Merge pull request #1199 from yancouto/texlive

Adding texlive package

packages/texlive.rb

+require 'package'
+
+class Texlive < Package
+  description 'TeX Live is an easy way to get up and running with the TeX document production system.'
+  homepage 'https://www.tug.org/texlive/'
+  version '2017'
+  source_url 'ftp://tug.org/historic/systems/texlive/2017/texlive-20170524-extra.tar.xz'
+  source_sha256 'afe49758c26fb51c2fae2e958d3f0c447b5cc22342ba4a4278119d39f5176d7f'
+
+  depends_on 'perl'
+
+  def self.build
+    system "rm -rf *"
+    system "wget ftp://ftp.fu-berlin.de/tex/CTAN/systems/texlive/tlnet/install-tl-unx.tar.gz"
+    system "wget ftp://ftp.fu-berlin.de/tex/CTAN/systems/texlive/tlnet/install-tl-unx.tar.gz.sha512"
+    system "cat install-tl-unx.tar.gz.sha512 | xargs | cut -d' ' -f1 > sha512"
+    sha512 = open('sha512').read.chomp
+    abort 'Checksum mismatch. :/ Try again.'.lightred unless Digest::SHA512.hexdigest( File.read('install-tl-unx.tar.gz') ) == "#{sha512}"
+    system "tar xvf install-tl-unx.tar.gz"
+    system "mv install-tl-20*/* ."
+    system "rm -rf install-tl-20*/"
+  end
+
+  def self.install
+    dir = "#{CREW_DEST_PREFIX}/share/texlive"
+    system "yes I | TEXLIVE_INSTALL_PREFIX=#{dir} \
+           TEXLIVE_INSTALL_TEXMFVAR=#{dir}/local/texmf-var \
+           TEXLIVE_INSTALL_TEXMFCONFIG=#{dir}/local/texmf-config \
+           TEXLIVE_INSTALL_TEXMFHOME=#{dir}/local \
+           ./install-tl --scheme=basic --no-cls"
+    system "find #{dir} -iname '*.pdf' -delete" # saving some space
+    system "find #{dir}/20*/texmf-dist/doc -type f -and -not -path '*man*' -delete"
+    system "find #{dir} -name 'tlmgr' -exec {} init-usertree ';'"
+  end
+
+  def self.postinstall
+    path = `echo #{CREW_PREFIX}/share/texlive/20*`.chomp
+    puts "\nPlease add texlive to your PATH and MANPATH to be able to use the executables and manpages. Use the following commands:".lightblue
+    puts " echo \"export PATH=\$PATH:#{path}/bin/#{ARCH}-linux\" >> ~/.bashrc".lightblue
+    puts " echo \"export MANPATH=\$MANPATH:#{path}/bin/texmf-dist/doc/man\" >> ~/.bashrc".lightblue
+    puts " source ~/.bashrc".lightblue
+    puts "\nThis is a very small installation, with only the basic packages. To install more, use `tlmgr install <package>`.".lightblue
+  end
+end