Install tex on travis ci

.travis.yml

-language: ruby
-rvm:
-- 2.0.0
-- 1.9.3
-- jruby-19mode
-- rbx-2
+install:
+- source ./support/texlive_install.sh
+cache:
+  directories:
+  - "/tmp/texlive"
+  - "$HOME/.texlive"
 deploy:
   provider: releases
   api_key:

support/texlive.profile

+selected_scheme scheme-basic
+TEXDIR /tmp/texlive
+TEXMFCONFIG ~/.texlive/texmf-config
+TEXMFHOME ~/texmf
+TEXMFLOCAL /tmp/texlive/texmf-local
+TEXMFSYSCONFIG /tmp/texlive/texmf-config
+TEXMFSYSVAR /tmp/texlive/texmf-var
+TEXMFVAR ~/.texlive/texmf-var
+option_doc 0
+option_src 0

support/texlive_install.sh

+#!/usr/bin/env sh
+
+# Originally from https://github.com/latex3/latex3
+
+# This script is used for testing using Travis
+# It is intended to work on their VM set up: Ubuntu 12.04 LTS
+# A minimal current TL is installed adding only the packages that are
+# required
+
+# See if there is a cached version of TL available
+export PATH=/tmp/texlive/bin/x86_64-linux:$PATH
+if ! command -v texlua > /dev/null; then
+  # Obtain TeX Live
+  wget http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
+  tar -xzf install-tl-unx.tar.gz
+  cd install-tl-20*
+
+  # Install a minimal system
+  ./install-tl --profile=../support/texlive.profile
+
+  cd ..
+fi
+
+# Just including texlua so the cache check above works
+# Needed for any use of texlua even if not testing LuaTeX
+tlmgr install luatex
+
+# Needed for TeX Live 2017
+tlmgr install xkeyval
+
+# A kind of minimum set of packages needed
+tlmgr install collection-latex
+
+# Install babel languages
+tlmgr install collection-langeuropean
+
+# Index of packages: http://ctan.mirrors.hoobly.com/systems/texlive/tlnet/archive/
+# Other contrib packages: done as a block to avoid multiple calls to tlmgr
+# pgf includes tikz
+tlmgr install   \
+  exam          \
+  amsmath       \
+  mathtools     \
+  thmtools      \
+  stmaryrd      \
+  xcolor        \
+  pdfpages      \
+  pgf           \
+  cancel        \
+  hyperref      \
+  pgfplots      \
+  listings      \
+  scalerel      \
+  stackengine   \
+  etoolbox      \
+  listofitems   \
+  marvosym      \
+  amsfonts      \
+  opensans      \
+  slantsc       \
+  fancyhdr      \
+  ulem          \
+  algorithms    \
+  algorithmicx  \
+  float         \
+  booktabs      \
+  enumitem      \
+  polynom       \
+  fancyvrb      \
+  makecmds      \
+  multirow      \
+  chngcntr      \
+  imakeidx      \
+  csvsimple     \
+  paralist      \
+  markdown      \
+  ocgx2         \
+  biber         \
+  biblatex      \
+  media9        \
+  latexmk       \
+  logreq        \
+  lm            \
+  ifoddpage     \
+  algorithm2e   \
+  relsize       \
+  microtype     \
+  totpages      \
+  environ       \
+  trimspaces    \
+  textcase      \
+  ncctools      \
+  iftex         \
+  cmap          \
+  savetrees     \
+  moderncv      \
+  caption       \
+  comment       \
+  kpfonts       \
+  libertine     \
+  newpx         \
+  todonotes     \
+  ec            \
+  soul          \
+  subfig        \
+  xstring       \
+  mdwtools      \
+  forest        \
+  import        \
+  l3packages    \
+  l3kernel      \
+  inlinedef     \
+  doublestroke  \
+  wrapfig       \
+  pgfopts
+
+# Keep no backups (not required, simply makes cache bigger)
+tlmgr option -- autobackup 0
+
+# Update the TL install but add nothing new
+tlmgr update --self --all --no-auto-install