Configuration option for pyls executable (python-lsp#513)

* vscode: pyls executable path can be configured via "pyls.executable" parameter.

* vscode: fixed identation

README.rst

@@ -119,8 +119,7 @@ Develop against VS Code
 
 The Python language server can be developed against a local instance of Visual Studio Code.
 
-1. Install `VSCode for Mac <http://code.visualstudio.com/docs/?dv=osx>`_
-2. From within VSCode View -> Command Palette, then type *shell* and run ``install 'code' command in PATH``
+1. Install `VSCode <https://code.visualstudio.com/download`_
 
 .. code-block:: bash
 

vscode-client/package.json

@@ -1,6 +1,6 @@
 {
-    "name": "vscode-client",
-    "description": "VSCode extension for running multiple language servers",
+    "name": "pyls",
+    "description": "Python language server",
     "author": "Sourcegraph",
     "repository": "https://github.com/Microsoft/vscode-languageserver-node",
     "license": "MIT",
@@ -20,6 +20,11 @@
             "title": "Python Language Server Configuration",
             "type": "object",
             "properties": {
+                "pyls.executable": {
+                    "type": "string",
+                    "default": "pyls",
+                    "description": "Language server executable"
+                },
                 "pyls.configurationSources": {
                     "type": "array",
                     "default": ["pycodestyle"],

vscode-client/src/extension.ts

@@ -43,7 +43,8 @@ function startLangServerTCP(addr: number, documentSelector: string[]): Disposabl
 }
 
 export function activate(context: ExtensionContext) {
-    context.subscriptions.push(startLangServer("pyls", ["-vv"], ["python"]));
+    const executable = workspace.getConfiguration("pyls").get<string>("executable");
+    context.subscriptions.push(startLangServer(executable, ["-vv"], ["python"]));
     // For TCP server needs to be started seperately
     // context.subscriptions.push(startLangServerTCP(2087, ["python"]));
 }