$ git branch -v
* develop 7e9777f Add latest version of pkg-config (#3672)

$ spack spec abinit+scalapack
Input spec
--------------------------------
abinit+scalapack

Normalized
--------------------------------
abinit+scalapack
    ^blas
    ^lapack
    ^libxc@2.2.1

Concretized
--------------------------------
==> Error: Invalid spec: 'netlib-scalapack@2.0.2%gcc@4.8~fpic+shared arch=linux-ubuntu14-x86_64 ^cmake^hwloc^openblas@0.2.19%gcc@4.8~openmp+pic+shared arch=linux-ubuntu14-x86_64 ^openmpi@2.1.0%gcc@4.8~java~mxm~pmi~psm~psm2~slurm~sqlite3~thread_multiple~tm~verbs+vt arch=linux-ubuntu14-x86_64 ^pkg-config'. Package netlib-scalapack requires dependency netlib-scalapack@2.0.2%gcc@4.8~fpic+shared arch=linux-ubuntu14-x86_64 ^cmake^hwloc^openblas@0.2.19%gcc@4.8~openmp+pic+shared arch=linux-ubuntu14-x86_64 ^openmpi@2.1.0%gcc@4.8~java~mxm~pmi~psm~psm2~slurm~sqlite3~thread_multiple~tm~verbs+vt arch=linux-ubuntu14-x86_64 ^pkg-config, but spec asked for netlib-scalapack@2.0.2%gcc@4.8~fpic+shared arch=linux-ubuntu14-x86_64 ^cmake^hwloc^openblas@0.2.19%gcc@4.8~openmp+pic+shared arch=linux-ubuntu14-x86_64 ^openmpi@2.1.0%gcc@4.8~java~mxm~pmi~psm~psm2~slurm~sqlite3~thread_multiple~tm~verbs+vt arch=linux-ubuntu14-x86_64 ^pkg-config