evade a potential conflict of /bin/bash versus /bin/sh -> dash (notably on Ubuntu and Debian) -- note that execvpe does not exist on old glibc on Ubuntu 10.04 LTS, but the environ should be unchanged;
#main components for everyday use, without big impact on overall build time
csdp-6.x
cvc4-1.5pre-3
e-1.8
exec_process-1.0.3
Haskabelle-2015
isabelle_fonts-20160102
jdk-8u72
jedit_build-20151124
jfreechart-1.0.14-1
jortho-1.0-2
kodkodi-1.5.2
polyml-5.6-1
scala-2.11.7
spass-3.8ds
xz-java-1.2-1
z3-4.4.0pre