Steps to reproduce the issue

$ spack install [email protected]
...

After doing quick research on the internet, the build error shown below is possibly due to the version of gcc. Hence package file needs to improved by adding conflict statements.

Error message

...
/cache/xuser/spack-stage/spack-stage-qt-base-6.3.2-5gzbyvx2z3blriycfrapdrfimetdkjui/spack-src/src/corelib/text/qlocale_tools.cpp:57:10: fatal error: charconv: No such file or directory
 #include 
          ^~~~~~~~~~
compilation terminated.
...

Information on your system

$ spack debug report
* **Spack:** 0.20.0.dev0 (d29cb87ecca1c9270eefa6e77ec15b0546fa7458)
* **Python:** 3.6.8
* **Platform:** linux-centos7-haswell
* **Concretizer:** clingo

Additional information

to be provided later.

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