Add packages.el for flycheck-joker

Author: n2o

LICENSE

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+MIT License
+
+Copyright (c) 2017 Christian Meter
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.org

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+#+TITLE: clojure-lint layer
+
+# The maximum height of the logo should be 200 pixels.
+[[img/clojure-lint.png]]
+
+# TOC links should be GitHub style anchors.
+* Table of Contents                                        :TOC_4_gh:noexport:
+- [[#description][Description]]
+- [[#install][Install]]
+- [[#key-bindings][Key bindings]]
+
+* Description
+This layer does wonderful things:
+  - thing01
+
+* Install
+To use this configuration layer, add it to your =~/.spacemacs=. You will need to
+add =clojure-lint= to the existing =dotspacemacs-configuration-layers= list in this
+file.
+
+* Key bindings
+
+  | Key Binding | Description    |
+  |-------------+----------------|
+  | ~SPC x x x~ | Does thing01   |
+  # Use GitHub URLs if you wish to link a Spacemacs documentation file or its heading.
+  # Examples:
+  # [[https://github.com/syl20bnr/spacemacs/blob/master/doc/VIMUSERS.org#sessions]]
+  # [[https://github.com/syl20bnr/spacemacs/blob/master/layers/%2Bfun/emoji/README.org][Link to Emoji layer README.org]]
+  # If space-doc-mode is enabled, Spacemacs will open a local copy of the linked file.

packages.el

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+;;; packages.el --- clojure-dev layer packages file for Spacemacs.
+
+(defconst clojure-dev-packages
+  '(flycheck
+    flycheck-joker
+    clojure-mode))
+
+(defun clojure-dev/init-flycheck-joker ()
+  (use-package flycheck-joker))
+
+(defun clojure-dev/post-init-flycheck ()
+  (add-hook 'clojure-mode-hook 'flycheck-mode))
+
+(defun clojure-dev/post-init-clojure-mode ()
+  (add-hook 'clojure-mode-hook 'turn-on-smartparens-strict-mode)
+  (global-set-key (kbd "C-k") 'sp-kill-sexp))