The second day of metabolic modelling work introduced me to more installation stuff required to complete the platform set-up. This all started when I was going through the vignette of the R package sybil and trying to run the example analysis shown in the vignette. I tried to run the flux balance analysis example and it said that I needed glpkAPI. It turns out that I have to first install GNU GLPK. The glpk that was available on ubuntu repository didn't work. So, I installed glpk as follows wget http://ftp.gnu.org/gnu/glpk/glpk-4.48.tar.gz wget http://ftp.gnu.org/gnu/glpk/glpk-4.48.tar.gz.sig sudo gpg --keyserver keys.gnupg.net --recv-keys 5981E818 sudo gpg --keyserver keys.gnupg.net --recv-keys 5981E818 ./configure make make install After this, I tried installing glpkAPI using install.packages , but it didn't work (even with --configure-args specified correctly). Downloading the package to the local drive and installing it from the command console worked. Here is the...