setup{}

Default values

cmd = { "metals" }
filetypes = { "scala" }
init_options = {
  compilerOptions = {
    snippetAutoIndent = false
  },
  isHttpEnabled = true,
  statusBarProvider = "show-message"
}
message_level = 4
root_dir = function(startpath)
    return M.search_ancestors(startpath, matcher)
  end