feat: make the path to pyls executable configurable

Author: aminya

lib/main.js

@@ -49,7 +49,8 @@ class PythonLanguageClient extends AutoLanguageClient {
       pylsEnvironment["VIRTUAL_ENV"] = venvPath
     }
     const python = replacePipEnvPathVar(atom.config.get("ide-python.python"), venvPath)
-    const childProcess = super.spawn(python, ["-m", "pyls"], {
+    const pyls = atom.config.get("ide-python.pyls") || "pyls"
+    const childProcess = super.spawn(python, ["-m", pyls], {
       cwd: projectPath,
       env: pylsEnvironment,
     })
@@ -84,7 +85,7 @@ class PythonLanguageClient extends AutoLanguageClient {
         description:
           "Make sure to install `pyls` 0.19 or newer by running:\n" +
           "```\n" +
-          `${python} -m pip install 'python-language-server[all]'\n` +
+          `${python} -m pip install 'python-lsp-server[all]'\n` +
           `${python} -m pip install git+https://github.com/tomv564/pyls-mypy.git\n` +
           "```",
       })