Ludovic Courtès writes:

Hi Ludovic

> What about putting it in (gnu packages scheme) instead?  Sounds like a
> natural home.

Sure.

>> +    (version "2016-02-20")

> Could you change the ‘version’ field according to the conventions
> described at (info "(guix) Version Numbers")?  Since there’s no release
> number, it’s OK to use “20160220” (no hyphens) before the rest of the
> version field.

OK.

>> +    (arguments
>> +     `(#:modules ((guix build utils)
>> +                  (srfi srfi-1)
>> +                  (srfi srfi-26))
>> +                 #:builder
>
> #:builder should be aligned with #:modules.

Sure, missed this.  Edited by hand for now.
  
I've been fighting with this (i.e.: manually changing Emacs'
indentation, something that feels just so wrong), and wondering
about it.  Isn't .dir-locals.el supposed to handle this
automagically...what am I missing?

I'm used to run indent-region on the whole file, but that often changes
things in most files I ran it in.

Also, for Guix I had to remove delete-trailing-whitespace from my
before-save-variables, otherwise my patches try to delete lots of
whitespace...

>> +                 (let ((gzip (assoc-ref %build-inputs "gzip"))
>> +                       (source (assoc-ref %build-inputs "source"))
>> +                       (texinfo (assoc-ref %build-inputs "texinfo"))
>> +                       (info-dir (string-append %output "/share/info")))
>> +                   (use-modules (guix build utils)
>> +                                (srfi srfi-1)
>> +                                (srfi srfi-26))
>
> Please move ‘use-modules’ to the top:
>
>   (begin
>     (use-modules (srfi …) …)
>
>     (let (…) …))

OK.

>> +                   (and
>> +                    (system* "makeinfo"
>> +                             "--output" (string-append info-dir 
>> "/sicp.info")
>> +                             (string-append source "/sicp-pocket.texi"))
>
> (zero? (system* …))

Yes, better.

>> +It was first published in 1985 by MIT Press and written by Massachusetts
>> +Institute of Technology (MIT) professors Harold Abelson and Gerald Jay
>> +Sussman, with Julie Sussman.")
>
> I would remove the last paragraph.

Done.

> Thanks for filling this gap!  :-)

:-)

Greetings,
Jan

>From 44bcbdb30f6789d4bc460aa84dca27321c074cba Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <jann...@gnu.org>
Date: Thu, 19 May 2016 23:50:09 +0200
Subject: [PATCH] gnu: Add sicp.

* gnu/packages/scheme.scm (sicp): New variable.
---
 gnu/packages/scheme.scm | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/gnu/packages/scheme.scm b/gnu/packages/scheme.scm
index 6cf75c2..3539659 100644
--- a/gnu/packages/scheme.scm
+++ b/gnu/packages/scheme.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2015 Federico Beffa <be...@fbengineering.ch>
 ;;; Copyright © 2016 Ricardo Wurmus <rek...@elephly.net>
 ;;; Copyright © 2016 Efraim Flashner <efr...@flashner.co.il>
+;;; Copyright © 2016 Jan Nieuwenhuizen <jann...@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,8 +26,10 @@
   #:use-module (guix licenses)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix git-download)
   #:use-module (guix utils)
   #:use-module (guix build-system gnu)
+  #:use-module (guix build-system trivial)
   #:use-module (gnu packages m4)
   #:use-module (gnu packages multiprecision)
   #:use-module (gnu packages databases)
@@ -34,6 +37,7 @@
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages texlive)
   #:use-module (gnu packages base)
+  #:use-module (gnu packages compression)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages avahi)
   #:use-module (gnu packages libphidget)
@@ -714,3 +718,54 @@ procedures, embedded in the programming language Scheme, and intended to
 support teaching and research in mathematical physics and electrical
 engineering.")
       (license gpl2+))))
+
+(define-public sicp
+  (package
+    (name "sicp")
+    (version "20160220-1.5b52db56")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/sarabander/sicp";)
+             (commit "5b52db566968d28a89fbbaf338d207f01cc81cac")))
+       (sha256
+        (base32
+         "10h6h7szwlfbshwh18bnl2hvyddj5i7106l79s145l0sjjv15cxb"))))
+    (build-system trivial-build-system)
+    (native-inputs `(("gzip" ,gzip)
+                     ("source" ,source)
+                     ("texinfo" ,texinfo)))
+    (arguments
+     `(#:modules ((guix build utils)
+                  (srfi srfi-1)
+                  (srfi srfi-26))
+       #:builder
+       (begin
+         (use-modules (guix build utils)
+                      (srfi srfi-1)
+                      (srfi srfi-26))
+         (let ((gzip (assoc-ref %build-inputs "gzip"))
+               (source (assoc-ref %build-inputs "source"))
+               (texinfo (assoc-ref %build-inputs "texinfo"))
+               (info-dir (string-append %output "/share/info")))
+          (setenv "PATH" (string-append gzip "/bin"
+                                        ":" texinfo "/bin"))
+          (mkdir-p info-dir)
+          (and
+           (zero?
+            (system* "makeinfo"
+                     "--output" (string-append info-dir "/sicp.info")
+                     (string-append source "/sicp-pocket.texi")))
+           (every zero? (map
+                         (cut system* "gzip" <>)
+                         (find-files info-dir))))))))
+    (home-page "http://sarabander.github.io/sicp";)
+    (synopsis "Structure and Interpretation of Computer Programs")
+    (description "Structure and Interpretation of Computer Programs (SICP) is
+a textbook aiming to teach the principles of computer programming.
+
+Using Scheme, a dialect of the Lisp programming language, the book explains
+core computer science concepts such as abstraction in programming,
+metalinguistic abstraction, recursion, interpreters, and modular programming.")
+    (license cc-by-sa4.0)))
-- 
2.7.3

-- 
Jan Nieuwenhuizen <jann...@gnu.org> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar®  http://AvatarAcademy.nl  

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