A simple workflow for adding apps guix

[Feng Shu]

The below is the workflow I used current, any other
simpler workflow exists?  comments are welcome!

* I want to add emacs-exwm to emacs.scm

* Fetch newest code
#+BEGIN_EXAMPLE
cd ~/project/guix/  # my guix repo dir
git pull --rebase
#+END_EXAMPLE

* Install newest guix
#+BEGIN_EXAMPLE
guix pull
#+END_EXAMPLE

* Set GUIX_PACKAGE_PATH
#+BEGIN_EXAMPLE
export GUIX_PACKAGE_PATH=${HOME}/guix # I put it to ~/.bashrc :-)
mkdir ~/guix
#+END_EXAMPLE

* Privatize emacs.scm file
#+BEGIN_EXAMPLE
cd ~/guix
mkdir -p gnu/packages
cd gnu/packages
ln -s ~/project/guix/gnu/packages/emacs.scm  # guix repo's emacs.scm file
#+END_EXAMPLE

* Hack -> test -> hack -> test ....

edit ~/project/guix/gnu/packages/emacs.scm
...

Build:   guix build emacs-exwm
Rebuild: guix build emacs-exwm --check
Install: guix package -i emacs-exwm


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