feat(lsp): add pyright support

lua/cosmic/core/user.lua

@@ -1,3 +1,4 @@
+-- DEFAULT USER SETTINGS
 local ok, user_config = pcall(require, 'cosmic.config.config')
 
 if not ok then
@@ -16,6 +17,7 @@ local default_config = {
       jsonls = {
         format = false,
       },
+      pyright = true,
       sumneko_lua = {
         format = false,
       },

lua/cosmic/lsp/providers/defaults.lua

@@ -57,6 +57,6 @@ end
 
 M.autostart = true
 
-M.single_file_mode = true
+M.single_file_support = true
 
 return M

lua/cosmic/lsp/providers/init.lua

@@ -58,6 +58,8 @@ lsp_installer.on_server_ready(function(server)
     opts = u.merge(opts, require('cosmic.lsp.providers.tsserver'))
   elseif server.name == 'jsonls' then
     opts = u.merge(opts, require('cosmic.lsp.providers.jsonls'))
+  elseif server.name == 'pyright' then
+    opts = u.merge(opts, require('cosmic.lsp.providers.pyright'))
   elseif server.name == 'sumneko_lua' then
     opts = u.merge(opts, require('cosmic.lsp.providers.sumneko_lua'))
   end

lua/cosmic/lsp/providers/pyright.lua

@@ -0,0 +1,25 @@
+local path = require('lspconfig/util').path
+
+local function get_python_path(workspace)
+  -- Use activated virtualenv.
+  if vim.env.VIRTUAL_ENV then
+    return path.join(vim.env.VIRTUAL_ENV, 'bin', 'python')
+  end
+
+  -- Find and use virtualenv in workspace directory.
+  for _, pattern in ipairs({ '*', '.*' }) do
+    local match = vim.fn.glob(path.join(workspace, pattern, 'pyvenv.cfg'))
+    if match ~= '' then
+      return path.join(path.dirname(match), 'bin', 'python')
+    end
+  end
+
+  -- Fallback to system Python.
+  return exepath('python3') or exepath('python') or 'python'
+end
+
+return {
+  before_init = function(_, config)
+    config.settings.python.pythonPath = get_python_path(config.root_dir)
+  end,
+}