I ran into issues when attempting to build papi@5.7.0 +sde complaining about missing files pertaining to sde. Looking at http://icl.utk.edu/papi/software/view.html?id=275, it appears that the Software Defined Events (SDE) component was only added in @6.0.0.

I would have expected spack to complain about trying to use +sde on papi versions <6.0.0.

Steps to reproduce the issue

$ spack install papi@5.7.0 %gcc@8.4.0 +infiniband+lmsensors+powercap+rapl+sde+shared

results in an errors like

  >> 109    checking for components to build... find: 'components/sde': No such
             file or directory

Information on your system

$> spack debug report
* **Spack:** 0.14.2
* **Python:** 3.6.8
* **Platform:** linux-rhel8-ivybridge

Additional information

• spack-build-env.txt
• spack-build-out.txt

@G-Ragghianti

General information

• I have run spack debug report and reported the version of Spack/Python/Platform
• I have run spack maintainers <name-of-the-package> and @mentioned any maintainers
• I have uploaded the build log and environment files
• I have searched the issues of this repo and believe this is not a duplicate