Due to build issues on macs, I want to install hdf5 as an external library on my mac. I needed to hack the hdf5 source to get this to build, that went successfully and I was able to build and install the library. However when I try to register this in spack it gets the variants wrong. The entry I am using from packages.yaml is

hdf5:
paths:
[email protected] %[email protected] arch=darwin-highsierra-x86_64+fortran+mpi: /usr/local/gnu/hdf5
[email protected] %[email protected] arch=darwin-highsierra-x86_64+fortran+mpi: /usr/local/intel/hdf5
[email protected] %[email protected] arch=darwin-highsierra-x86_64+fortran+mpi: /usr/local/gnu/hdf5
[email protected] %[email protected] arch=darwin-highsierra-x86_64+fortran+mpi: /usr/local/intel/hdf5
buildable: False

note that [email protected] has a bug that prevents it from building in macs. This bug is fixed in [email protected]. The hack I made was needed to produce dynamic libraries using the Intel compiler. Anyway I install the package using

spack install [email protected]+fortran+mpi %[email protected]

(and similarly for the other cases). The install gives normal messages and "spack find hdf5" reports

==> 1 installed packages.
-- darwin-highsierra-x86_64 / [email protected] -------------------------
[email protected]

as it should. However when I run spack -v hdf5 I get

[email protected]cxxdebugfortranhl+mpi+pic+sharedszipthreadsafe

the installation has disabled fortran (DRAT!!). This messes up the build system I am using which wants hdf5 to have fortran (I built hdf5 by hand to have fortran).

Expected Result

spack find -v to report

[email protected]cxxdebug+fortranhl+mpi+pic+sharedszip~threadsafe

Actual Result

The external library thinks it doesn't have fortran.

Steps to reproduce the issue

compile hdf5 by hand and install it as an external library.

Information on your system

This includes:

macOS 10.13.4
Mac Pro late 2013

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