Re: Small texlive variant

[Andreas Enge <andreas@enge.fr>]

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On Tue, Jan 19, 2016 at 10:20:42AM +0100, Ludovic Courtès wrote:
> This is a bit verbose.  I think it would be nice to have a data
> structure to describe what we are deleting, along these lines
> (untested):

I agree, computer science 101 tells us to use a function when repeating the
same sequence of statements on separate data. This is what I did in the new
attached patch; I also "flattened out" the deletion as you suggest.

However, the data structure thing was too complicated for me and I think not
really needed.

Comments are again welcome.

Andreas


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From 8a2ebb8163c54f80f2a5e4708956b87b134ada85 Mon Sep 17 00:00:00 2001
From: Andreas Enge <andreas@enge.fr>
Date: Fri, 15 Jan 2016 16:00:47 +0100
Subject: [PATCH] gnu: Add texlive-minimal.

* gnu/packages/texlive.scm (texlive-texmf-minimal, texlive-minimal):
  New variables.
---
 gnu/packages/texlive.scm | 83 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/texlive.scm b/gnu/packages/texlive.scm
index 0b2dec4..f51f853 100644
--- a/gnu/packages/texlive.scm
+++ b/gnu/packages/texlive.scm
@@ -24,6 +24,7 @@
   #:use-module (guix download)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system trivial)
+  #:use-module (guix utils)
   #:use-module (gnu packages)
   #:use-module (gnu packages bash)
   #:use-module (gnu packages compression)
@@ -45,7 +46,9 @@
   #:use-module (gnu packages xorg)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages zip)
-  #:autoload   (gnu packages texinfo) (texinfo))
+  #:autoload   (gnu packages texinfo) (texinfo)
+  #:use-module (ice-9 ftw)
+  #:use-module (srfi srfi-1))
 
 (define texlive-extra-src
   (origin
@@ -284,6 +287,84 @@ This package contains the complete TeX Live distribution.")
    (license (license:fsf-free "http://tug.org/texlive/copying.html"))
    (home-page "http://www.tug.org/texlive/")))
 
+
+;; texlive-texmf-minimal is a pruned, small version of the texlive tree,
+;; in particular dropping documentation and fonts.
+(define-public texlive-texmf-minimal
+  (package (inherit texlive-texmf)
+   (name "texlive-texmf-minimal")
+   (arguments
+    (substitute-keyword-arguments
+     (package-arguments texlive-texmf)
+     ((#:modules modules)
+      `((ice-9 ftw)
+        (srfi srfi-1)
+        ,@modules))
+     ((#:phases phases)
+      `(modify-phases ,phases
+         (add-after 'unpack 'prune
+           (lambda _
+             (with-directory-excursion "texmf-dist"
+               (for-each delete-file-recursively
+                         '("doc" "source" "tex4ht"))
+               ;; Delete all subdirectories of "fonts", except for those
+               ;; named "cm", that is, "afm/public/amsfonts/cm",
+               ;; "map/dvips/cm", "pk/ljfour/public/cm" (which is effectively
+               ;; all of "pk"), "source/public/cm", "tfm/public/cm" and
+               ;; "type1/public/amsfonts/cm".
+               ;; Inside "tfm", apparently more subdirectories are needed for
+               ;; successful bootstrapping of the formats, so we keep
+               ;; all of "tfm/public".
+             (let ((delete
+                     ;; delete all files and directories in SUBDIR
+                     ;; except for those given in the list EXCLUDE
+                     (lambda (subdir exclude)
+                       (with-directory-excursion subdir
+                         (for-each delete-file-recursively
+                                   (lset-difference equal?
+                                                    (scandir ".")
+                                                    (append '("." "..")
+                                                            exclude)))))))
+               (delete "fonts" '("afm" "map" "pk" "source" "tfm" "type1"))
+               (delete "fonts/afm" '("public"))
+               (delete "fonts/afm/public" '("amsfonts"))
+               (delete "fonts/afm/public/amsfonts" '("cm"))
+               (delete "fonts/map" '("dvips"))
+               (delete "fonts/map/dvips" '("cm"))
+               (delete "fonts/source" '("public"))
+               (delete "fonts/source/public" '("cm"))
+               (delete "fonts/tfm" '("public"))
+               (delete "fonts/type1" '("public"))
+               (delete "fonts/type1/public" '("amsfonts"))
+               (delete "fonts/type1/public/amsfonts" '("cm"))))
+             #t))))))
+   (description
+    "TeX Live provides a comprehensive TeX document production system.
+It includes all the major TeX-related programs, macro packages, and fonts
+that are free software, including support for many languages around the
+world.
+
+This package contains a small subset of the texmf-dist data.")))
+
+
+;; texlive-minimal is the same as texlive, but using texlive-texmf-minimal
+;; instead of the full texlive-texmf. It can be used, for instance, as a
+;; native input to packages that need texlive to build their documentation.
+(define-public texlive-minimal
+  (package (inherit texlive)
+   (name "texlive-minimal")
+   (inputs
+    `(("texlive-texmf" ,texlive-texmf-minimal)
+      ,@(alist-delete "texlive-texmf" (package-inputs texlive))))
+   (description
+    "TeX Live provides a comprehensive TeX document production system.
+It includes all the major TeX-related programs, macro packages, and fonts
+that are free software, including support for many languages around the
+world.
+
+This package contains a small working part of the TeX Live distribution.")))
+
+
 (define-public rubber
   (package
     (name "rubber")
-- 
2.6.3