Update `HACKING'.
* HACKING: Capitalize the title. (Running Guix before it is installed): New section. (Adding new packages): Update example.
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HACKING
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HACKING
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-*- mode: org; coding: utf-8; -*-
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-*- mode: org; coding: utf-8; -*-
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#+TITLE: Hacking GNU Guix and its incredible distro
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#+TITLE: Hacking GNU Guix and Its Incredible Distro
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Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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@ -9,6 +9,20 @@ Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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notice and this notice are preserved.
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notice and this notice are preserved.
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* Running Guix before it is installed
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Command-line tools can be used even if you have not run "make install".
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To do that, prefix each command with ‘./pre-inst-env’, as in:
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./pre-inst-env guix-build --help
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Similarly, for a Guile session using the Guix modules:
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./pre-inst-env guile -c '(use-modules (guix utils)) (pk (%current-system))'
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The ‘pre-inst-env’ script sets up all the environment variables
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necessary to support this.
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* Adding new packages
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* Adding new packages
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Package recipes in Guix look like this:
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Package recipes in Guix look like this:
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@ -26,14 +40,14 @@ Package recipes in Guix look like this:
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(base32
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(base32
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"0wicr7amx01l03rm0pzgr1qvw3f9blaw17vjsy1301dh13ll58aa"))))
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"0wicr7amx01l03rm0pzgr1qvw3f9blaw17vjsy1301dh13ll58aa"))))
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(build-system gnu-build-system)
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(build-system gnu-build-system)
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(inputs `(("gnum4" ,gnum4)))
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(inputs `(("m4" ,m4)))
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(propagated-inputs `(("gmp" ,gmp)))
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(propagated-inputs `(("gmp" ,gmp)))
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(home-page
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(home-page
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"http://www.lysator.liu.se/~nisse/nettle/")
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"http://www.lysator.liu.se/~nisse/nettle/")
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(synopsis "GNU Nettle, a cryptographic library")
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(synopsis "GNU Nettle, a cryptographic library")
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(description
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(description
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"Nettle is a cryptographic library...")
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"Nettle is a cryptographic library...")
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(license "GPLv2+"))
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(license gpl2+))
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#+END_SRC
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#+END_SRC
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Such a recipe can be written by hand, and then tested by running
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Such a recipe can be written by hand, and then tested by running
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