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Update `HACKING'.

* HACKING: Capitalize the title.
  (Running Guix before it is installed): New section.
  (Adding new packages): Update example.
gn-latest-20200428
Ludovic Courtès pirms 8 gadiem
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      HACKING

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HACKING Parādīt failu

@@ -1,6 +1,6 @@
-*- mode: org; coding: utf-8; -*-

#+TITLE: Hacking GNU Guix and its incredible distro
#+TITLE: Hacking GNU Guix and Its Incredible Distro

Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>

@@ -9,6 +9,20 @@ Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
notice and this notice are preserved.


* Running Guix before it is installed

Command-line tools can be used even if you have not run "make install".
To do that, prefix each command with ‘./pre-inst-env’, as in:

./pre-inst-env guix-build --help

Similarly, for a Guile session using the Guix modules:

./pre-inst-env guile -c '(use-modules (guix utils)) (pk (%current-system))'

The ‘pre-inst-env’ script sets up all the environment variables
necessary to support this.

* Adding new packages

Package recipes in Guix look like this:
@@ -26,14 +40,14 @@ Package recipes in Guix look like this:
(base32
"0wicr7amx01l03rm0pzgr1qvw3f9blaw17vjsy1301dh13ll58aa"))))
(build-system gnu-build-system)
(inputs `(("gnum4" ,gnum4)))
(inputs `(("m4" ,m4)))
(propagated-inputs `(("gmp" ,gmp)))
(home-page
"http://www.lysator.liu.se/~nisse/nettle/")
(synopsis "GNU Nettle, a cryptographic library")
(description
"Nettle is a cryptographic library...")
(license "GPLv2+"))
(license gpl2+))
#+END_SRC

Such a recipe can be written by hand, and then tested by running


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