nixpkgs/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/default.nix

{stdenv, fetchurl, pidgin, imagemagick, ghostscript,
	pkgconfig, glib, gtk, tetex}:
stdenv.mkDerivation {
  name = "pidgin-latex";

  src = 
	fetchurl {
		url = http://tapas.affenbande.org/pidgin-latex/pidgin-latex-0.9.tgz;
		sha256 = "1yqd3qgxd3n8hm60qg7yv7j1crr6f3d4yrdpgwdpw2pyf92p8nxp";
	};

  preBuild = "
  	sed -e '/^PREFIX/d' -i Makefile ; 
	sed -e 's@/usr/bin/latex@${tetex}/bin/pdflatex@g' -i pidgin-latex.h
	sed -e 's@/usr/bin/convert@${imagemagick}/bin/convert@g' -i pidgin-latex.h
	sed -e 's@.*convert_path.*@const gchar *convert = CONVERT_PATH;@'
	sed -e 's@.*latex_path.*@const gchar *convert = LATEX_PATH;@'
	sed -e 's/%s.dvi/%s.pdf/' -i pidgin-latex.c
  ";

  makeFlags="PREFIX=\$(out)";

  preInstall="mkdir -p \${out}/lib/pidgin \${out}/bin";
  
  postInstall = "mkdir -p \${out}/share/pidgin-latex; 
	ln -s \${out}/lib/pidgin/pidgin-latex.so \${out}/share/pidgin-latex/";

  buildInputs = [pidgin imagemagick ghostscript pkgconfig glib gtk tetex];

  meta = {
    description = "
	Pidgin-LaTeX is a pidgin plugin that cuts everything inside \$\$ .. \$\$
	and feeds to LaTeX. A bit of conversion (automated, of course) - and you
	see every formula that occurs in conversation in pretty graphical form.
	There are some glitches - when a formula fails to compile, you can see 
	just previous formula..
	Enable it for user by linking to ~/.purple/plugins - from 
	sw/share/pidgin-latex , not from store of course.
";
  };
}