error: Package `xah-fly-keys-' is unavailable

Question

I am setting up a .emacs file that I will be using in Docker containers.

I want to include xah-fly-keys but I am getting this error message.

Package `xah-fly-keys-' is unavailable

When I start Emacs in a container I want xah-fly-keys to automatically be installed and activated.

xah-fly-keys is in melpa

The relevant parts of the .emacs file are:

;; add melpa repositories
(require 'package)
(add-to-list 'package-archives
         '("melpa-stable" . "https://stable.melpa.org/packages/"))

;; Initialise packages
(package-initialize)

;; require use package
(package-install 'use-package)

;; add xah-fly-keys
(use-package xah-fly-keys
  :ensure t
  :pin melpa-stable)

;; activate xah-fly-keys
(xah-fly-keys 1)

What do I need to do to get this working?

Answer 1

Thanks to @xuchunyang's comment I was able to get this working.

Here is the revised .emacs which adds and uses melpa.

;; require package
(require 'package)

;; add melpa stable
(add-to-list 'package-archives
         '("melpa-stable" . "https://stable.melpa.org/packages/"))

;; add melpa
(add-to-list 'package-archives
         '("melpa" . "http://melpa.milkbox.net/packages/"))

;; Initialise packages
(package-initialize)

;; require use package
(package-install 'use-package)

;; add xah-fly-keys using melpa
(use-package xah-fly-keys
  :ensure t
  :pin melpa)

;; activate xah-fly-keys
(xah-fly-keys 1)